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Sabrent's lineup of internal and external SSDs is popular among enthusiasts. The primary reason is the company's tendency to be among the first to market with products based on the latest controllers, while also delivering an excellent value proposition. The company has a long-standing relationship with Phison and adopts its controllers for many of their products. The company's 2 GBps-class portable SSD - the Rocket nano V2 - is based on Phison's U18 native controller. Read on for a detailed look at the Rocket nano V2 External SSD, including an analysis of its performance consistency, power consumption, and thermal profile.
The CXL consortium has had a regular presence at FMS (which rechristened itself from 'Flash Memory Summit' to the 'Future of Memory and Storage' this year). Back at FMS 2022, the company had announced v3.0 of the CXL specifications. This was followed by CXL 3.1's introduction at Supercomputing 2023. Having started off as a host to device interconnect standard, it had slowly subsumed other competing standards such as OpenCAPI and Gen-Z. As a result, the specifications started to encompass a wide variety of use-cases by building a protocol on top of the the ubiquitous PCIe expansion bus. The CXL consortium comprises of heavyweights such as AMD and Intel, as well as a large number of startup companies attempting to play in different segments on the device side. At FMS 2024, CXL had a prime position in the booth demos of many vendors.
The migration of server platforms from DDR4 to DDR5, along with the rise of workloads demanding large RAM capacity (but not particularly sensitive to either memory bandwidth or latency), has opened up memory expansion modules as one of the first set of widely available CXL devices. Over the last couple of years, we have had product announcements from Samsung and Micron in this area.
At FMS 2024, SK hynix was showing off their DDR5-based CMM-DDR5 CXL memory module with a 128 GB capacity. The company was also detailing their associated Heterogeneous Memory Software Development Kit (HMSDK) - a set of libraries and tools at both the kernel and user levels aimed at increasing the ease of use of CXL memory. This is achieved in part by considering the memory pyramid / hierarchy and relocating the data between the server's main memory (DRAM) and the CXL device based on usage frequency.
The CMM-DDR5 CXL memory module comes in the SDFF form-factor (E3.S 2T) with a PCIe 3.0 x8 host interface. The internal memory is based on 1α technology DRAM, and the device promises DDR5-class bandwidth and latency within a single NUMA hop. As these memory modules are meant to be used in datacenters and enterprises, the firmware includes features for RAS (reliability, availability, and serviceability) along with secure boot and other management features.
SK hynix was also demonstrating Niagara 2.0 - a hardware solution (currently based on FPGAs) to enable memory pooling and sharing - i.e, connecting multiple CXL memories to allow different hosts (CPUs and GPUs) to optimally share their capacity. The previous version only allowed capacity sharing, but the latest version enables sharing of data also. SK hynix had presented these solutions at the CXL DevCon 2024 earlier this year, but some progress seems to have been made in finalizing the specifications of the CMM-DDR5 at FMS 2024.
Micron had unveiled the CZ120 CXL Memory Expansion Module last year based on the Microchip SMC 2000 series CXL memory controller. At FMS 2024, Micron and Microchip had a demonstration of the module on a Granite Rapids server.
Additional insights into the SMC 2000 controller were also provided.
The CXL memory controller also incorporates DRAM die failure handling, and Microchip also provides diagnostics and debug tools to analyze failed modules. The memory controller also supports ECC, which forms part of the enterprise class RAS feature set of the SMC 2000 series. Its flexibility ensures that SMC 2000-based CXL memory modules using DDR4 can complement the main DDR5 DRAM in servers that support only the latter.
A few days prior to the start of FMS 2024, Marvell had announced a new CXL product line under the Structera tag. At FMS 2024, we had a chance to discuss this new line with Marvell and gather some additional insights.
Unlike other CXL device solutions focusing on memory pooling and expansion, the Structera product line also incorporates a compute accelerator part in addition to a memory-expansion controller. All of these are built on TSMC's 5nm technology.
The compute accelerator part, the Structera A 2504 (A for Accelerator) is a PCIe 5.0 x16 CXL 2.0 device with 16 integrated Arm Neoverse V2 (Demeter) cores at 3.2 GHz. It incorporates four DDR5-6400 channels with support for up to two DIMMs per channel along with in-line compression and decompression. The integration of powerful server-class ARM CPU cores means that the CXL memory expansion part scales the memory bandwidth available per core, while also scaling the compute capabilities.
Applications such as Deep-Learning Recommendation Models (DLRM) can benefit from the compute capability available in the CXL device. The scaling in the bandwidth availability is also accompanied by reduced energy consumption for the workload. The approach also contributed towards disaggregation within the server for a better thermal design as a whole.
The Structera X 2404 (X for eXpander) will be available either as a PCIe 5.0 (single x16 or two x8) device with four DDR4-3200 channels (up to 3 DIMMs per channel). Features such as in-line (de)compression, encryption / decryption, and secure boot with hardware support are present in the Structera X 2404 as well. Compared to the 100 W TDP of the Structera X 2404, Marvell expects this part to consume around 30 W. The primary purpose of this part is to enable hyperscalers to recycle DDR4 DIMMs (up to 6 TB per expander) while increasing server memory capacity.
Marvell also has a Structera X 2504 part that supports four DDR5-6400 channels (with two DIMMs per channel for up to 4 TB per expander). Other aspects remain the same as that of the DDR4-recycling part.
The company stressed upon some unique aspects of the Structera product line - the inline compression optimizes available DRAM capacity, and the 3 DIMMs per channel support for the DDR4 expander maximizes the amount of DRAM per expander (compared to competing solutions). The 5nm process lowers the power consumption, and the parts support accesses from multiple hosts. The integration of Arm Neoverse V2 cores appears to be a first for a CXL accelerator, and enables delegation of compute tasks to improve overall performance of the system.
While Marvell announced specifications for the Structera parts, it does appear that sampling is at least a few quarters away. One of the interesting aspects about Marvell's roadmaps / announcements in recent years has been their focus on creating products tuned to the demands of high-volume customers. The Structera product line is no different - hyperscalers are hungry to recycle their DDR4 memory modules and apparently can't wait to get their hands on the expander parts.
CXL is just starting its slow ramp-up, and the hockey stick segment of the growth curve is definitely definitely not in the near term. However, as more host systems with CXL support start to get deployed, products like the Structera accelerator line start to make sense from a server efficiency viewpoint.
When Western Digital introduced its Ultrastar DC SN861 SSDs earlier this year, the company did not disclose which controller it used for these drives, which made many observers presume that WD was using an in-house controller. But a recent teardown of the drive shows that is not the case; instead, the company is using a controller from Fadu, a South Korean company founded in 2015 that specializes on enterprise-grade turnkey SSD solutions.
The Western Digital Ultrastar DC SN861 SSD is aimed at performance-hungry hyperscale datacenters and enterprise customers which are adopting PCIe Gen5 storage devices these days. And, as uncovered in photos from a recent Storage Review article, the drive is based on Fadu's FC5161 NVMe 2.0-compliant controller. The FC5161 utilizes 16 NAND channels supporting an ONFi 5.0 2400 MT/s interface, and features a combination of enterprise-grade capabilities (OCP Cloud Spec 2.0, SR-IOV, up to 512 name spaces for ZNS support, flexible data placement, NVMe-MI 1.2, advanced security, telemetry, power loss protection) not available on other off-the-shelf controllers – or on any previous Western Digital controllers.
The Ultrastar DC SN861 SSD offers sequential read speeds up to 13.7 GB/s as well as sequential write speeds up to 7.5 GB/s. As for random performance, it boasts with an up to 3.3 million random 4K read IOPS and up to 0.8 million random 4K write IOPS. The drives are available in capacities between 1.6 TB and 7.68 TB with one or three drive writes per day (DWPD) over five years rating as well as in U.2 and E1.S form-factors.
While the two form factors of the SN861 share a similar technical design, Western Digital has tailored each version for distinct workloads: the E1.S supports FDP and performance enhancements specifically for cloud environments. By contrast, the U.2 model is geared towards high-performance enterprise tasks and emerging applications like AI.
Without any doubts, Western Digital's Ultrastar DC SN861 is a feature-rich high-performance enterprise-grade SSD. It has another distinctive feature: a 5W idle power consumption, which is rather low by the standards of enterprise-grade drives (e.g., it is 1W lower compared to the SN840). While the difference with predecessors may be just 1W, hyperscalers deploy thousands of drives and for their TCO every watt counts.
Western Digital's Ultrastar DC SN861 SSDs are now available for purchase to select customers (such as Meta) and to interested parties. Prices are unknown, but they will depend on such factors as volumes.
Sources: Fadu, Storage Review
As the deployment of PCIe 5.0 picks up steam in both datacenter and consumer markets, PCI-SIG is not sitting idle, and is already working on getting the ecosystem ready for the updats to the PCIe specifications. At FMS 2024, some vendors were even talking about PCIe 7.0 with its 128 GT/s capabilities despite PCIe 6.0 not even starting to ship yet. We caught up with PCI-SIG to get some updates on its activities and have a discussion on the current state of the PCIe ecosystem.
PCI-SIG has already made the PCIe 7.0 specifications (v 0.5) available to its members, and expects full specifications to be officially released sometime in 2025. The goal is to deliver a 128 GT/s data rate with up to 512 GBps of bidirectional traffic using x16 links. Similar to PCIe 6.0, this specification will also utilize PAM4 signaling and maintain backwards compatibility. Power efficiency as well as silicon die area are also being kept in mind as part of the drafting process.
The move to PAM4 signaling brings higher bit-error rates compared to the previous NRZ scheme. This made it necessary to adopt a different error correction scheme in PCIe 6.0 - instead of operating on variable length packets, PCIe 6.0's Flow Control Unit (FLIT) encoding operates on fixed size packets to aid in forward error correction. PCIe 7.0 retains these aspects.
The integrators list for the PCIe 6.0 compliance program is also expected to come out in 2025, though initial testing is already in progress. This was evident by the FMS 2024 demo involving Cadence's 3nm test chip for its PCIe 6.0 IP offering along with Teledyne Lecroy's PCIe 6.0 analyzer. These timelines track well with the specification completion dates and compliance program availability for previous PCIe generations.
We also received an update on the optical workgroup - while being optical-technology agnostic, the WG also intends to develop technology-specific form-factors including pluggable optical transceivers, on-board optics, co-packaged optics, and optical I/O. The logical and electrical layers of the PCIe 6.0 specifications are being enhanced to accommodate the new optical PCIe standardization and this process will also be done with PCIe 7.0 to coincide with that standard's release next year.
The PCI-SIG also has ongoing cabling initiatives. On the consumer side, we have seen significant traction for Thunderbolt and external GPU enclosures. However, even datacenters and enterprise systems are moving towards cabling solutions as it becomes evident that disaggregation of components such as storage from the CPU and GPU are better for thermal design. Additionally maintaining signal integrity over longer distances becomes difficult for on-board signal traces. Cabling internal to the computing systems can help here.
OCuLink emerged as a good candidate and was adopted fairly widely as an internal link in server systems. It has even made an appearance in mini-PCs from some Chinese manufacturers in its external avatar for the consumer market, albeit with limited traction. As speeds increase, a widely-adopted standard for external PCIe peripherals (or even connecting components within a system) will become imperative.
The growth in the enterprise SSD (eSSD) market has outpaced that of the client SSD market over the last few years. The requirements of AI servers for both training and inference has been the major impetus in this front. In addition to the usual vendors like Samsung, Solidigm, Micron, Kioxia, and Western Digital serving the cloud service providers (CSPs) and the likes of Facebook, a number of companies have been at work inside China to service the burgeoning eSSD market within.
In our coverage of the Microchip Flashtec 5016, we had noted Longsys's use of Microchip's SSD controllers to prepare and market enterprise SSDs under the FORESEE brand. Long before that, two companies - DapuStor and Memblaze - started releasing eSSDs specifically focusing on the Chinese market.
There are two drivers for the current growth spurt in the eSSD market. On the performance side, usage of eTLC behind a Gen 5 controller is allowing vendors to advertise significant benefits over the Gen 4 drives in the previous generation. At the same time, a capacity play is happening where there is a race to cram as much NAND as possible into a single U.2 / EDSFF enclosure. QLC is being used for this purpose, and we saw a number of such 128 TB-class eSSDs on display at FMS 2024.
DapuStor and Memblaze have both been relying on SSD controllers from Marvell for their flagship drives. Their latest product iterations for the Gen 5 era use the Marvell Bravera SC5 controller. Similar to the Flashtec controllers, these are not meant to be turnkey solutions. Rather, the SSD vendor has considerable flexibility in implementing specific features for their desired target market.
At FMS 2024, both DapuStor and Memblaze were displaying their latest solutions for the Gen 5 market. Memblaze was celebrating the sale of 150K+ units of their flagship Gen 5 solution - the PBlaze7 7940 incorporating Micron's 232L 3D eTLC with Marvell's Bravera SC5 controller. This SSD (available in capacities up to 30.72 TB) boasts of 14 GBps reads / 10 GBps writes along with random read / write performance of 2.8 M / 720K - all with a typical power consumption south of 16 W. Additionally, the support for some of NVMe features such as software-enabled flash (SEF) and zoned name space (ZNS) had helped Memblaze and Marvell to receive a 'Best of Show' award under the 'Most Innovative Customer Implementation' category.
DapuStor had their current lineup on display (including the Haishen H5000 series with the same Bravera SC5 controller). Additionally, the company had an unannounced proof-of-concept 61.44 TB QLC SSD on display. Despite the label carrying the Haishen5 series tag (its current members all use eTLC NAND), this sample comes with QLC flash.
DapuStor has already invested resources into implementing the flexible data placement (FDP) NVMe feature into the firmware of this QLC SSD. The company also had an interesting presentation session dealing with usage of CXL memory expansion to store the FTL for high-capacity enterprise SSDs - though this is something for the future and not related to any current product in the market.
Having established themselves within the Chinese market, both DapuStor and Memblaze are looking to expand in other markets. Having products with leading performance numbers and features in the eSSD growth segment will stand them in good stead in this endeavor.
At FMS 2024, Phison devoted significant booth space to their enterprise / datacenter SSD and PCIe retimer solutions, in addition to their consumer products. As a controller / silicon vendor, Phison had historically been working with drive partners to bring their solutions to the market. On the enterprise side, their tie-up with Seagate for the X1 series (and the subsequent Nytro-branded enterprise SSDs) is quite well-known. Seagate supplied the requirements list and had a say in the final firmware before qualifying the drives themselves for their datacenter customers. Such qualification involves a significant resource investment that is possible only by large companies (ruling out most of the tier-two consumer SSD vendors).
Phison had demonstrated the Gen 5 X2 platform at last year's FMS as a continuation of the X1. However, with Seagate focusing on its HAMR ramp, and also fighting other battles, Phison decided to go ahead with the qualification process for the X2 process themselves. In the bigger scheme of things, Phison also realized that the white-labeling approach to enterprise SSDs was not going to work out in the long run. As a result, the Pascari brand was born (ostensibly to make Phison's enterprise SSDs more accessible to end consumers).
Under the Pascari brand, Phison has different lineups targeting different use-cases: from high-performance enterprise drives in the X series to boot drives in the B series. The AI series comes in variants supporting up to 100 DWPD (more on that in the aiDAPTIVE+ subsection below).
The D200V Gen 5 took pole position in the displayed drives, thanks to its leading 61.44 TB capacity point (a 122.88 TB drive is also being planned under the same line). The use of QLC in this capacity-focused line brings down the sustained sequential write speeds to 2.1 GBps, but these are meant for read-heavy workloads.
The X200, on the other hand, is a Gen 5 eTLC drive boasting up to 8.7 GBps sequential writes. It comes in read-centric (1 DWPD) and mixed workload variants (3 DWPD) in capacities up to 30.72 TB. The X100 eTLC drive is an evolution of the X1 / Seagate Nytro 5050 platform, albeit with newer NAND and larger capacities.
These drives come with all the usual enterprise features including power-loss protection, and FIPS certifiability. Though Phison didn't advertise this specifically, newer NVMe features like flexible data placement should become part of the firmware features in the future.
Though not strictly an enterprise demo, Phison did have a station showing 100 GBps+ sequential reads and writes using a normal desktop workstation. The trick was installing two HighPoint Rocket 1608A add-in cards (each with eight M.2 slots) and placing the 16 M.2 drives in a RAID 0 configuration.
HighPoint Technology and Phison have been working together to qualify E26-based drives for this use-case, and we will be seeing more on this in a later review.
One of the more interesting demonstrations in Phison's booth was the aiDAPTIV+ Pro suite. At last year's FMS, Phison had demonstrated a 40 DWPD SSD for use with Chia (thankfully, that fad has faded). The company has been working on the extreme endurance aspect and moved it up to 60 DWPD (which is standard for the SLC-based cache drives from Micron and Solidigm).
At FMS 2024, the company took this SSD and added a middleware layer on top to ensure that workloads remain more sequential in nature. This drives up the endurance rating to 100 DWPD. Now, this middleware layer is actually part of their AI training suite targeting small business and medium enterprises who do not have the budget for a full-fledged DGX workstation, or for on-premises fine-tuning.
Re-training models by using these AI SSDs as an extension of the GPU VRAM can deliver significant TCO benefits for these companies, as the costly AI training-specific GPUs can be replaced with a set of relatively low-cost off-the-shelf RTX GPUs. This middleware comes with licensing aspects that are essentially tied to the purchase of the AI-series SSDs (that come with Gen 4 x4 interfaces currently in either U.2 or M.2 form-factors). The use of SSDs as a caching layer can enable fine-tuning of models with a very large number of parameters using a minimal number of GPUs (not having to use them primarily for their HBM capacity).
Samsung had quietly launched its BM1743 enterprise QLC SSD last month with a hefty 61.44 TB SKU. At FMS 2024, the company had the even larger 122.88 TB version of that SSD on display, alongside a few recorded benchmarking sessions. Compared to the previous generation, the BM1743 comes with a 4.1x improvement in I/O performance, improvement in data retention, and a 45% improvement in power efficiency for sequential writes.
The 128 TB-class QLC SSD boasts of sequential read speeds of 7.5 GBps and write speeds of 3 GBps. Random reads come in at 1.6 M IOPS, while 16 KB random writes clock in at 45K IOPS. Based on the quoted random write access granularity, it appears that Samsung is using a 16 KB indirection unit (IU) to optimize flash management. This is similar to the strategy adopted by Solidigm with IUs larger than 4K in their high-capacity SSDs.
A recorded benchmark session on the company's PM9D3a 8-channel Gen 5 SSD was also on display.
The SSD family is being promoted as a mainstream option for datacenters, and boasts of sequential reads up to 12 GBps and writes up to 6.8 GBps. Random reads clock in at 2 M IOPS, and random writes at 400 K IOPS.
Available in multiple form-factors up to 32 TB (M.2 tops out at 2 TB), the drive's firmware includes optional support for flexible data placement (FDP) to help address the write amplification aspect.
The PM1753 is the current enterprise SSD flagship in Samsung's lineup. With support for 16 NAND channels and capacities up to 32 TB, this U.2 / E3.S SSD has advertised sequential read and write speeds of 14.8 GBps and 11 GBps respectively. Random reads and writes for 4 KB accesses are listed at 3.4 M and 600 K IOPS.
Samsung claims a 1.7x performance improvement and a 1.7x power efficiency improvement over the previous generation (PM1743), making this TLC SSD suitable for AI servers.
The 9th Gen. V-NAND wafer was also available for viewing, though photography was prohibited. Mass production of this flash memory began in April 2024.
A few years back, the Japanese government's New Energy and Industrial Technology Development Organization (NEDO ) allocated funding for the development of green datacenter technologies. With the aim to obtain up to 40% savings in overall power consumption, several Japanese companies have been developing an optical interface for their enterprise SSDs. And at this year's FMS, Kioxia had their optical interface on display.
For this demonstration, Kioxia took its existing CM7 enterprise SSD and created an optical interface for it. A PCIe card with on-board optics developed by Kyocera is installed in the server slot. An optical interface allows data transfer over long distances (it was 40m in the demo, but Kioxia promises lengths of up to 100m for the cable in the future). This allows the storage to be kept in a separate room with minimal cooling requirements compared to the rack with the CPUs and GPUs. Disaggregation of different server components will become an option as very high throughput interfaces such as PCIe 7.0 (with 128 GT/s rates) become available.
The demonstration of the optical SSD showed a slight loss in IOPS performance, but a significant advantage in the latency metric over the shipping enterprise SSD behind a copper network link. Obviously, there are advantages in wiring requirements and signal integrity maintenance with optical links.
Being a proof-of-concept demonstration, we do see the requirement for an industry-standard approach if this were to gain adoption among different datacenter vendors. The PCI-SIG optical workgroup will need to get its act together soon to create a standards-based approach to this problem.
At FMS 2024, the technological requirements from the storage and memory subsystem took center stage. Both SSD and controller vendors had various demonstrations touting their suitability for different stages of the AI data pipeline - ingestion, preparation, training, checkpointing, and inference. Vendors like Solidigm have different types of SSDs optimized for different stages of the pipeline. At the same time, controller vendors have taken advantage of one of the features introduced recently in the NVM Express standard - Flexible Data Placement (FDP).
FDP involves the host providing information / hints about the areas where the controller could place the incoming write data in order to reduce the write amplification. These hints are generated based on specific block sizes advertised by the device. The feature is completely backwards-compatible, with non-FDP hosts working just as before with FDP-enabled SSDs, and vice-versa.
Silicon Motion's MonTitan Gen 5 Enterprise SSD Platform was announced back in 2022. Since then, Silicon Motion has been touting the flexibility of the platform, allowing its customers to incorporate their own features as part of the customization process. This approach is common in the enterprise space, as we have seen with Marvell's Bravera SC5 SSD controller in the DapuStor SSDs and Microchip's Flashtec controllers in the Longsys FORESEE enterprise SSDs.
At FMS 2024, the company was demonstrating the advantages of flexible data placement by allowing a single QLC SSD based on their MonTitan platform to take part in different stages of the AI data pipeline while maintaining the required quality of service (minimum bandwidth) for each process. The company even has a trademarked name (PerformaShape) for the firmware feature in the controller that allows the isolation of different concurrent SSD accesses (from different stages in the AI data pipeline) to guarantee this QoS. Silicon Motion claims that this scheme will enable its customers to get the maximum write performance possible from QLC SSDs without negatively impacting the performance of other types of accesses.
Silicon Motion and Phison have market leadership in the client SSD controller market with similar approaches. However, their enterprise SSD controller marketing couldn't be more different. While Phison has gone in for a turnkey solution with their Gen 5 SSD platform (to the extent of not adopting the white label route for this generation, and instead opting to get the SSDs qualified with different cloud service providers themselves), Silicon Motion is opting for a different approach. The flexibility and customization possibilities can make platforms like the MonTitan appeal to flash array vendors.
At FMS 2024, Kioxia had a proof-of-concept demonstration of their proposed a new RAID offload methodology for enterprise SSDs. The impetus for this is quite clear: as SSDs get faster in each generation, RAID arrays have a major problem of maintaining (and scaling up) performance. Even in cases where the RAID operations are handled by a dedicated RAID card, a simple write request in, say, a RAID 5 array would involve two reads and two writes to different drives. In cases where there is no hardware acceleration, the data from the reads needs to travel all the way back to the CPU and main memory for further processing before the writes can be done.
Kioxia has proposed the use of the PCIe direct memory access feature along with the SSD controller's controller memory buffer (CMB) to avoid the movement of data up to the CPU and back. The required parity computation is done by an accelerator block resident within the SSD controller.
In Kioxia's PoC implementation, the DMA engine can access the entire host address space (including the peer SSD's BAR-mapped CMB), allowing it to receive and transfer data as required from neighboring SSDs on the bus. Kioxia noted that their offload PoC saw close to 50% reduction in CPU utilization and upwards of 90% reduction in system DRAM utilization compared to software RAID done on the CPU. The proposed offload scheme can also handle scrubbing operations without taking up the host CPU cycles for the parity computation task.
Kioxia has already taken steps to contribute these features to the NVM Express working group. If accepted, the proposed offload scheme will be part of a standard that could become widely available across multiple SSD vendors.
Western Digital's BiCS8 218-layer 3D NAND is being put to good use in a wide range of client and enterprise platforms, including WD's upcoming Gen 5 client SSDs and 128 TB-class datacenter SSD. On the external storage front, the company demonstrated four different products: for card-based media, 4 TB microSDUC and 8 TB SDUC cards with UHS-I speeds, and on the portable SSD front we had two 16 TB drives. One will be a SanDisk Desk Drive with external power, and the other in the SanDisk Extreme Pro housing with a lanyard opening in the case.
All of these are using BiCS8 QLC NAND, though I did hear booth talk (as I was taking leave) that they were not supposed to divulge the use of QLC in these products. The 4 TB microSDUC and 8 TB SDUC cards are rated for UHS-I speeds. They are being marketed under the SanDisk Ultra branding.
The SanDisk Desk Drive is an external SSD with a 18W power adapter, and it has been in the market for a few months now. Initially launched in capacities up to 8 TB, Western Digital had promised a 16 TB version before the end of the year. It appears that the product is coming to retail quite soon. One aspect to note is that this drive has been using TLC for the SKUs that are currently in the market, so it appears unlikely that the 16 TB version would be QLC. The units (at least up to the 8 TB capacity point) come with two SN850XE drives. Given the recent introduction of the 8 TB SN850X, an 'E' version with tweaked firmware is likely to be present in the 16 TB Desk Drive.
The 16 TB portable SSD in the SanDisk Extreme housing was a technology demonstration. It is definitely the highest capacity bus-powered portable SSD demonstrated by any vendor at any trade show thus far. Given the 16 TB Desk Drive's imminent market introduction, it is just a matter of time before the technology demonstration of the bus-powered version becomes a retail reality.
Kioxia's booth at FMS 2024 was a busy one with multiple technology demonstrations keeping visitors occupied. A walk-through of the BiCS 8 manufacturing process was the first to grab my attention. Kioxia and Western Digital announced the sampling of BiCS 8 in March 2023. We had touched briefly upon its CMOS Bonded Array (CBA) scheme in our coverage of Kioxial's 2Tb QLC NAND device and coverage of Western Digital's 128 TB QLC enterprise SSD proof-of-concept demonstration. At Kioxia's booth, we got more insights.
Traditionally, fabrication of flash chips involved placement of the associate logic circuitry (CMOS process) around the periphery of the flash array. The process then moved on to putting the CMOS under the cell array, but the wafer development process was serialized with the CMOS logic getting fabricated first followed by the cell array on top. However, this has some challenges because the cell array requires a high-temperature processing step to ensure higher reliability that can be detrimental to the health of the CMOS logic. Thanks to recent advancements in wafer bonding techniques, the new CBA process allows the CMOS wafer and cell array wafer to be processed independently in parallel and then pieced together, as shown in the models above.
The BiCS 8 3D NAND incorporates 218 layers, compared to 112 layers in BiCS 5 and 162 layers in BiCS 6. The company decided to skip over BiCS 7 (or, rather, it was probably a short-lived generation meant as an internal test vehicle). The generation retains the four-plane charge trap structure of BiCS 6. In its TLC avatar, it is available as a 1 Tbit device. The QLC version is available in two capacities - 1 Tbit and 2 Tbit.
Kioxia also noted that while the number of layers (218) doesn't compare favorably with the latest layer counts from the competition, its lateral scaling / cell shrinkage has enabled it to be competitive in terms of bit density as well as operating speeds (3200 MT/s). For reference, the latest shipping NAND from Micron - the G9 - has 276 layers with a bit density in TLC mode of 21 Gbit/mm2, and operates at up to 3600 MT/s. However, its 232L NAND operates only up to 2400 MT/s and has a bit density of 14.6 Gbit/mm2.
It must be noted that the CBA hybrid bonding process has advantages over the current processes used by other vendors - including Micron's CMOS under array (CuA) and SK hynix's 4D PUC (periphery-under-chip) developed in the late 2010s. It is expected that other NAND vendors will also move eventually to some variant of the hybrid bonding scheme used by Kioxia.
At FMS 2024, Phison gave us the usual updates on their client flash solutions. The E31T Gen 5 mainstream controller has already been seen at a few tradeshows starting with Computex 2023, while the USB4 native flash controller for high-end PSSDs was unveiled at CES 2024. The new solution being demonstrated was the E29T Gen 4 mainstream DRAM-less controller. Phison believes that there is still performance to be eked out on the Gen 4 platform with a low-cost DRAM-less solution.
| Phison NVMe SSD Controller Comparison | |||||||||
| E31T | E29T | E27T | E26 | E18 | |||||
| Market Segment | Mainstream Consumer | High-End Consumer | |||||||
| Manufacturing Process |
7nm | 12nm | 12nm | 12nm | 12nm | ||||
| CPU Cores | 2x Cortex R5 | 1x Cortex R5 | 1x Cortex R5 | 2x Cortex R5 | 3x Cortex R5 | ||||
| Error Correction | 7th Gen LDPC | 7th Gen LDPC | 5th Gen LDPC | 5th Gen LDPC | 4th Gen LDPC | ||||
| DRAM | No | No | No | DDR4, LPDDR4 | DDR4 | ||||
| Host Interface | PCIe 5.0 x4 | PCIe 4.0 x4 | PCIe 4.0 x4 | PCIe 5.0 x4 | PCIe 4.0 x4 | ||||
| NVMe Version | NVMe 2.0 | NVMe 2.0 | NVMe 2.0 | NVMe 2.0 | NVMe 1.4 | ||||
| NAND Channels, Interface Speed | 4 ch, 3600 MT/s |
4 ch, 3600 MT/s |
4 ch, 3600 MT/s |
8 ch, 2400 MT/s |
8 ch, 1600 MT/s |
||||
| Max Capacity | 8 TB | 8 TB | 8 TB | 8 TB | 8 TB | ||||
| Sequential Read | 10.8 GB/s | 7.4 GB/s | 7.4 GB/s | 14 GB/s | 7.4 GB/s | ||||
| Sequential Write | 10.8 GB/s | 6.5 GB/s | 6.7 GB/s | 11.8 GB/s | 7.0 GB/s | ||||
| 4KB Random Read IOPS | 1500k | 1200k | 1200k | 1500k | 1000k | ||||
| 4KB Random Write IOPS | 1500k | 1200k | 1200k | 2000k | 1000k | ||||
Compared to the E27T, the key update is the use of a newer LDPC engine that enables better SSD lifespan as well as compatibility with the latest QLC flash, along with additional power optimizations.
The company also had a U21 USB4 PSSD reference design (complete with a MagSafe-compatible casing) on display, along with the usual CrystalDiskMark benchmark results. We were given to understand that PSSDs based on the U21 controller are very close to shipping into retail.
Phison has been known for taking the lead in introducing SSD controllers based on the latest and greatest interface options - be it PCIe 4.0, PCIe 5.0, or USB4. The competition is usually in the form of tier-one vendors opting for their in-house solution, or Silicon Motion stepping in a few quarters down the line after the market takes off with a more power-efficient solution. With the E29T, Phison is aiming to ensure that they still have a viable play in the mainstream Gen 4 market with their latest LDPC engine and supporting the highest available NAND flash speeds.
Microchip recently announced the availability of their second PCIe Gen 5 enterprise SSD controller - the Flashtec 5016. Like the 4016, this is also a 16-channel controller, but there are some key updates:
Microchip's enterprise SSD controllers provide a high level of flexibility to SSD vendors by providing them with significant horsepower and accelerators. The 5016 includes Cortex-A53 cores for SSD vendors to run custom applications relevant to SSD management. However, compared to the Gen4 controllers, there are two additional cores in the CPU cluster. The DRAM subsystem includes ECC support (both out-of-band and inline, as desired by the SSD vendor).
At FMS 2024, the company demonstrated an application of the neural network engines embedded in the Gen5 controllers. Controllers usually employ a 'read-retry' operation with altered read-out voltages for flash reads that do not complete successfully. Microchip implemented a machine learning approach to determine the read-out voltage based on the health history of the NAND block using the NN engines in the controller. This approach delivers tangible benefits for read latency and power consumption (thanks to a smaller number of errors on the first read).
The 4016 and 5016 come with a single-chip root of trust implementation for hardware security. A secure boot process with dual-signature authentication ensures that the controller firmware is not maliciously altered in the field. The company also brought out the advantages of their controller's implementation of SR-IOV, flexible data placement, and zoned namespaces along with their 'credit engine' scheme for multi-tenant cloud workloads. These aspects were also brought out in other demonstrations.
Microchip's press release included quotes from the usual NAND vendors - Solidigm, Kioxia, and Micron. On the customer front, Longsys has been using Flashtec controllers in their enterprise offerings along with YMTC NAND. It is likely that this collaboration will continue further using the new 5016 controller.
Western Digital's FMS 2024 demonstrations included a preview of their upcoming PCIe 5.0 x4 M.2 2280 NVMe SSDs for mobile workstations and consumer desktops. The Gen 5 client SSD market has been dominated by solutions based on Phison's E26 controller. The first generation products launched with slower NAND flash, while the more recent ones have exceeded the 14 GBps barrier by utilizing Micron's 2400 MT/s 232L 3D TLC. Western Digital has been conservative over the last year or so by focusing more on the mainstream / mid-range market in terms of new product introductions (such as the WD Blue SN5000, WD_BLACK SN770M, and the WD Blue SN580). Their SSD lineup is due for an update with Gen 5 drives being sorely missed. The SSDs being demonstrated at FMS 2024 will end up doing just that.
Western Digital's technology demonstrations in this segment involved two different M.2 2280 SSDs - one for the performance segment, and another for the mainstream market. They both utilize in-house controllers - while the performance segment drive uses a 8-channel controller with DRAM for the flash translation layer, the mainstream one utilizes a 4-channel DRAM-less controller. Both drives being benchmarked live were equipped with BiCS8 218-layer 3D TLC.
Western Digital is touting the power efficiency of their platform as a key differentiator, promising south of 7W (performance drive) and 5W (mainstream DRAM-less drive) for the complete SSD under stressful traffic. This makes it suitable for use in mobile workstations, but a good fit for desktops as well.
Demonstrated performance numbers indicate almost 15 GBps sequential reads and 2M+ random read IOPS for the performance drive, and 10.7 GBps sequential reads for the mainstream version. Western Digital might have missed the Gen 5 bus as it started out slowly. However, the technology demonstrations with the in-house controller and NAND indicate that WD has caught up just as the Gen 5 market is about to take off.|
Silicon Motion's SM2320 native USB 3.2 Gen 2x2 controller for USB flash drives and portable SSDs has enjoyed great market success with a large number of design wins over the last few years. Silicon Motion proudly displayed a selection of products based on the SM2320 on the show floor at FMS 2024.
The SM2320 went into mass production in Q3 2021. Since then, the NAND flash market has seen considerable change. QLC is becoming more and more reliable and common, leading to the launch of high-capacity cost-effective 4 TB and 8 TB SSDs. Newer NAND generations with flash operating at higher speeds have also made an appearance.
The SM2320, fabricated in TSMC's 28nm node, supported four channels of NAND flash running at up to 800 MT/s. The new SM2322 uses the same process node and retains support for the same number of flash channels and chip enables (8 CEs per channel). However, the NAND can now operate at up to 1200 MT/s.
The SM2322 also improves the QLC support, thanks to the implementation of a better ECC scheme. While the SM2320 opted for a 2KB LDPC implementation, the SM2322 goes in for a 4KB LDPC solution. The use of a larger region enables extension of the NAND's useful life.
The SM2322 and SM2320 packages are similar in size, and Silicon Motion expects PSSD designs using the SM2320 to adopt the SM2322 with different NAND (higher capacity / speeds) using the same enclosure. Products based on the SM2322 are expected to appear in the market before the end of the year.
Silicon Motion has been teasing their SM2508 client SSD controller for more than a year now at various trade shows. The controller is finally set for mass production, just in time as the mainstream segment of the Gen 5 SSD market is poised to take off. Silicon Motion expects SSDs based on the SM2508 to be available for purchase by the end of the year.
At FMS 2024, the company was reusing the same information cards seen at Computex in June. The specifications of the SM2508 from our Computex coverage are reproduced here.
| Silicon Motion NVMe Client SSD Controller Comparison | ||||||||
| SM2508 | SM2264 | SM2268XT2 | SM2269XT | |||||
| Market Segment | High-End | Mainstream | ||||||
| Manufacturing Process | 6nm | 12nm | 12nm | 12nm | ||||
| CPU Cores | 4x Cortex R8 | 4x Cortex R8 | 2x Cortex R8 | 2x Cortex R8 | ||||
| Error Correction | 4K+ LDPC | 4K LDPC | 4K+ LDPC | 4K LDPC | ||||
| DRAM | DDR4, LPDDR4X | DDR4, LPDDR4X | No | No | ||||
| Host Interface | PCIe 5.0 x4 | PCIe 4.0 x4 | PCIe 4.0 x4 | PCIe 4.0 x4 | ||||
| NVMe Version | NVMe 2.0 | NVMe 1.4 | NVMe 2.0 | NVMe 1.4 | ||||
| NAND Channels, Interface Speed | 8 ch, 3600 MT/s |
8 ch, 1600 MT/s |
4 ch, 3600 MT/s |
4 ch, 1600 MT/s |
||||
| Sequential Read | 14.5 GB/s | 7.5 GB/s | 7.4 GB/s | 5.1 GB/s | ||||
| Sequential Write | 14 GB/s | 7 GB/s | 6.7 GB/s | 4.8 GB/s | ||||
| 4KB Random Read IOPS | 2500k | 1300k | 1200k | 900k | ||||
| 4KB Random Write IOPS | 2500k | 1200k | 1200k | 900k | ||||
Current Gen 5 SSDs in the consumer client market are currently all based on Phison's E26 controller. The appearance of newer platform solutions for SSD vendors is bound to be good from both an end-user pricing and adoption perspective.
Solidigm's D5-P5336 61.44 TB enterprise QLC SSD released in mid-2023 has seen unprecedented demand over the last few quarters, driven by the insatiable demand for high-capacity storage in AI datacenters. Multiple vendors have recognized and started preparing products to service this demand, but Solidigm appears to have taken the lead in actual market availability.
At FMS 2024, Solidigm previewed a U.2 version of their upcoming 122 TB enterprise QLC SSD. The proof-of-concept Gen 4 drives were running live in a 2U server, and Solidigm is preparing them for an early 2025 release.
Given the capacity play, Solidigm will be relying on QLC technology. However, the company was coy about confirming the NAND generation used in the product.
Source: The Advantages of Floating Gate Technology (YouTube)
The 61.44 TB D5-P5336 currently utilizes Solidigm's 192L 3D QLC based on the floating gate architecture. This has a distinct advantage for QLC endurance compared to the charge trap architecture also available to Solidigm from SK hynix. That said, SK hynix's 238L NAND also has a QLC avatar, which gives Solidigm the flexibility to use either NAND for the production version of the 122 TB drive. Solidigm expects to confirm this by the end of year in preparation for volume shipment in the first half of 2025.
Solidigm's datacenter SSD lineup includes models targeting different performance, endurance, and cost tradeoffs. Last year, the company had introduced the D5-P5336 QLC drive as a low-cost high-capacity drive for read-heavy workloads, while also preparing the SLC-based D7-P5810 for extremely write-intensive workloads requiring high endurance. The D7-P5520 / D7-P5620 Gen 4 drives with Solidigm's own 144L 3D TLC have been the high-performance offerings for generic workloads over the last couple of years.
Solidigm is announcing the availability of the successor to the D7-P5x20 today - the new D7-PS1010 and D7-PS1030. Both of these NVMe drives use SK hynix's 176L 3D TLC NAND and come with a PCIe 5.0 interface. The third digit in the model number matches the DWPD rating, with the D7-PS1010 targeting mixed workloads with a 1 DWPD rating, and the D7-PS1030 targeting write-intensive use-cases with a 3 DWPD rating.
Compared to the previous generation D7-P5x20, the D7-PS10x0 series brings about the following upgrades:
The specifications of the two new SSD families are summarized in the table below.
| Solidigm D7-PS1000 Series Enterprise SSDs | |||
| D7-PS1030 | D7-P1010 | ||
| Form Factor | U.2 2.5" 15mm E3.S 7.5mm |
||
| Interface | PCIe 5.0 NVMe 2.0 | ||
| Capacities | 1.6TB 3.2TB 6.4TB 12.8TB |
1.92TB 3.68TB 7.68TB 15.36TB |
|
| NAND | SK hynix 176L 3D TLC (Charge Trap Architecture) | ||
| Sequential Read (128 KB @ QD 128) | 14500 MB/s | ||
| Sequential Write (128 KB @ QD 128) | 4100 MB/s (1.6 TB / 1.92 TB) 8200 MB/s (3.2 TB / 3.84 TB) 9300 MB/s (6.4 TB / 7.68 TB / 12.8 TB / 15.36 TB) |
||
| Random Read (4 KB @ QD 512) | 2.35 M (1.6 TB / 1.92 TB) 3.1 M (3.2 TB / 3.84 TB) 2.8 M (6.4 TB / 7.68 TB) 2.75 M (12.8 TB / 15.36 TB) |
||
| Random Write (4 kB) | 0.35 M (1.6 TB) 0.716 M (3.2 TB) 0.8 M (6.4 TB / 12.8 TB) |
0.15 M (1.92 TB) 0.315 M (3.84 TB) 0.4 M (7.68 TB) 0.38 M (15.36 TB) |
|
| Power | Sustained Write | 13 W (1.6 TB / 1.92 TB) 18 W (3.2 TB / 3.84 TB) 23 W (6.4 TB / 7.68 TB / 12.8 TB / 15.36 TB) |
|
| Sustained Read | 17 W (1.6 TB / 1.92 TB) 19 W (3.2 TB / 3.84 TB) 22 W (6.4 TB / 7.68 TB) 23 W (12.8 TB / 15.36 TB) |
||
| Peak | 18 W (1.6 TB / 1.92 TB) 22 W (3.2 TB / 3.84 TB) 29 W (6.4 TB / 7.68 TB) 30 W (12.8 TB / 15.36 TB) |
||
| Idle | 5 W | ||
| Write Endurance | 3 DWPD | 1 DWPD | |
| Warranty | 5 years | ||
Based on Solidigm's own internal testing, the D7-PS1010 compares very favorably against the Gen 5 datacenter SSDs already in the market from Samsung and Kioxia. However, the recently introduced Micron 9550 series may present a better challenge to Solidigm's claims.
Gen 5 SSDs are well-suited for the storage-intensive tasks in AI workloads. Every new product needs to tie itself to the AI buzzword currently, but we should excuse SSD manufacturers for doing the same - after all training and inference needs to move large amounts of data back and forth between the processing engine and underlying memory. Solidigm expects the D7-PS10x0 to be a good fit as direct-attached storage internal to GPU servers or as all-flash tier supporting a HDD-only object tier in the cloud. For on-premises GPU servers, the flash / HDD tiered storage can be replaced by an all-QLC object tier.
Solidigm claims better energy efficiency compared to the competitors' Gen 5 drives from last year for various AI workload traces. While the data ingest and archival processes require system designers to maximize the storage capacity per watt (the QLC-based Solidigm D5-P5336 is attractive here), the core processing steps require the optimization of performance per watt. The D7-PS10x0 have a natural fit in this segment.
Solidigm / Intel has been serving the datacenter SSD market since its inception. The company is well aware of the quality and reliability requirements in this space. The D7-PS1010 and D7-PS1030 include the usual enhanced PLI (power loss imminent) validation checks for data saved in the process of power loss / restoration. The critical SRAMs in the SSD controller also have ECC protection. UBER testing goes well beyond the suggested JEDEC specifications. The company also claims that its silent data corruption testing and modeling are better than its competitors.
The new D7-PS1010 and D7-PS1030 bring class-leading Gen 5 performance to the datacenter SSD market. They are available for purchase now in both U.2 and E3.S form factors, with capacities ranging from 1.6 TB - 12.8 TB (D7-PS1030) and 1.92 TB - 15.36 TB (D7-PS1010).
In an unexpected announcement during their quarterly earnings call this week, Western Digital revealed that it has begun sampling an upcoming 32TB hard drive. The nearline HDD is aimed at hyperscalers, and relies on a combination of Westen Digital's EAMR technology, as well as shingled magnetic recording (SMR) technology to hit their highest capacity figures to date.
Western Digital's 32TB HDD uses all of the company's most advanced technologies. Besides energy-assisted magnetic recording (EAMR/ePMR 2 to be more precise) technology, WD is also leveraging triple-stage actuators for better positioning of heads and two-dimensional (TDMR) read heads, OptiNAND for extra performance and reliability, distributed sector (DSEC) technology and a proprietary error correcting code (ECC) technology. And, most importantly, UltraSMR technology to provide additional capacity.
"We are shipping samples of our 32TB UltraSMR/ePMR nearline hard drives to select customers," said David Goeckeler, chief executive of Western Digital, at the earnings call. "These drives feature advanced triple-stage actuators and OptiNAND technology which are designed for seamless qualification, integration and deployment in hyperscale cloud and enterprise data centers while maintaining exceptional reliability."
Seagate is currently shipping its 30TB Exos HDDs based on heat-assisted magnetic recording (HAMR) platform called Modaic 3+ to select exascalers, and the company has implied that it can build a 32TB version of the drive using SMR. Therefore, from capacity point of view, Western Digital's announcement means that the company has caught up with its rival.
As with the comapny's other UltraSMR drives, the 32TB nearline drive is aimed at WD's enterprise customers, whose infrastructure can handle the additional management requirements that SMR imposes. As SMR in enterprise drives is not transparent, it's up to the host to manage many of the complexities that come with a hard drive that isn't suited for random writes. Though at least in WD's case, the upshot is that UltraSMR also offers a more significant density increase than other SMR implementations, using a larger number of SMR bands to increase HDD capacity by up to 20%.
Working backwards, that 20% capacity increase also means that WD's new drive is starting from 2.56TB CMR platters. And while 2.56TB makes for a very decent areal density, this would mean that WD is still behind rival Seagate in terms of areal density overall, as Seagate has 3TB CMR platters in its latest HAMR-based Exos drives.
Hand-held gaming consoles based on notebook platforms (such as the Valve SteamDeck, ASUS ROG Ally, and the MSI Claw) are one of the fastest growing segments in the PC gaming market. The form-factor of such systems has created a demand for M.2 2230 NVMe SSDs. Almost all vendors have a play in this market, and even Micron has OEM SSDs (such as the Micron 2400, 2550, and 2500 series) in this form-factor. Crucial has strangely not had an offering with its own brand name to target this segment, but that changes today with the launch of the Crucial P310 NVMe SSD.
The Crucial P310 is a family of M.2 2230 PCIe Gen4 NVMe SSDs boasting class-leading read/write speeds of 7.1 GBps and 6 GBps. The family currently has two capacity points - 1 TB and 2 TB. Micron claims that the use of its 232L 3D NAND and Phison's latest E27T DRAM-less controller (fabricated in TSMC's 12nm process) help in reducing power consumption under active use compared to the competition - directly translating to better battery life for the primary use-case involving gaming handheld consoles.
Based on the specifications, it appears that the drives are using 232L 3D QLC. Compared to the recently-released Micron 2550 SSD series in the same form-factor, a swap in the controller has enabled some improvements in both power efficiency and performance. The other specifications are summarized in the table below.
| Crucial P310 SSD Specifications | ||
| Capacity | 2 TB | 1 TB |
| Controller | Phison E27T (DRAM-less) | |
| NAND Flash | Micron 232L 3D QLC NAND | |
| Form-Factor, Interface | Single-Sided M.2-2230 PCIe 4.0 x4, NVMe |
|
| Sequential Read | 7100 MB/s | |
| Sequential Write | 6000 MB/s | |
| Random Read IOPS | 1 M | |
| Random Write IOPS | 1.2 M | |
| SLC Caching | Yes | |
| TCG Pyrite Encryption | Yes | |
| Warranty | 5 Years | |
| Write Endurance | 440 TBW 0.12 DWPD |
220 TBW 0.12 DWPD |
| MSRP | $215 | $115 |
The power efficiency, cost, and capacity points are plus points for the Crucial P310 family. However, the endurance ratings are quite low. Gaming workloads are inherently read-heavy, and this may not be a concern for the average consumer. However, a 0.12 DWPD rating may turn out to be a negative aspect when compared against the competition's 0.33 DWPD offerings in the same segment.
Western Digital has quietly introduced an 8 TB version of its high-end SN850X SSD, doubling the top capacity of the well-regarded drive family. The new drive offers performance on par with other members of the range, but with twice as much capacity as the previous top-end model – and with a sizable price premium to go with its newfound capacity.
Western Digital introduced its WD_Black SN850X SSDs in the summer of 2022, releasing single-sided 1 TB and 2 TB models, along with a double-sided 4 TB model. But now almost two years down the line, the company has seen it fit to introduce the even higher capacity 8 TB model to serve as their flagship PCIe 4.0 SSD, and keep with the times of NAND prices and SSD capacity demands.
Like the other SN850X models, WD is using their in-house, 8-channel controller for the new 8 TB model, which sports a PCIe 4.0 x4 interface. And being that this is a high-end SSD, the controller is paired with DRAM (DDR4) for page index caching, though WD doesn't disclose how much DRAM is on any given model. On the NAND front, WD is apparently still using their BiCS 5 112L NAND here, which means we're looking at 4x 2 TB NAND chips, each with 16 1Tbit TLC dies on-board, twice as many dies as were used on the NAND chips for the 4 TB model.
The peak read speed of the new 8TB model is 7,200 MB/sec, which is actually a smidge below the performance the 4 TB and 2 TB models due to the overhead from the additional NAND dies. Meanwhile peak sequential write speeds remain at 6,600 MB/sec, while 4K random write performance maxes out at 1200K IOPS for both reads and writes. It goes without saying that this is a step below the performance of the market flagship PCIe 5.0 SSDs available today, but it's going to be a bit longer until anyone else besides Phison is shipping a PCIe 5.0 controller – never mind the fact that these drives aren't available in 8 TB capacities.
The 8 TB SN850X also keeps the same drive endurance progression as the rest of the SN850X family. In this case, double the NAND brings double the endurance of the 4 TB model, for an overall endurance of 4800 terabytes written (TBW). Or in terms of drive writes per day, this is the same 0.33 rating as the other SN850X drives.
| WD_Back SN850X SSD Specifications | ||||
| Capacity | 8 TB | 4 TB | 2 TB | 1 TB |
| Controller | WD In-House: 8 Channel, DRAM (DDR4) | |||
| NAND Flash | WD BiCS 5 TLC | |||
| Form-Factor, Interface | Double-Sided M.2-2280 PCIe 4.0 x4, NVMe |
Single-Sided M.2-2280 PCIe 4.0 x4, NVMe |
||
| Sequential Read | 7200 MB/s | 7300 MB/s | 7300 MB/s | 7300 MB/s |
| Sequential Write | 6600 MB/s | 6600 MB/s | 6600 MB/s | 6300 MB/s |
| Random Read IOPS | 1200K | 1200K | 1200K | 800K |
| Random Write IOPS | 1200K | 1100K | 1100K | 1100K |
| SLC Caching | Yes | |||
| TCG Opal Encryption | 2.01 | |||
| Warranty | 5 Years | |||
| Write Endurance | 4800 TBW 0.33 DWPD |
2400 TBW 0.33 DWPD |
1200 TBW 0.33 DWPD |
600 TBW 0.33 DWPD |
| MSRP (No Heatsink) | $850 | $260 | $140 | $85 |
Western Digital's WD_Black SN850X is available both with and without aluminum heatsink. The version without a heatsink aimed at laptops and BYOC setups costs $849.99, whereas a version with an aluminum heat spreader comes at $899.99. In both cases the 8 TB drive carries a significant price premium over the existing 4 TB model, which is readily available for $259.99.
This kind of price premium is unfortunately typical for 8 TB drives, and will likely remain so until both supply and demand for the high-capacity drives picks up to bring prices down. Still, with rival drives such as Corsair's MP600 Pro XT 8 TB and Sabrent's Rocket 4 Plus 8 TB going for $965.99 and $1,199.90 respectively, the introduction of the 8 TB SN850X is definitely pushing high-capacity M.2 SSD prices down, albeit slowly. So for systems with multiple M.2 slots, at least, the sweet spot on drive pricing is still to get two 4 TB SSDs.
Lexar has a long history of serving the flash-based consumer storage market in the form of SSDs, memory cards, and USB flash drives. After having started out as a Micron brand, the company was acquired by Longsys which has diversified its product lineup with regular introduction of new products. Recently, the company announced a number of portable SSDs targeting different market segments. The Lexar ARMOR 700 Portable SSD makes its entry as the new flagship in the 20 Gbps PSSD segment.
Despite its flagship positioning and rugged nature, the ARMOR 700 is reasonably priced thanks to the use of a native USB flash controller - the Silicon Motion SM2320. Similar to the SL500, the product uses YMTC 3D TLC NAND (compared to the usual Micron or BiCS NAND that we have seen in SM2320-based PSSDs from other vendors). Read on for a detailed look at the ARMOR 700, including an analysis of its internals and evaluation of its performance consistency, power consumption, and thermal profile.
UPDATE 5/17, 6 PM: Western Digital has confirmed that the new 2.5-inch T GB HDDs uses 6 SMR platters
The vast majority of laptops nowadays use solid-state drives, which is why the development of new, higher-capacity 2.5-inch hard drives has all but come to a halt. Or rather, it almost has. It seems that the 2.5-inch form factor has a bit more life left in it after all, as today Western Digital has released a slate of new external storage products based on a new, high-capacity 6 TB 2.5-inch hard drive.
WD's new 6 TB spinner is being used to offer upgraded versions of the company's My Passport, Black P10, and and G-DRIVE ArmorATD portable storage products. Notably, however, WD isn't selling the bare 2.5-inch drive on a standalone basis – at least not yet – so for the time being it's entirely reserved for use in external storage.
Consequently, WD isn't publishing much about the 6 TB hard drive itself. The maximum read speed for these products is listed at 130 MB/sec – the same as WD's existing externals – and write performance goes unmentioned.
Notably, all of these 6 TB devices are thicker than their existing 5 TB counterparts, which strongly suggests that WD has increased their storage capacity not by improving their areal density, but by adding another platter to their existing drive platform (which WD has since confirmed). This, in turn, would help to explain why these new drives are being used in external storage products, as WD's 5 TB 2.5-inch drives are already 15mm thick and using 5 platters. 15mm is the highest standard thickness for a 2.5-inch form-factor, and already incompatible with a decent number of portable devices. External drives, in turn, are the only place these even thicker 2.5-inch drives would fit.
WD's specifications also gloss over whether these drives are based on shingled magnetic recording (SMR) technology. The company was already using SMR for their 5 TB drives in order to hit the necessary storage density there, and WD has since confirmed that this is exactly the case. Which is likely why the company isn't publishing write performance specifications for the drives, as we've seen device-managed SMR drives bottom out as low as 10 MB/second in our testing when the drive needs to rewrite data.
Depending on the specific drive model, all of the external storage drives use either a USB-C connector, or the very quaint USB Micro-B 3.0 connector. Though regardless of the physical connector used, all of the drives feature a USB 3.2 Gen 1 (5Gbps) electrical interface, which is more than ample given the drives' physically-limited transfer speeds.
Wrapping things up, according to WD the new drives are available at retail immediately. The WD My Passport Ultra and WD My Passport Ultra for Mac with USB-C both retail for $199.99; the WD My Passport and WD My Passport for Mac are $179.99; the WD My Passport Works With USB-C is $184.99; the gaming-focused WD_Black P10 Game Drive sells for $184.99, and the SanDisk Professional G-Drive ArmorATD is $229.99. All of Western Digital's external storage drives are backed with a three-year limited warranty.
Sabrent tends to get into news when it launches ultra-high-performance SSDs for enthusiast-grade desktops, but this week the company introduced a completely different type of product: a small form-factor M.2-2242 SSD aimed at Lenovo's Legion Go handheld and ultra-thin laptops that don't accomodate M.2-2280 drives. And even though it's not an enthusiast-grade drive, the Rocket Nano still boasts with quite decent performance and capacity.
The Sabrent Rocket Nano 2242 (SB-2142) drive is based on the Phison E27T platform, a PCIe 4.0 x4 controller that is that is designed for mainstream DRAM-less SSDs, and in the case of the Rocket Nano, is paired with 3D TLC memory. The SSD is available in a single 1TB configuration, and is rated for read speeds up to 5 GB/s. Interestingly, the Phison E27T controller itself is rated for read speeds up to 7 GB/s, so it appears that the petite Rocket Nano isn't making full use of the controller's performance.
Sabrent positions its Rocket Nano 2242 SSD as drives for upgrading Lenovo's Legion Go portable game console, select Lenovo ThinkPad laptops, and other M.2-2242-sized PCs that can't accomodate larger 2280 drives. Keeping in mind that most devices shipping with M.2-2242 SSDscome with pretty slow stock drives, Sabrent solution seems to be a viable product for such upgrades. All the while, Sabrent's Rocket Nano 2242 will also work in systems with a PCIe 3.0 x4 M.2 slots, so the market for these drives is pretty wide.
Sabrent's Rocket Nano 2242 SSD 1 TB (SB-2142-1TB) SSD has a recommended price of $99.99, which is more or less in line with other 1 TB drives in the same form-factor and offering comparable performance. The SSD is currently available at Amazon for $101.
Sources: Tom's Hardware, Sabrent
Seagate Technology has reportedly notified its customers abouts its plans to raise prices on new hard drive orders and for demands that exceed prior agreements, echoing a similar move by Western Digital, which increased its prices earlier this month. These changes come in response to a surge in demand for high-capacity HDDs and constraints in supply due to decreased production capabilities of both Seagate and Western Digital, reports TrendForce.
According to industry insights reported by TechNews, the sector anticipates that the scarcity of high-capacity HDD products will persist throughout the current quarter and possibly extend over the entire year. It is forecasted that HDD prices will rise by 5% to 10% in Q2 2024 alone and could increase further as a reault of the ongoing challenges faced by the storage industry.
The primary driver behind Seagate's decision is increased demand for high-capacity HDDs, which are used to train AI models. This demand spike, coupled with a reduction in production output from hard drive makers, has created a significant supply-demand imbalance. As a result, Seagate has decided to adjust their pricing strategy to manage the situation. Further exacerbating the issue are global inflationary pressures which continue to inflate costs across the board, which also contributed to the company's decision to increase prices, Seagate said in a message to clients published by TrendForce.
Seagate emphasized that its reduced production capacity has been a major challenge, hindering the company's ability to fulfill customer demands fully and promptly.
"As a result, we will be implementing price increases effective immediately on new orders and for demand that is over and above previously committed volumes," the alleged memo from Seagate reads. "Supply constraints are expected to continue and as such we anticipate that prices will continue to increase in the coming quarters."
Earlier this month Western Digital also informed its customers about price hikes for its HDD and SSD products. This notification was based on similar issues — higher than anticipated demand across the whole product range and additional supply chain challenges affecting the electronics sector. Western Digital's announcement made it clear that these disruptions are likely to continue, prompting further price adjustments.
Sources: TrendForce, TrendForce, TechNews
As Seagate ramps up shipments of its new heat assisted magnetic recording (HAMR)-based Mozaic 3+ hard drive platform, the company is both in the enviable position of shipping the first major new hard drive technology in a decade, and the much less enviable position of proving the reliability of the first major new hard drive technology in a decade. Due to HAMR's use of temporal heating with its platters, as well as all-new read/write heads, HAMR introduces multiple new changes at once that have raise questions about how reliable the technology will be. Looking to address these matters (and further promote their HAMR drives), Seagate has published a fresh blog post outlining the company's R&D efforts, and why the company expects their HAMR drives to last several years – as long or longer than current PMR hard drives.
According to the company, the reliability of Mozaic 3+ drives on par with traditional drives relying on perpendicular magnetic recording (PMR), the company says. In fact, components of HAMR HDDs have demonstrated a 50% increase in reliability over the past two years. Seagate says that Mozaic 3+ drives boast impressive durability metrics: their read/write heads have demonstrated capacity to handle over 3.2 petabytes of data transfer over 6,000 hours of operation, which exceeds data transfers of typical nearline hard drives by 20 times. Accordingly, Seagate is rating these drives for a mean time between failure (MTBF) 2.5 million hours, which is in-line with PMR-based drives.
Based on their field stress tests, involving over 500,000 Mozaic 3+ drives, Seagate says that the heads of Mozaic 3+ drives will last over seven years, surpassing the typical lifespan of current PMR-based drives. Generally, customers anticipate that modern PMR drives will last between four and five years with average usage, so these drives would exceed current expectations.
Altogether, Seagate is continuing aim for a seamless transition from PMR to HAMR drives in customer systems. That means ensuring that these new drives can fit into existing data center infrastructures without requiring any changes to enterprise specifications, warranty conditions, or form factors.
Lexar has a long history of serving the flash-based consumer storage market in the form of SSDs, memory cards, and USB flash drives. After having started out as a Micron brand, the company was acquired by Longsys which has diversified its product lineup with regular introduction of new products. Recently, the company announced a number of portable SSDs targeting different market segments. The Lexar SL500 Portable SSD is one of the moderately priced 20 Gbps PSSDs in that set.
The SL500 is able to achieve its price point thanks to the use of a native USB flash controller - the Silicon Motion SM2320. The unique aspect is the use of YMTC 3D TLC NAND (compared to the usual Micron or BiCS NAND that we have seen in previous SM2320-based PSSDs). Read on for a detailed look at the SL500, including an analysis of its internals and evaluation of its performance consistency, power consumption, and thermal profile.
SK hynix is one of the few vertically integrated manufacturers in the flash-based storage market. The company is well-established in the OEM market. A few years back, they also started exploring direct end-user products. Internal SSDs (starting with the Gold S31 and Gold P31) were the first out of the door. Late last year, the company introduced the Beetle X31 portable SSD, its first direct-attached storage product. In February, a complementary product was introduced - the Tube T31 Stick SSD.
The Beetle X31 is a portable SSD with a Type-C upstream port and a separate cable. The Tube T31 is a take on the traditional thumb drive with a male Type-A interface. The size of the Beetle X31 makes the use of a bridge solution obvious. Our investigation into the Tube T31 also revealed the use of the same internal SSD, albeit with a different bridge. Read on for a detailed look at the Tube T31, including an analysis of its internals and evaluation of its performance consistency, power consumption, and thermal profile.
Western Digital this week is previewing the industry's first 4 TB SD card. The device is being showcased at the NAB trade show for broadcasters and content creators and will be released commercially in 2025.
Western Digital's SanDisk Extreme Pro SDUC 4 TB SD card complies with the Secure Digital Ultra Capacity standard (SDUC, which enables up to 128TB). The card uses the Ultra High Speed-I (UHS-I) interface and is rated for speed Class 10, therefore supporting a minimum speed of 10 MB/s and a maximum data transfer rate of 104 MB/s when working in UHS104 (SDR104) mode (there is a catch about performance, but more on that later). WD's SD card is also rated to meet Video Speed Class V30, supporting a minimal sequential write speed of 30 MB/s, which is believed to be good enough for 8K video recording, above and beyond the 4K video market that Western Digital is primarily aiming the forthcoming card at.
For now, Western Digital is not disclosing what NAND is in the SanDisk Extreme Pro SDUC 4 TB SD card. Given the high capacity and relatively distant 2025 release date, WD may be targetting this as one of their first products to use their forthcoming BiCS 9 NAND.
And while not listed in WD's official press release, we would be surprised if the forthcoming card didn't also support the off-spec DDR200/DDR208 mode, which allows for higher transfer rates than the UHS-I standard normally allows via double data rate signaling. Western Digital's current-generation SanDisk Extreme Pro SDXC 1 TB SD card already supports that mode, allowing it to reach read speeds as high as 170 MB/s, so it would be surprising to see the company drop it from newer products. That said, the catch with DDR208 remains the same as always: it's a proprietary mode that requires a compatible host to make use of.
Western Digital has not disclosed how much will its SanDisk Extreme Pro SDUC 4 TB SD card cost. A 1 TB SanDisk Extreme Pro card costs $140, so one can make guesses about the price of a 4 TB SD card that uses cutting-edge NAND.
Nowadays highest-capacity hard drives are typically aimed at cloud service providers (CSPs) and enterprises, but this does not mean that creative professionals or regular users do not need them. To cater to demands of more regular consumers, Western Digital has started shipments of its Red Pro 24 TB HDDs, which are aimed at high-end NAS use for creative professionals with significant storage requirements.
Western Digital's Red Pro 24 TB hard drives come approximately 20 months after their 22 TB model hit retail in 2022, offering an incremental improvement to WD's highest-capacity NAS and consumer hard drive offering. The platform uses conventional magnetic recording (CMR), feature a 7200 RPM rotating speed, are equipped with a 512 MB cache, and use OptiNAND technology to improve reliability as well as optimize performance and power consumption. The HDDs are rated for an up to 287 MB/s media to cache transfer rate, which makes them some of the fastest hard drives around (albeit, still a bit slower compared to CSP and enterprise-oriented HDDs).
Just like other high-end network-attached storage-aimed HDDs, the Red Pro 24 TB hard drives use helium-filled platforms that are very similar to those designed for enterprise drives. Consequently, the Red Pro 24 TB HDD are equipped with rotation vibration sensors to anticipate and proactively counteract disturbances caused by increased vibration and multi-axis shock sensors to detect subtle shock events and automatically offset them with dynamic fly height technology to ensure that heads to not scratch disks.
UPDATE 4/2/2024: Western Digital has notified us that WD Red Pro fully support ArmorCache capability, even though it is not listed in datasheets.
What these drives lack compared Apparently, just like WD Gold and Ultraster 22 TB and 24 TB drives for enterprises and cloud datacenters, WD Red Pro HDDs fully support the ArmorCache feature that provides protection against power loss when write-cache is enabled (WCE mode) and enhances performance when write-cache is disabled (WCD mode).
On the reliability side of matters, Western Digital's Red Pro 24 TB HDDs are designed for 24/7 operation in vibrating environments, such as enterprise-grade NAS with loads of bays, and are rated for up to 550 TB/year workloads as well as up to 600,000 load/unload cycles, which is in line with what Western Digital's WD Gold and Ultrastar hard drives offer.
As for power consumption, the WD Red Pro 24 TB consumes up to 6.4W during read and write operations, up to 3.9W in idle mode, and up to 1.2W in standby/sleep mode.
Western Digital's Red Pro 24 TB (WD240KFGX) HDDs are now shipping to resellers as well as NAS makers, and are slated to be available shortly. Expect these hard drives to be slightly cheaper than the WD Gold 24 TB model.
SK hynix is set to unveil their first Gen5 consumer NVMe SSD lineup shortly, based on the products at display in their GTC 2024 booth. The Platinum P51 M.2 2280 NVMe SSD will take over flagship duties from the Platinum P41 that has been serving the market for more than a year.
Similar to the Gold P31 and the Platinum P41, the Platinum P51 also uses an in-house SSD controller. The key updates are the move to PCIe Gen5 and the use of SK hynix's 238L TLC NAND. Other details are scarce, and we have reached out for additional information.
| SK hynix Platinum P51 Gen5 NVMe SSD Specifications | ||||
| Capacity | 500 GB | 1 TB | 2 TB | |
| Controller | SK hynix In-House (Alistar) | |||
| NAND Flash | SK hynix 238L 3D TLC NAND at ?? MT/s ('4D' with CMOS circuitry under the NAND as per SK hynix marketing) | |||
| Form-Factor, Interface | M.2-2280, PCIe 5.0 x4, NVMe 2.0 | |||
| Sequential Read | 13500 MB/s | |||
| Sequential Write | 11500 MB/s | |||
| Random Read IOPS | TBD | |||
| Random Write IOPS | TBD | |||
| SLC Caching | Yes | |||
| TCG Opal Encryption | TBD | |||
| Warranty | TBD | |||
| Write Endurance | TBD | TBD | TBD | |
Only the peak sequential access numbers were available at the GTC booth, indicating that the drive's firmware is still undergoing tweaks. It is also unclear how these numbers are going to vary based on capacity. Availability and pricing are also not public yet.
This is a significant launch for the Gen5 consumer SSD market, where the number of available options are quite limited. The Phison E26 controller and Micron's B58R NAND combination is already in its second generation (with the NAND operating at 2400 MT/s in the newest avatar), but other vertically integrated vendors such as Samsung, Western Digital / Kioxia, and SK hynix (till now) are focusing more on the Gen4 market which has much higher adoption.
We will update the piece with additional information once the specifications are officially available.
The DNA Data Storage Alliance introduced its inaugural specifications for DNA-based data storage this week. This specification outlines a method for encoding essential information within a DNA data archive, crucial for developing and commercializing an interoperable storage ecosystem.
DNA data storage uses short strings of deoxyribonucleic acid (DNA) called oligonucleotides (oligos) mixed together without a specific physical ordering scheme. This storage media lacks a dedicated controller and an organizational means to understand the proximity of one media subcomponent to another. DNA storage differs significantly from traditional media like tape, HDD, and SSD, which have fixed structures and controllers that can read and write data from the structured media. DNA's lack of physical structure requires a unique approach to initiate data retrieval, which brings its peculiarities regarding standardization.
To address this, the SNIA DNA Archive Rosetta Stone (DARS) working group, part of the DNA Data Storage Alliance, has developed two specifications, Sector Zero and Sector One, to facilitate the process of starting a DNA archive.
Sector Zero serves as the starting point, providing minimal details necessary for the archive reader to identify the entity responsible for synthesizing the DNA (e.g., Dell, Microsoft, Twist Bioscience) and the CODEC used for encoding Sector One (e.g., Super Codec, Hyper Codec, Jimbob's Codec). Sector Zero consists of 70 bases: the first 35 bases identify the vendor, and the second 35 bases identify the codec. The information in Sector Zero enables access and decoding of data stored in Sector One. The amount of data stored in SZ is small and fits into a single oligonucleotide.
Sector One expands on this by including a description of the contents, a file table, and parameters required for transferring data to a sequencer. This specification ensures that the main body of the archive is accessible and readable, paving the way for data retrieval. Sector One contains exactly 150 bases and will span multiple oligonucleotides.
"A key goal of the DNA Data Storage Alliance is to set and publish specifications and standards that allow an interoperable DNA data storage ecosystem to grow," said Dave Landsman, of the DNA Data Storage Alliance Board of Directors. "With the publishing of the Alliance's first specifications, we take an important step in achieving that goal. Sector Zero and Sector One are now publicly available, allowing companies working in the space to adopt and implement."
The DNA Data Storage Alliance is led by Catalog Technologies, Inc., Quantum Corporation, Twist Bioscience Corporation, and Western Digital (though we are unsure whether Western Digital's NAND or HDD division is responsible for developing the specification). Meanwhile, numerous industry giants, including Microsoft, support the DNA Data Storage Alliance.
Source: SNIA
Western Digital had unveiled the SanDisk Professional PRO-BLADE modular SSD ecosystem in mid-2022 to serve the needs of the professional market. Compact and sturdy NVMe drives (PRO-BLADE SSD Mag) swappable across discrete bus-powered enclosures (PRO-BLADE TRANSPORT), and also compatible with a multi-bay reader (PRO-BLADE STATION) have perfectly fit the requirements of multi-user / multi-site workflows in the content capture industry. Read on for a detailed look at the first-generation PRO-BLADE SSD Mags and the PRO-BLADE TRANSPORT enclosure. In addition to the evaluation of the performance consistency, power consumption, and thermal profile, an analysis of the internals is also included.
Now well in the midst of executing its plan to divide itself into separate hard drive and NAND businesses, Western Digital today offered a fresh update on the state of that split, and what the next steps are for the company. With the eventual goal of dividing the company into two independent, publicly traded companies, Western Digital is reporting that they have made significant progress in key transactional projects, and they are also announcing their initial leadership appointments for the post-separation businesses.
Western Digital's separation, announced on October 30, 2023, aims to create two focused companies with distinct product lineups for hard drives and NAND flash memory, respectively, as well as NAND flash memory-based products. This move is expected to speed up innovation and introduce new growth opportunities, according to Western Digital. Meanwhile, with separate capital structures, operational efficiency of the two entities will be higher compared to the united company, the management of Western Digital claims.
Western Digital led the storage industry's consolidation by acquiring HGST, various SSD and flash companies in the early 2010s, and SanDisk in 2016 for NAND flash production. As a result, in late 2010s the company become a media-agnostic, vertically-integrated storage technology company. However, the company faced challenges in growing its revenue. The 3D NAND and SSD markets are highly competitive commodity markets, and as a result they tend to fluctate depending on supply and demand. Meanwhile, demand for HDDs is declining and offseting decreasing unit sales with 3D NAND-based products and nearline hard drives was challenging. Meanwhile, to avoid avoid competition with larger storage solutions providers like Dell, HPE, and IBM — which purchase Western Digital's HDDs, SSDs, and NAND memory — Western Digital had to divest its storage solutions, which presents additional challenges.
As a result, Western Digital's HDD and NAND businesses have acted largely independently since late 2020, when it became apparent that the combined company has failed to become bigger than the sum of Western Digital and SanDisk parts. So far, quite some progress has been made in preparing for the separation, including establishing legal entities in 18 countries, preparing independent financial models, and finalizing preparations for regulatory filings. As a result, the company remains on track to finish the split in the second-half of this year, according to Western Digital.
With regards to post-split leadership, David Goeckeler has been appointed as the chief executive designate for the NAND flash memory spinoff company. He expressed enthusiasm for the NAND business's potential in market growth and the development of new memory technologies.
"Today's announcement highlights the important steps we are making towards the completion of an extremely complex transaction that incorporates over a dozen countries and spans data storage technology brands for consumers to professional content creators to the world’s leading device OEMs and the largest cloud providers," said David Goeckeler, CEO of Western Digital. "I am pleased with the exceptional work the separation teams have done so far in creating a spin-ready foundation that will ensure a successful transition to independent, market-leading companies for our Flash and HDD businesses."
Meanwhile, Irving Tan, currently executive vice president of global operations, will assume the CEO role for the standalone HDD company, which will continue to operate under the Western Digital brand. It is unclear where Ashley Gorakhpurwalla, currently the head of WDC's HDD business unit, will end up, or if he'll even remain with the company at all.
"While both Western Digital's businesses will have the strategic focus and resources to pursue exciting opportunities in their respective markets once the separation is complete, the Flash business offers exciting possibilities with market growth potential and the emerging development of disruptive, new memory technologies," added Goeckeler. "I am definitely looking forward to what's next for the spinoff team."
Silicon Power announced the MS70 and PX10 Portable SSDs in late 2023. The company is well known for offering entry- and mid-range products at compelling price points, but the two products came with plenty of promises in the 1GBps-class category. The MS70 promised high storage density (up to 2TB in a compact thumb drive), while the PX10 targeted power users and professionals with performance consistency as the focus. Read on for a detailed look at the Silicon Power PX10 including an analysis of its internals, value proposition, and evaluation of its performance consistency, power consumption, and thermal profile.
Crucial is unveiling the latest addition to its Gen5 consumer NVMe SSD lineup today - the T705 PCIe 5.0 M.2 2280 NVMe SSD. It takes over flagship duties from the Crucial T700 released last year. The company has been putting focus on the high-end consumer SSD segment in the last few quarters. The T700 was one of the first to offer more than 12 GBps read speeds, and the T705 being launched today is one of the first drives available for purchase in the 14+ GBps read speeds category.
The Crucial T705 utilizes the same platform as the T700 from last year - Phison's E26 controller with Micron's B58R 232L 3D TLC NAND. The key difference is the B58R NAND operating at 2400 MT/s in the new T705 (compared to the 2000 MT/s in the T700). Micron's 232L NAND process has now matured enough for the company to put out 2400 MT/s versions with enough margins. Similar to the T700, this drive is targeted towards gamers, content creators, and professional users as well as data-heavy AI use-cases.
The move to 2400 MT/s NAND has allowed Crucial to claim an increase in the performance of the drive in all four corners - up to 20% faster random writes, and 18% higher sequential reads. Additionally, Crucial also claims more bandwidth in a similar power window for the new drive.
The T705 is launching in three capacities - 1TB, 2TB, and 4TB. Both heatsink and non-heatsink versions are available. Crucial is also offering a white heatsink limited edition for the 2TB version. This caters to users with white-themed motherboards that are increasingly gaining market presence.
Phison has been pushing DirectStorage optimizations in its high-end controllers, and it is no surprise that the T705 advertises the use of Phison's 'I/O+ Technology' to appeal to gamers. Given its high-performance nature, it is no surprise that the E26 controller needs to be equipped with DRAM for managing the flash translation layer (FTL). Crucial is using Micron LPDDR4 DRAM (1GB / TB of flash) in the T705 for this purpose.
| Crucial T705 Gen5 NVMe SSD Specifications | ||||
| Capacity | 1 TB | 2 TB | 4 TB | |
| Model Numbers | CT1000T705SSD3 (Non-Heatsink) CT1000T705SSD5 (Heatsink) |
CT2000T705SSD3 (Non-Heatsink) CT2000T705SSD5 (Black Heatsink) CT2000T705SSD5A (White Heatsink) |
CT4000T705SSD3 (Non-Heatsink) CT4000T705SSD5 (Heatsink) |
|
| Controller | Phison PS5026-E26 | |||
| NAND Flash | Micron B58R 232L 3D TLC NAND at 2400 MT/s | |||
| Form-Factor, Interface | Double-Sided M.2-2280, PCIe 5.0 x4, NVMe 2.0 | |||
| Sequential Read | 13600 MB/s | 14500 MB/s | 14100 MB/s | |
| Sequential Write | 10200 MB/s | 12700 MB/s | 12600 MB/s | |
| Random Read IOPS | 1.4 M | 1.55 M | 1.5 M | |
| Random Write IOPS | 1.75 M | 1.8 M | 1.8 M | |
| SLC Caching | Dynamic (up to 11% of user capacity) | |||
| TCG Opal Encryption | Yes | |||
| Warranty | 5 years | |||
| Write Endurance | 600 TBW 0.33 DWPD |
1200 TBW 0.33 DWPD |
2400 TBW 0.33 DWPD |
|
| MSRP | $240 (24¢/GB) (Non- Heatsink) $260 (26¢/GB) (Heatsink) |
$400 (20¢/GB) (Non- Heatsink) $440 (22¢/GB) (Black Heatsink) $484 (24.2¢/GB) (White Heatsink) |
$714 (17.85¢/GB) (Non- Heatsink) $730 (18.25¢/GB) (Heatsink) |
|
Crucial is confident that the supplied passive heatsink is enough to keep the T705 from heavy throttling under extended use. The firmware throttling kicks in at 81C and protective shutdown at 90C. Flash pricing is not quite as low as it was last year, and the 2400 MT/s flash allows Micron / Crucial to place a premium on the product. At the 4TB capacity point, the drive can be purchased for as low as 18¢/GB, but the traditional 1TB and 2TB ones go for 20 - 26 ¢/GB depending on the heatsink option.
There are a number of Gen5 consumer SSDs slated to appear in the market over the next few months using the same 2400 MT/s B58R 3D TLC NAND and Phison's E26 controller (Sabrent's Rocket 5 is one such drive). The Crucial / Micron vertical integration on the NAND front may offer some advantage for the T705 when it comes to the pricing aspect against such SSDs. That said, the Gen5 consumer SSD market is still in its infancy with only one mass market (Phison E26) controller in the picture. The rise in consumer demand for these high-performance SSDs may coincide with other vendors such as Innogrit (with their IG5666) and Silicon Motion (with their SM2508) gaining traction. Currently, Crucial / Micron (with their Phison partnership) is the only Tier-1 vendor with a high-performance consumer Gen5 SSD portfolio, and the T705 cements their leadership position in the category further.
Seagate's financial reports have been indicating imminent mass production of HAMR HDDs for a few years now, and it looks like the wait for these drives to appear in retail is finally at an end. The Seagate Exos product family is getting a 30TB capacity point, thanks to the use of heat-assisted magnetic recording (HAMR) technology. The company talked to the press last week about the Mozaic 3+ platform – their first high-volume HAMR platform – and how it sets the stage for rapid areal density scaling over the next few years.
Seagate's new Exos 30TB HDDs use platters with an areal density of 3TB per platter, and Seagate has plans to scale that up at a rate of up to 20% generation-over-generation in the next few years (compared to the 8% rate that CMR HDD capacities have been growing at in the last decade or so). The company indicated that volume shipments are happening this quarter to hyperscalers. Seagate is observing that the average customer upgrading from a 16TB conventional magnetic recording platform to the new 30TB+ HDDs can almost double the capacity of their server racks in the same footprint, as the new drives are drop-in replacements. This brings TCO benefits, particularly in terms of power consumption. The company is even quantifying that - the Exos X16's average power consumption of 9.44W translates to 0.59W / TB. The new Exos 30TB's equivalent number is a bit higher at 10.5W, but that translates to a 40% power savings on a per-TB basis at 0.35W / TB.
The company stressed upon the fact that HAMR needed a host of other breakthroughs grouped under the new Mozaic 3+ tag in order to achieve the areal density breakthrough enabling the new Exos family. These include:
Areal density gains are primarily driven by smaller grain sizes in the magnetic media. However, legacy magnetic platter media is not stable at very small grain sizes. Along with Showa-Denko, Seagate has developed a superlattice iron-platinum structure with increased magnetic coercivity to allow for precise and stable data recording. The HAMR process requires heating up of the grain in order to alter its state, and Seagate has achieved this using a nanophotonic laser that is vertically integrated into the plasmonic writer sub-system. The reading head has also needed to evolve in order to tap into the smaller grains. All of these advancements work together thanks to a newly developed controller (built on TSMC's 12nm process) that Seagate claims to deliver 3x the performance of existing solutions.
Seagate expects the Mozaic platform to lead to 5TB/platter as early as 2028.
Areal density scaling is one of the key aspects in addressing the HDD capacity issue. One aspect that this scaling has not addressed is the IOPS/TB metric, where SSDs are in a much better place to take advantage of advancements in host interface technology. The Mozaic platform is orthogonal to currently-used HDD technologies such as dual actuators and shingled-magnetic recording. Additional benefits can be gleaned from those, but the IOPS/TB metric scaling is an aspect that needs industry-wide efforts to address to keep HDDs relevant in more application areas.
Seagate works with vendors such as Showa-Denko for the platters and TDK for the recording heads. Some of the Mozaic 3+ innovations have been jointly developed with them. While the exact details of the joint development are confidential, Seagate indicated that they have a time-limited exclusive use for these technological advancements. If, and when, other HDD vendors move to HAMR, it appears that Seagate has a healthy lead to fall back on with respect to these core HAMR platform components. The company is also expecting the Mozaic 3+ technology to address use-cases as as NAS, and video / imaging markets. It is only a matter of time before HAMR moves from Exos to the IronWolf and SkyHawk families.
The network-attached storage (NAS) market had a break-out decade in the 2010s, with a large number of vendors trying to get a slice of the pie. Brands such as EMC / Lenovo and Thecus have fallen by the wayside, and even established storage vendors like Seagate decided to drop out of the market. QNAP and Synology have held firm in the commercial off-the-shelf (COTS) NAS market meant for home users, prosumers, SOHO, and SMB installations. ASUSTOR (backed by ASUS) has also been regularly releasing NAS units since their first product appeared in late 2012. TerraMaster released their first NAS around the same time, but opted to focus more on the direct-attached storage segment throughout the 2010s. The brand has shown renewed interest in the NAS market over the last few years. Despite the cut-throat competition in the COTS NAS market, some Asian vendors are attempting to get a toe-hold after establishing themselves in allied markets. UGREEN, a consumer electronics brand known for its power banks, chargers, USB adapters, and docks has also announced its entry into the NAS market, but we will cover that in a separate article.
Asustor, Buffalo, QNAP, Synology, TerraMaster, and Western Digital are currently the main options available for users looking to purchase a COTS NAS for SOHO / SMB use. Out of these, Buffalo and WD update their hardware options only once every 3 or 4 years. The others have a more regular cadence to their portfolio additions while continuing to maintain software support for the legacy units - sometimes even NAS units released as far as 10 years ago.
CES has usually been a good platform for NAS vendors, allowing them to show their latest and greatest in both hardware and software, and occasionally announce new models. However, the allure has been lost in recent years. It started with Synology and QNAP starting their own conference aimed towards partners / resellers and developers. Eventually, CES became relatively quiet for this market segment. Other business conferences focused on virtualization, security etc. are turning out to be better events for these NAS vendors. Overall, CES is no longer an important show for the NAS market. Having said that, the rest of this piece captures some of the announcements made in the NAS space around the 2024 CES time-frame.
At the 2024 CES, UGREEN made a big splash with the hardware options for their upcoming NASync series. Synology's booth rehashed units that have been around for a major part of 2023. A chuckle-worthy DS224+ (using an ancient Intel Celeron J4125) was also on display. ASUSTOR had a tiny presence in ASUS's suite, and the other NAS vendors gave the show a miss.
ASUSTOR has updated their lineup of Arm-based NAS units for home / personal use, and the units are already available for purchase. The new Drivestor 2 Lite, 2 Pro Gen2, and 4 Pro Gen2 use a new Realtek processor - the RTD1619B. This is a quad-core Cortex-A55 SoC with the CPU running at 1.7 GHz. The Arm Mali-G51 MP3 in the SoC is clocked at 650 MHz. This lineup takes over the Drivestor 2, 4, 2 Pro, and 4 Pro units which had the Realtek RTD1296 (quad-core Cortex-A53 at 1.4 GHz). The increased processing power in the new processor, coupled with a new SDK from Realtek, has now allowed ASUSTOR to bring btrfs support in this lineup.
Despite using the same SoC, the Lite model differentiates itself from the Pro model by opting for half the RAM, and restricting itself to a 1 GbE LAN port (compared to the 2.5 GbE in the Pro ones). Two USB 3.2 Gen 1 Type-A ports in the Pro models are placed by a USB 2.0 port in the Lite model. There are two drive bays, but the drives themselves are not hot-swappable. ASUSTOR is promoting the transcoding performance of the new performance and portraying the Drivestor 2 Lite as a capable NAS for Plex and their own 'LooksGood' application.
The Pro Gen2 models have hot-swappable bays. In addition to the hardware configuration updates, ASUSTOR is promoting a different set of applications such as Portainer (Docker) compared to the Lite model. The differences in the specifications are brought out in the table below.
| ASUSTOR 2024 Drivestor Lineup | |||
| Model | Drivestor 2 Lite | Drivestor 2 Pro Gen2 | Drivestor 4 Pro Gen2 |
| ID | AS1102TL | AS3302T v2 | AS3304T v2 |
| SoC Platform | Realtek RTD1619B (4x Cortex-A55 @ 1.7 GHz / Arm Mali-G51 MP3) |
||
| RAM | 1 GB DDR4 (Soldered) | 2 GB DDR4 (Soldered) | |
| OS Storage | 8GB eMMC | ||
| Internal Storage / Bays | 2x 3.5" SATA | 4x 3.5" SATA | |
| I/O Ports | 1x USB 3.2 Gen 1 1x USB 2.0 |
3x USB 3.2 Gen 1 | |
| Network Ports | 1x RJ-45 (1 GbE) | 1x RJ-45 (2.5 GbE) | |
| Power Adapter | 65W (External) | 90W (External) | |
| Dimensions and Weight | 165mm x 102mm x 218mm / 1.14 kg | 170mm x 114mm x 230mm / 1.6 kg | 170mm x 174mm x 230mm / 2.2 kg |
| Price | $175 | $269 | $339 |
ASUSTOR has moved to the same platform adopted by Synology for the DS223 and other 23-series personal / home NAS models, keeping pace with the processing power offered by the competition. The introduction of btrfs support in this lineup now brings easy snapshots (and a bit of ransomware protection) to ASUSTOR's customers at an affordable price point.
TerraMaster recently updated their entry-level x86 NAS lineup for SOHO / SMB setups. This segment was served last year by the 423 series based on Jasper Lake (Celeron N5095). The 424 series utilizes Alder Lake-N. With Intel promoting an octa-core configuration as a Core i3 in this series, TerraMaster is also launching a 424 Pro utilizing the Core i3-N300.
The specifications of the three units are summarized in the table below.
| TerraMaster 424 NAS Series (Alder Lake-N) | |||
| Model | F2-424 | F4-424 | F4-424 Pro |
| SoC Platform | Intel N95 (4x Gracemont @ up to 3.4 GHz / Intel UHD Graphics) |
Intel Core i3-N300 (8x Gracemont @ up to 3.8 GHz / Intel UHD Graphics) |
|
| RAM | 1x 8 GB DDR5-4800 SODIMM (Expandable to 1x 32 GB) | 1x 32 GB DDR5-4800 SODIMM | |
| Internal Storage / Bays | 2x 3.5" SATA 2x M.2 2280 Gen3 x4 NVMe |
4x 3.5" SATA 2x M.2 2280 Gen3 x4 NVMe |
|
| I/O Ports | 1x USB 3.2 Gen 2 (Type-A) 1x USB 3.2 Gen 2 (Type-C) |
||
| Network Ports | 2x RJ-45 (2x 2.5 GbE) | ||
| Power Adapter | 40W (External) | 90W (External) | |
| Dimensions and Weight | 222mm x 119mm x 154mm / 2.2 kg | 222mm x 179mm x 154mm / 3.4 kg | |
| Price | $380 | $500 | $700 |
The TNAS operating system (TOS) is currently at 5.1, with the release of TOS 6.0 in the near future. Being a comparatively new entrant to the NAS world, the OS and mobile applications lack the polish of the offerings from established vendors, but the good news is that things can only improve from here. The hardware itself is quite capable, and the new 424 series is the first Alder Lake-N-based COTS NAS that we have seen for purchase. Terramaster had earlier experimented with a 10 GbE NAS using Apollo Lake, though it was unable to saturate that interface. The company seems to have opted for a more cost-effective platform with Alder Lake-N in the 424 series.
QNAP remains busy throughout the year, regularly announcing hardware with the latest and greatest from Intel / AMD / ARM-based SoC vendors. The company also takes pride in updating different 'plugins' / first-party applications for their QTS / QuTS Here operating systems to increase their usefulness. Similar to Synology, the focus is slowly shifting more towards business users as a majority of their recent announcements have been related to their ZFS-enabled QuTS Hero-running NAS units.
At the 2023 CES, the company had teased their first consumer-focused hot-swappable all-flash NAS with M.2 / E1.S SSD support. The TBS-h574TX reached retail in late 2023, and QNAP uploaded a comprehensive video detailing the usage and features of the unit last month. After participating in the launch webinar prior to that, my expectations were tempered a bit. In the year since its teaser, the E1.S form-factor has not taken off as expected. Instead, we saw vendors like Solidigm and Micron focus on the traditional 2.5" form-factor with U.2 and U.3 SSDs. E1.L is making more sense for rackmount machines requiring very high storage density, but the general market trend seems to be more towards U.2 / U.3 for both consumer and SMB / SME on-premise usage. 2023 also saw the launch of 64TB-class U.2 / U.3 SSDs, and this form-factor seems widely available for purchase.
We believe that the M.2 form-factor in the NAS is better suited for caching and/or non-hot-swappable storage, while U.2 / U.3 makes more sense for hot-swappable units. QNAP pioneered the all-flash consumer NAS with the TBS-464 and ASUSTOR's Flashstor series made additional options available. The TBS-h574TX brings hot-swap into the picture, but some of the drawbacks of the designs still remain. For example, none of the SSD slots get the full four-lane capability, even though they physically accept x4 SSDs. QNAP contends that this is enough to saturate the 10GbE link, but that seems like a trade-off best avoided when it is possible to use the network port along with Thunderbolt (acting in IP mode with only 10 Gb capability per port) to have a 30 GbE up / 30 GbE down configuration. Single-slot occupancy can't deliver full performance in that configuration. In any case, QNAP believes their video production house customers will still find this unit delivering better performance than other options currently available in this form-factor, and they may be right on the practical front.
At $1200, this Raptor Lake-based system is not particularly cheap. Despite using an embedded part (Core i3-1340PE) which comes with in-band ECC support from Intel, QNAP doesn't have that enabled in the system (hopefully it is something that can be addressed in a future update). Overall, this product seems like a missed opportunity for QNAP in the all-flash consumer NAS market.
Moving on to the latest hardware introductions, QNAP is focusing more on ZFS-enabled NAS units now. The company recently introduced two rackmount units based on the Ryzen 7000 series, and their specifications are summarized in the table below.
| QNAP TS-h77AXU-RP Series (Ryzen 7000 Series) | ||||
| Model | TS-h1277AXU-RP-R5-16G | TS-h1277AXU-RP-R7-32G | TS-h1677AXU-RP-R7-32G | |
| Platform | AMD Ryzen 5 7600 (6C/12T Zen 4 @ up to 5.1 GHz / AMD Radeon Graphics) |
AMD Ryzen 7 7700 (8C/16T Zen 4 @ up to 5.3 GHz / AMD Radeon Graphics) |
||
| RAM (ECC UDIMMs Supported) | 1x 16 GB DDR5-5200 UDIMM (Expandable to 4x 32 GB) | 1x 32 GB DDR5-5200 UDIMM (Expandable to 4x 32 GB) | ||
| Internal Storage / Bays | 12x 3.5" SATA 2x M.2 2280 Gen5 x2 NVMe |
16x 3.5" SATA 2x M.2 2280 Gen5 x2 NVMe |
||
| I/O Ports | 2x USB 3.2 Gen 2 (Type-A) | |||
| Network Ports | 4x RJ-45 ([2x 2.5 GbE] + [2x 10GBASE-T]) | |||
| PCIe Expansion Slots | (Slot 1 + Slot 2): (Gen4 x4 + Gen4 x4) or (N/A + Gen4 x8) Slot 3: Gen4 x4 |
|||
| Power Supply | 550W x2 | |||
| Dimensions and Weight | (2U) 88.65mm x 432.05mm x 511.3mm / 13 kg | (3U) 131.32mm x 482.09mm x 550.93mm / 15.64 kg | ||
| Price | $3299 | $3999 | $4699 | |
All models utilize 5GB of flash storage with dual-boot OS protection. ZFS support brings in deduplication and other features important for enterprise deployments. These are some of the first NAS units to support Gen5 M.2 SSDs (albeit, with x2 links), and QNAP advises use of their own heat-sink on them for use in these rackmounts. The redundant power supply configuration is also important in the use-case scenarios for these units, and the available expansion slots allows end users / IT administrators to add 25GbE network cards or SAS / SATA storage expansion cards as required. GPU pass-through is also supported, which can help specific virtualization setups where the VM and associated storage setup run on the same server block.
In software news from QNAP, the company is also promoting its machine-learning based drive failure prediction tool that uses a cloud-based engine beyond the traditional SMART readouts. It uses a third-party engine and requires a license purchase for use on more than one disk per NAS. QNAP is also touting its SSD anti-wear leveling features (QSAL) as a differentiating aspect of its QuTS ZFS operating system. These types of value-additions may help QuTS go head-to-head against options like TrueNAS.
After Samsung's earlier product page snafu, the company is officially launching their next-generation mainstream client SSD today. The 990 EVO will be available in both 1TB and 2TB capacities, and offers an interesting mix of both PCIe Gen 5 and PCIe Gen 4 support by allowing up to 2 lanes of PCIe connectivity at Gen 5 speeds, or up to 4 lanes at Gen 4 and below.
The release of the 990 EVO marks the return of the EVO SSD brand after it was quietly put aside during the 980 generation, when Samsung's sole non-PRO drive was the vanilla 980 SSD. Consequently, Samsung's own performance comparisons for the new drive are against the most recent EVO, the 970 EVO Plus, though similar to how the vanilla 980 was effectively the 970 EVO successor, in many ways this is the successor to the 980.
The drives are available immediately from Samsung. The company has set the retail prices of the drives at $125 for the 1TB model, and $210 for the 2TB. These are stiff prices for a drive debuting in the highly-competitive mainstream SSD market, though admittedly not unusual for a Samsung drive launch.
Our original story (with updated technical specifications) follows as below:
Originally Published: 01/09/2024
Samsung's launch of the 990 EVO M.2 2280 SSD appears to be imminent, as official product pages with specifications went live in certain regions a few days back before getting pulled down.
The most interesting aspect the 990 EVO is not the claimed speeds, but the fact that it can operate in either Gen 4 or Gen 5 modes with different number of lanes. The recently launched mobile platforms from both AMD and Intel use Gen 4 lanes for the storage subsystem. However, with progress in technology it is inevitable that this will move to Gen 5 in the future. In the meanwhile, thermal constraints in mobile systems may prevent notebook manufacturers from going in for desktop Gen 5 speeds (8 - 14 GBps). An attractive option for such cases would be to move to a two-lane Gen 5 implementation that would help in retaining the same Gen 4 x4 bandwidth capability, but cut down on the BOM cost by reducing the number of pins / lane count on the host side. It appears that Samsung's 990 EVO is a platform designed with such a scenario in mind.
PCIe PHYs / controllers have backward compatibility, and the 990 EVO's SSD controller incorporates a 4-lane Gen 5 controller and PHY. During the training phase with the host, both the link bandwidth and lane count can be negotiated. It appears that the SSD is configured to advertise Gen 5 speeds to the host if only two lanes are active.
Samsung appears to be marketing only 1TB and 2TB capacities of the 990 EVO. Based on the product photos online, the models appear to be single-sided units (making them compatible with a wider variety of mobile platforms). The flash packages appear to be 1TB each, and the EVO moniker / advertisement of Host Memory Buffer support / controller package markings in the product photos points to a DRAM-less SSD controller - the Piccolo S4LY022. The quoted performance numbers appear low for a 176L / 236L V-NAND product. TechPowerUp believes that these SSDs are using an updated V6 (133L, termed V6 Prime) with better efficiency and yields compared to the regular V6.
| Samsung 990 EVO Specifications | ||||
| Capacity | 1 TB | 2 TB | ||
| Controller | Samsung S4LY022 Piccolo | |||
| NAND Flash | Samsung Updated 6th Gen. V-NAND (133L 3D TLC) | |||
| Form-Factor, Interface | Single-Sided M.2-2280, PCIe 4.0 x4 / 5.0 x2, NVMe 2.0 | |||
| Sequential Read | 5000 MB/s | 5000 MB/s | ||
| Sequential Write | 4200 MB/s | 4200 MB/s | ||
| Random Read IOPS | 680K | 700K | ||
| Random Write IOPS | 800K | 800K | ||
| SLC Caching | Yes | |||
| TCG Opal Encryption | Yes | |||
| Warranty | 5 years | |||
| Write Endurance | 600 TBW 0.3 DWPD |
1200 TBW 0.3 DWPD |
||
Samsung is also touting much-improved power efficiency, with transfer rates being 2 - 3x per Watt compared to the 970 EVO. The Piccolo controller's 5nm fabrication process and the V6 Prime's efficiency improvements have a significant say in that aspect.
Pricing and concrete launch dates for the 990 EVO are not available yet. The delta in specifications for the 1TB and 2TB models will be updated in the table above once the drives are officially announced. The 1TB model is priced at $125 and the 2TB version at $210. Both SKUs are available for purchase today.
LaCie's portable storage drives have enjoyed a fan following, particularly among creative professionals valuing both performance and product design / appearance. After Seagate's acquisition, the brand has continued to cater to this segment with new products. The company has both USB 3.2 Gen 2 and Thunderbolt 3 SSDs under the LaCie brand, and is adding a new 2 GBps-class Rugged Mini SSD today.
The USB 3.2 Gen 2x2 (20 Gbps) ecosystem has been gaining traction recently after the launch of a number of low-cost portable SSDs based on native controllers. The new LaCie Rugged Mini SSD belongs to the same category, albeit with a slight premium for the product design. The PSSD is available in four capacities - 500GB, 1TB, 2TB, and 4TB. The company sampled the 2TB version to put through our direct-attached storage test suite.
Read on for a comprehensive look at the performance profile and value proposition of the LaCie Rugged Mini SSD, with a particular focus on how Seagate differentiates the product from others using the same NAND / UFD controller combination.
Seagate's IronWolf Pro lineup of hard drives for network-attached storage units has consistently offered good value for money, particularly at the highest capacity points. I purchased two 22TB IronWolf Pro drives for production deployment late last year. As part of the burn-in testing prior to actual deployment, they were put through our evaluation routine for direct-attached storage drives in both internal and external (Thunderbolt 3 DAS) modes. Read on for a look at the performance you can expect from the drive in standalone, RAID 0, and RAID 1 modes.
NAND flash technology has seen rapid advancement in recent years. This has resulted in the capacity limits of SSDs and thumb drives getting pushed up regularly. Companies like Kingston had innovated in the late 2010s to deliver 1TB and 2TB thumb drives. They were overpriced and over-sized for their product class at that time. However, interest in this category has been sparked again by the introduction of high-performance native UFD controllers and the appearance of cost-effective high capacity NAND dies. Silicon Power and Transcend recently released 2TB thumb drives based on the Phison U17 and Silicon Motion SM2320 native UFD controllers respectively. Read on for a comprehensive analysis of the performance profile and value proposition of the Silicon Power MS70 in its 2TB avatar.
When the USB4 specification emerged several years ago, it was quickly positioned as a less expensive alternative to the Thunderbolt 3 technology which ruled the market of high-performance direct-attached storage (DAS) devices and docking stations. Since then, we've seen multiple USB4 docks hit the market, but USB4 DASes and SSDs are still rare. Thankfully, the situation began to change in the recent weeks, as multiple vendors have finally begun releasing their own USB4 SSDs and external drive enclosures.
Adata announced its first SE920 External USB4 SSD back in August 2021, but it only started shipping these drives in October. Adata's SE920 External SSDs offer capacities of 1 TB or 2 TB, along with a sequential read speed rating of up to 3.8 GB/s as well as a sequential write speed of up to 3.7 GB/s when working with a USB4 host. Otherwise, the drive is rated for 3.20 GB/s on Thunderbolt hosts, due to the greater overhead of the Thunderbolt protocol.
One interesting feature of the Adata SE920 External USB4 SSD is that it comes with a 'telescoping' case that allows to activate its internal fan for better heat dissipation. Such design allows to better ensure consistent performance under high loads, which is set to be particularly useful when transferring large volumes of data. Meanwhile, like other modern SSDs, the SE920 uses pseudo-SLC caching, which means that it demonstrates its maximum performance only while there is spare SLC-cache.
Adata's drive looks like a very decent product overall, and it's priced very competitively with other high-performance drives on the market, with Adata charging around $150 for the 1 TB version and $200 for the 2 TB version.
Meanwhile, for the DIY crowd that wants to build their own USB4 SSDs, standalone USB4 enclosures are finally available as well. OWC's Express 1M2 enclosure is based on the ASMedia ASM2464PD USB4/Thunderbolt to NVMe bridge, and is compatible with virtually any NVMe M.2-2280 SSD.
The enclosure supports sequential read/write speeds of up to 3,151 MB/s, as well as capacities up to 8 TB (the largest M.2 2280 drive capacity currently available). Mindful of how warm modern, high-end SSDs can get, the enclosure's case acts like a huge heat sink, helping to keep those increasingly toasty SSDs cool.
On paper, OWC's Express 1M2 DIY enclosure does not reach speeds quite as high as Adata's SE920 SSD, so the extra capacity and ability to throw in any M.2 SSD you have lying around are the main selling points of the device. Pricing, on the other hand is a higher hurdle; OWC is charging $119.99 for the Express 1M2 enclosure on its own, and $219.99 for the enclosure with pre-installed 1 TB SSD.
Although OWC's DIY USB4 SSD enclosure seems a bit overpriced, good news is that the company is not alone selling such devices. Stardom also has its UBOX-B4BP USB4 SSD enclosure that has the same feature set (e.g., compatibility with almost any M.2-2280 SSD and latest PCs), but it is slightly larger and its rated performance figures are up to 2,920 MB/s for writes and up to 3,214 MB/s for reads.
The enclosure allows building external USB4 storage solutions of up to 8 TB (and larger when such drives become available) that can work with both new and old PCs. Interestingly, Stardom has included a second USB-C connector on the enclosure solely for power purposes, allowing it to be used with an external power adapter if a host can't provide enough bus power on its own.
Stardom yet has to start selling its its UBOX-B4BP USB4 SSD enclosure in the U.S. and Europe, but in Taiwan the product costs NT$3,990 ($120 without VAT), which is not exactly cheap.
Micron has been on a roll lately with new product introductions despite the downturn in the flash market. The company is currently the only NAND manufacturer shipping products based on 200+L 3D TLC in volume. Thanks to the advantage of higher bit density and rapid maturity in yields, Micron has better leeway in pricing and margins compared to its peers. As a result, we have had multiple 232L product launches in the enterprise (Micron 6500 ION), OEM (Micron 2550), and consumer (Crucial T700, Crucial T500) segments over the last year. In addition to higher bit density, the 232L 3D TLC NAND also delivers significant bandwidth improvements with its 6-plane architecture.
Micron is launching the 3500 NVMe SSD series today. It is the first PCIe Gen4 x4 232L 3D TLC NAND OEM drive in the market. Micron develops SSD platforms for client systems and markets them under the Crucial brand name for direct purchase by end-users. The company has also been releasing the same platforms under the Micron brand for OEMs and system integrators. Obviously, the validation cycles and OEM qualification requirements dictate a slightly different approach to the firmware compared to what is put into the Crucial drives. As a result, the advertised specifications may differ slightly for the same hardware platform based on the target market. The 3500 NVMe SSD utilizes the same hardware as the recently-released Crucial T500 - Micron's 232L 3D TLC NAND behind the Phison E25 controller operating in 4-channel mode, with the NAND configured for 2400 MT/s and dedicated DRAM on the drive for the flash translation layer (FTL).
Almost all of the key selling points of the Crucial T500 transfer themselves to the Micron 3500 NVMe SSD. These include class-leading bandwidth numbers saturating the Gen4 links and DirectStorage support. The peak reads are at 7 GBps instead of 7.4 GBps, but that is due to the nature of the systems dictated by OEM qualification requirements. Endurance numbers are the same as the T500's, but the warranty period is only 3 years (compared to the T500's 5 years). This actually translates to a higher DWPD rating for the drive, and is a typical demand of the OEMs who qualify these drives for use in their systems. The SSD's power consumption numbers and wake times from sleep are also geared for Intel's Project Athena certification - an aspect that is important for OEMs delivering high-performance notebooks. The target market for the 3500 NVMe SSD is high-end workstations and gaming systems. As a result, Micron's marketing numbers have focused on benchmarks such as SPECwpc storage (part of the SPECworkstation suite). We are looking forward to confirming the claims with our own hands-on evaluation in the near future.
The launch of the Micron 3500 NVMe SSD has enabled the company to cater to the entire range of OEM client systems requiring Gen4 NVMe drives. The entry-level Micron 2400 series with 176L QLC NAND is meant for the cost-sensitive market, while the Micron 2550 moves to 232L 3D TLC with the previous-generation Phison controller. Both drive families are available in multiple M.2 form-factors. The 3500 NVMe SSD fills up the flagship role. With high-end computing systems being the target, the drive will be available only in the M.2 2280 form-factor. It is surprising that a 4TB drive is not available at launch, given that high-end systems are typically hungry for storage capacity. Hopefully, that is a hole in the product stack that Micron will be able to fill in both the Crucial T700 and Micron 3500 NVMe SSD families sometime next year.
Once the domain of external, bus-powered hard drives, these days the market for external storage has been almost completely consumed by portable SSDs. Rapid technological advancements in NAND flash technology (including the advent of 3D NAND) has allowed their capacity to eclipse 2.5-inch HDDs, all the while multiple improvements in host interface speeds (such as the move from USB 2.0 to 3.0, and onwards to 3.2 Gen 2 / Gen 2x2 / USB4) has made portable SSDs faster and more reliable than the hard drives they replace. All of which has helped to make portable SSDs the go-to solution for external storage, both big and small.
For our latest storage buyer's guide, we've rounded up some of the best portable SSDs we've looked at in the past couple of years. What's hot, what's not, and what's a good deal while still offering reasonable performance? We break that down and make our picks for the best portable SSDs on the market today.
Western Digital is announcing today that it has begun volume shipments of its 24 TB hard drives based on conventional magnetic recording (CMR) to its full customer base. In addition, the company started to ramp up production of its 28 TB HDDs featuring shingled magnetic recording (SMR) that will be used by select customers.
The new lineup of 3.5-inch 7200 RPM hard drives includes Western Digital's Ultrastar DC HC580 24 TB and WD Gold 24 TB HDDs, which are based on the company's energy-assisted perpendicular magnetic recording (ePMR) technology. Both of these drives are further enhanced with OptiNAND to improve performance by storing repeatable runout (RRO) metadata on NAND memory (instead of on disks) and improve reliability.
The company is also preparing their Ultrastar DC HC680 SMR 28 TB hard drive, which relies on shingled ePMR and OptiNAND.
When it comes to performance, the new hard drives are a tad faster than predecessors due to higher areal density. Meanwhile, per-TB power efficiency of Western Digital's 24 TB and 28 TB HDDs is around 10% - 12% higher than that of 22 TB and 26 TB drives, respectively, due to higher capacity and more or less the same power consumption. For CSPs and hyperscalers, the main value advantage of the new 24 TB drives is their higher capacity, which enables up to 612 TB of raw storage per rack using 102-bay 4U chassis.
All three models feature 10 platters and largely re-use the company's current enterprise-grade platform for multi-drive environments, which was introduced over a year ago. The platform traditionally features a top and bottom attached motor as well as RV sensors to ensure consistent performance in vibrating multi-HDD chassis. The latest Ultrastar HDDs are generally being aimed at cloud service providers, hyperscalers, and large enterprises, whereas WD Gold are going primarily to VARs, enterprises, enterprise-grade NAS, and small businesses that need to store loads of data.
Western Digital is shipping WD Gold 24 TB hard drives through their distribution channel, so expect them to hit the market shortly. The Ultrastar DC HC680 and HC580 HDDs are now in the qualification phase with select CSPs, hyperscalers, and OEMs. They are also available for enterprises that deploy these devices internally. It looks like WD is just shipping the SATA versions of these drives initially, as the company is separating noting that that the SAS versions of the Ultrastar DC HC680 and HC580 HDD will be available in the first quarter of 2024.
"With these new offerings, Western Digital is once again proving that hard drives are not just keeping pace, they are forging a path forward, ensuring that data-intensive applications of today and tomorrow have a strong foundation to build on while the industry prepares for HAMR," said Ed Burns, research director of HDD and storage technologies at IDC. "We are seeing strong momentum for Western Digital’s SMR HDDs and believe that SMR adoption will continue to grow as their new 28TB SMR HDD offers the next compelling TCO value proposition that cloud customers cannot ignore."
The market for portable SSDs (PSSDs) has seen rapid growth over the past decade. Samsung is one of the active tier-one flash vendors in the space, with their popular T-series PSSDs servicing a range of target markets in terms of performance and price. Today, the company is introducing a new category in PSSDs - high-capacity flash storage limited to entry-level speeds. The company is using QLC flash for this purpose. While this is not the first PSSD in the market to use QLC flash (and it will definitely not be the last), the company is not repeating the mistakes of its predecessors by promising the moon. Instead, the company's first product in this category - the T5 EVO Portable SSD - is limited to USB 3.2 Gen 1 (5 Gbps) speeds. Making up for this entry-level speed specification, Samsung is launching three different capacity points for the T5 EVO PSSD - 2 TB, 4 TB, and 8 TB. Can limiting QLC PSSDs to 5 Gbps deliver a better user experience? Read on for an analysis of the performance and value proposition of the 8 TB variant of the T5 EVO PSSD for direct-attached storage workloads.
The portable SSD market has seen rapid growth over the last decade. Almost all of the tier-one NAND flash manufacturers have jumped in with multiple offerings, presenting consumers with a wide variety of choices for different budgets and performance requirements. Crucial (Micron's consumer-facing brand) alone has introduced three new products in this category this year - the X9 Pro (1 GBps-class TLC), X10 Pro (2 GBps-class TLC), and the X9 (1 GBps-class QLC) PSSDs. Micron provided us with an opportunity to evaluate the X10 Pro across all available capacity points. Read on for a detailed analysis of the performance profile and value proposition of each X10 Pro SKU.
Hidden deep in Seagate's financial report released late last month was a brief roadmap update for the company's heat-assisted magnetic recording (HAMR) technology. As noted in the latest update, Seagate is now planning to begin mass production of its 32 TB HAMR in early 2024, which is a slight delay from what the company announced early this year. Meanwhile, the company expects to start production of 40+ TB HDDs in about two years' time.
"Qualification and revenue ramp plans for our 30-plus terabyte products remain fully on track with high-volume ramp starting early in calendar 2024," said Dave Mosley, chief executive of Seagate, during conference call with financial analysts and investors. " These drives deliver capacity starting at 30 terabytes and offer customers the same flexibility to adopt either CMR or SMR configurations to further boost aerial density into the mid-30TB range."
As noted back in October, Seagate's Exos X24 series of HDDs will help set the stage for HAMR-based hard drives, as the latter will keep using the same 10-platter platform – albeit with new platters as well as write heads with lasers to heat the media surface. Those Exos drives will use 10 2.4 TB perpendicular magnetic recording disks and will begin shipments in the first half of calendar 2024. Around the same time — in early calendar 2024 — Seagate plans to start volume ramp of 32 TB HAMR HDDs.
Even with the volume ramp and enviable capacity, Seagate is only expecting to sell a modest number of HAMR HDDs in the first quarters of their availability. The company believes that it can move around one million units in the first half of 2024, though the firm does not disclose whether the number is limited by its ability to produce the drives, or by demand from customers who need to qualify such products before deploying them in their datacenters.
"We will start our HAMR revenue fairly strongly in the first six months of the calendar 2024," said Gianluca Romano, chief financial officer of Seagate. "We think we have about a million unit as opportunity to be sold."
Another interesting disclosure found in the document is that Seagate intends to start producing HAMR-based HDDs featuring 4+TB platters within the next two years, which would have them arriving sometime in late 2025 or early 2026. This is somewhat is behind the company's optimistic schedule revealed a few years back, which anticipated 50+TB HDDs in calendar 2026. Though it's arguably a more realistic schedule that's in line with the development cadence thus far, especially given how development and deployment of hard drive proceeds these days.
Another noteworthy thing is that Seagate's brief roadmap update does not mention HDDs with more than 10 platters. Meaning that the company seems to be done adding platters to gain additional capacity, at least for now. Perhaps, the company believes that increased areal density that is enabled by HAMR will enable it to offer competitive capacities and it does not need to throw in any additional disks. Or maybe installing over 10 HAMR platters is risky from yields point of view as of now, so the company prefers not to mention such a technological option.
Source: Seagate (via StorageNewsletter)
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