WD Ultrastar DC SN640 960 GB Solid State Drive - 2.5" Internal - PCI Express NVMe (PCI Express NVMe 3.1 x4):
In the dynamic data center environment, IT organizations must optimize their infrastructure to meet new workload demands, improve application responsiveness, ensure uptime and availability, and lower their total cost of ownership.
Cloud architecture has driven new on-premise data center designs able to use converged, hyper-converged, and composable infrastructure with more powerful CPUs, making traditional SATA-based storage inefficient.
NVMe-based SSDs, on the other hand, are specifically designed to maximize the performance of flash memory, and they are widely deployed in cloud computing applications because they offer flexibility and scalability at a lower cost.
Ultrastar DC SN640 NVMe SSD offers improved performance over the current generation DC SN630 SSD and a range of capacities including 960GB, 1.92TB, 3.84TB, and 7.68TB (Gen3.1 x 4).
DC SN640 is an NVMe SSD optimized for cloud/hyperscale and on-premises deployments. A 5-year limited warranty, power-loss protection, and end-to-end data path protection are a few of the enterprise reliability features provided by the SN640.
A DC SN640 is available in two endurance classes: 0.8 DW/D and 2.2 DW/D, both for a five-year period.
The 0.80 DW/D swim lane is designed for read intensive applications while the 2 DW/D swim lane can be deployed in mixed-use workloads requiring higher performance and endurance levels over the life of the drive providing IT organizations a way to optimize for application performance.
A greater level of security is required for data at rest due to regulatory and privacy demands.
Instant Secure Erase (ISE) features on the Ultrastar DC SN640 help safeguard data with AES-256 encryption and provide instant data deletion upon decommissioning or recommissioning the drive.
Through RSA-protected firmware downloads, Western Digital ensures that only the genuine firmware will run on the drive.
| Solid-state drive capacity | 960 GB |
| Read speed | 3000 MB/s |
| Write speed | 1100 MB/s |
| NVM Express (NVMe) supported | |
| NVM Express (NVMe) version | 1.3 |
| Memory type | 3D TLC |
| Latency (read) | 210 µs |
| Random read (4KB) | 413000 IOPS |
| Random write (4KB) | 44000 IOPS |
| Security algorithms | 256-bit AES |
| Hardware encryption | |
| Component for | Server/Workstation |
| Uncorrectable Bit Error Rate (UBER) | <1 sector per 10^17 bits read |
| Mean time between failures (MTBF) | 2000000 h |
| SSD form factor | 2.5" |
| Operating voltage | 12 V |
| Power consumption (average) | 12 W |
| Power consumption (idle) | 5 W |
| Interface | PCI Express 3.1 |
| Operating temperature (T-T) | 0 - 78 °C |
| Storage temperature (T-T) | -40 - 85 °C |
| Width | 69.85 mm (2.72 ") |
| Depth | 100.45 mm (3.92 ") |
| Height | 7 mm (0.27 ") |
| Weight | 95 g (0.21 lbs) |
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