Western Digital’s Red collection of drives for network-attached storage programs has a big share in varied NAS market segments. The collection began off with a give attention to arduous drives, and extra not too long ago WD Red SSDs had been launched in This autumn 2019, a couple of years after the SanDisk acquisition. These SATA SSDs (in each 2.5″ and M.2 form-factors) had been primarily based on Marvell 88SS1074 controllers and focused caching purposes.
The growing reputation of tiered storage, coupled with the deployment of NVMe (within the type of add-in playing cards, and now, natively in NAS boards) has prompted Western Digital to create a brand new member within the WD Red household. The new WD Red SN700 is available in 5 capacities starting from 250GB to 4TB.
| WD Red SN700 NVMe SSDs for NAS | ||||||
| Capacity | 250 GB | 500 GB | 1 TB | 2 TB | four TB | |
| Model Number | WDS250G1R0C | WDS500G1R0C | WDS100T1R0C | WDS200T1R0C | WDS400T1R0C | |
| Controller | SanDisk In-House? | |||||
| NAND Flash | 3D TLC NAND | |||||
| Form-Factor Interface |
M.2-2280, PCIe 3.Zero x4, NVMe 1.3 | |||||
| Single-Sided (22.15mm x 80.15mm x 2.38mm) |
Double-Sided (22.15mm x 80.15mm x 3.58mm) |
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| Seq. Read Max (128KB @ QD32) |
3100 MBps | 3430 MBps | 3400 MBps | |||
| Seq. Write Max (128KB @ QD32) |
1600 MBps | 2600 MBps | 3000 MBps | 2900 MBps | 3100 MBps | |
| Rand. Read IOPS (4KB @ QD32) |
220Ok | 420Ok | 515Ok | 480Ok | 550Ok | |
| Rand. Write IOPS (4KB @ QD32) |
180Ok | 380Ok | 560Ok | 540Ok | 520Ok | |
| SLC Caching | Yes | |||||
| DRAM Buffer | ? | ? | ? | ? | ? | |
| Opal Encryption | ? | |||||
| Power | Peak | 9.24 W | ||||
| PS3 (LP) | 70 mW | 100 mW | ||||
| PS4 (Sleep) | 3.5 mW | 5 mW | ||||
| Warranty | 5 years | |||||
| MTBF | 1.75 million hours | |||||
| TBW | 500 | 1000 | 2000 | 2500 | 5100 | |
| DWPD | 1 | 0.7 | ||||
| Addl. Info. | Link | |||||
| MSRP | $65 | $80 | $145 | $290 | $650 | |
A PCIe 3.Zero x4 NVMe drive can present a quantum leap in I/O efficiency, particularly over pure HDD-based programs. NAS items are quick changing into hyperconverged utility servers, and NVMe drives can enhance consumer expertise with each storage duties in addition to utility duties. In specific, duties associated to workloads like virtualization, multi-user collaborative modifying and different comparable purposes. The advantages for conventional enterprise workloads reminiscent of intensive databases are additionally evident, even when the NVMe drive is used purely as a caching drive. Interestingly, the 1TB and decrease capability fashions have a 1 DWPD ranking, whereas the 2TB and 4TB ones have a 0.7 DWPD endurance quantity.
It should be famous that Seagate has already launched two generations of NVMe drives for the NAS market of their IronWolf collection. WD is enjoying a little bit of a catch-up on this specific market phase, however its SanDisk heritage and vertical integration can presumably give the WD Red SN700 an edge over the IronWolf collection.
