Western Digital has announced its new family of enterprise SSDs aimed at mixed-use-case workloads. The new drives use in-house developed components and come in EDSFF E1.L, U.2, and M.2-22110 form-factors offering capacities of up to 30.72 TB.
Based on controllers developed by Western Digital internally as well as 96-layer BICS4 3D TLC NAND, the Ultrastar DC SN640 SSDs are aimed at performance-demanding business-critical mixed-workload applications, including SQL Server, MySQL, VMware vSAN, Microsoft Azure Stack HCI solutions, virtual desktops, and other. Plus, the drives support power loss protection, AES-256 data encryption, Instant Secure Erase, signed firmware downloads, and other technologies.
Depending on target applications, Western Digital will offer its Ultrastar DC SN640 in three form-factors. For those who need maximum performance and capacity, the manufacturer will offer SSDs in EDSFF E1.L form-factor that will offer capacities of up to 30.72 TB as well as up to 720K random read IOPS. For blade servers running virtual desktops and similar software the maker will offer U.2 SSDs featuring up to 7.68 TB capacities. For space-constrained and OCP environments, the Ultrastar DC SN640 drives will be available in M.2-22110 form-factor as well as capacities of up to 3.84 TB. Considering the workloads, the new SSDs offer tune-able endurance of 0.8 or 2 DWPD over five years.
| Western Digital’s Ultrastar DC SN640 SSDs | ||||||
| 2.5-Inch U2 |
M.2-22110 | EDSFF E1.L | ||||
| Capacities | 0.8 DWPD | 800 GB 1,600 GB 3,200 GB 6,400 GB |
960 GB 1,600 GB 3,840 GB |
7.68 TB 15.36 TB 30.72 TB |
||
| 2 DWPD | 960 GB 1,920 GB 3,840 GB 7,680 GB |
– | – | |||
| Interface | PCIe 3.0 x4 (NVMe) | |||||
| Controller | Proprietary | |||||
| NAND | 96-layer BICS4 3D TLC NAND | |||||
| Sequential Read | up to 3200 MB/s | |||||
| Sequential Write | up to 2140 MB/s | |||||
| Random Read (4 KB) IOPS | up to 480K IOPS | |||||
| Random Write (4 KB) IOPS | up to 120K IOPS | |||||
| Mixed Random Read/Write (max IOPS 70%R/30%W, 4KB) |
up to 240K IOPS | |||||
| Power | Active | 12 W | 8.25 W | 20 W | ||
| Encryption | AES-256 | |||||
| Power Loss Protection | Yes | |||||
| MTBF | 2 million hours | |||||
| Warranty | Five years | |||||
| Note: | Performance numbers are based on 6.4 TB U.2 SSD | |||||
Samples of Western Digital’s Ultrastar DC SN640 SSDs are now available to the company’s customers and will ship commercially later.
