2.0TB Western Digital UltraStar DC SN640
NVMe SSD for PC
Mfr P/N: 0TS1928 OWC SKU: WDG0TS1928
Highlights
- Western Digital NVMe 1.3c compliant controller; 4x PCIe Gen3.1x4
- Western Digital BiCS4 96L 3D TLC NAND
- MTBF rating of 2 million hours
- Data-loss protection
- Instant Secure Erase (ISE)
- Western Digital 3 Year Limited Warranty
Mainstream NVMe™ SSD for Data Center IT and Cloud Deployment
The UltraStar DC SN640 NVMe SSD is a mainstream NVMe™ SSD targeting broad deployment as boot, caching, or primary storage in data center IT and cloud environments. The DC SN640 is optimized to deliver the highest performance and consistent QoS read latency when running random mixed workloads typically generated by enterprise applications such as virtualization, OLTP, NoSQL, web servers, file servers, and mail servers.
The DC SN640 NVMe SSD is ideal for replacing SATA SSDs by delivering 6x improvement in sequential read performance and 3x improvement random mixed read/write performance. The DC SN640 boosts data center performance and responsiveness as direct attached, distributed storage or in large scale cloud deployments.
The DC SN640 includes Western Digital's 96-Layer BiCS4 3D TLC NAND and Western Digital's NVMe 1.3c controller and incorporates enterprise reliability features, such as power-loss protection, and end-to-end data path protection.
Designed for Workload Flexibility
The UltraStar DC SN640 is available in two endurance classes: 0.8DW/D (capacities from 960GB-7.68TB) and 2 DW/D (capacities 800GB-6.4TB).
Safeguarding Data
The UltraStar DC SN640 includes power loss protection to ensure that data is not lost during unexpected power interruption. It is available with Secure Erase (SE), Instant Secure Erase (ISE), or TCG Ruby security options. SE and ISE provide entire drive erase options upon decommissioning. The SC SN640 is available as a self-encrypting drive with TCG Ruby to provide protection for data in storage and to help meet compliance criteria.
Better with NVMe
Now is the right time to upgrade from SATA SSDs to NVMe performance in cloud/hyperscale and on-prem data centers. The UltraStar SC SN640 NVMe SSD will help enable lower TCO compared to SATA SSDs, while providing low-latency and performance for current demanding workloads and future requirements.
Includes
- (1) Western Digital Ultrastar DC SN640 NVMe SSD
- Western Digital 3 Year Limited Warranty
Specs
Capacity
- 1.9 TB
Formatted Capacity
- 1788GiB
NAND Flash Components
- Western Digital Triple-Level Cell (TLC) 3D NAND Flash
Form Factor
- 2.5-inch U.2 (SFF-8639)
Drive Interface
- PCIe 3.1 x4
Random 4K Read
- Up to 472,000 IOPS
Random 4K Write
- Up to 63,000 IOPS
Sequential Read (Max)
- Up to 3330 MB/s
Sequential Write (Max)
- Up to 2170 MB/s
MTBF (Mean Time Between Failures)
- 2,000,000 hours
Security
- Instant Secure Erase (ISE)
Endurance
- 2800TB total bytes written (TBW), equal to 1096 GB per day for 7 years
PC OS Compatibility
- Yes
Idle Mode (Max)
- Up to 5 Watts
Dimensions
- Height: 0.7 cm (0.3 in)
- Length: 10.0 cm (3.9 in)
- Width: 7.0 cm (2.7 in)
Weight
- 95.0 g (0.21 lbs)
Ambient Temperature
- Operating: 32°F to 158°F (0°C to 70°C)
- Non-Operating: -40°F to 185°F (-40°C to 85°C)
Compatibility & Installation Videos
PC Compatible

PC Compatible