Western Digital (WD / HGST) 3.84TB NVMe U.2 PCIe Gen3 x4 RI SFF 2.5" SSD Ultrastar DC SN640 WUS4BB038D7P3E3
Supermicro Compatible (Supermicro Tray Included)
The Western Digital Ultrastar DC SN640 WUS4BB038D7P3E3 is a high-performance enterprise NVMe SSD designed for cloud computing, virtualization, software-defined storage, enterprise databases, content delivery networks, and modern data center workloads.
Featuring 3.84TB of enterprise storage capacity, the Ultrastar DC SN640 delivers exceptional reliability, endurance, and low-latency performance for read-intensive applications. Built with advanced 96-Layer BiCS4 3D TLC NAND Flash and utilizing a PCIe Gen 3.1 x4 NVMe 1.3 interface, this SSD provides enterprise-class performance and consistent throughput for mission-critical operations.
With sequential read speeds of up to 3,100 MB/s, sequential write speeds of up to 1,800 MB/s, and up to 434,000 random read IOPS, the SN640 is optimized for virtualization, cloud infrastructure, web hosting, and high-density storage environments.
Advanced enterprise features include Power Loss Protection (PLP), End-to-End Data Path Protection, Hot-Swap Support, and Instant Secure Erase (ISE). With 0.8 DWPD endurance, 5,744 TBW, and a 2 million hour MTBF, this SSD is engineered for dependable long-term operation.
Supermicro Tray Compatibility
This drive includes a Supermicro 2.5-inch U.2 NVMe Drive Tray, making it ready for installation in compatible Supermicro servers with NVMe-enabled drive bays.
Compatible Supermicro Platforms
- Supermicro SYS-120U-TNR
- Supermicro SYS-220U-TNR
- Supermicro SYS-620U-TNR
- Supermicro SYS-220BT-HNTR
- Supermicro SYS-620BT-DNCSTR
- Supermicro SYS-110C-FNR
- Supermicro SYS-220C-TNRT
- Supermicro Ultra Series Servers
- Supermicro Hyper Series Servers
- Supermicro GrandTwin Servers with U.2 NVMe Support
- Supermicro NVMe Storage Platforms
Important Compatibility Notes
- Includes Supermicro U.2 NVMe Drive Tray
- Requires a U.2 NVMe-compatible backplane or controller
- Compatible with Supermicro NVMe-enabled drive bays
- Hot-swappable in supported configurations
- Not compatible with SATA-only backplanes
- Not compatible with SAS-only backplanes
- Compatibility depends on server backplane, controller, and drive bay configuration
Key Features
- 3.84TB Enterprise NVMe SSD
- Ultrastar DC SN640 Series
- PCIe Gen 3.1 x4 Interface
- NVMe 1.3 Protocol
- 2.5" U.2 (SFF-8639) Form Factor
- Read Intensive (RI) Workload Optimized
- WD BiCS4 96-Layer 3D TLC NAND
- Up to 3,100 MB/s Sequential Read
- Up to 1,800 MB/s Sequential Write
- Up to 434,000 Random Read IOPS
- Power Loss Protection (PLP)
- End-to-End Data Protection
- Instant Secure Erase (ISE)
- Hot Plug / Hot Swap Support
- Enterprise-Class Reliability
- Supermicro Drive Tray Included
Technical Specifications
- Manufacturer: Western Digital (WD) / HGST
- Series: Ultrastar DC SN640
- Model: WUS4BB038D7P3E3
- Product Type: Enterprise Read Intensive NVMe SSD
- Capacity: 3.84TB
- Form Factor: 2.5" U.2 (SFF-8639)
- Drive Height: 7mm
- Interface: PCIe Gen 3.1 x4
- Protocol: NVMe 1.3
- NAND Flash: BiCS4 96-Layer 3D TLC NAND
- Workload Class: Read Intensive (RI)
- Security Type: Instant Secure Erase (ISE)
- Hot Swappable: Yes
Performance
- Sequential Read Speed: Up to 3,100 MB/s
- Sequential Write Speed: Up to 1,800 MB/s
- Random Read (4K): Up to 434,000 IOPS
- Random Write (4K): Up to 65,000 IOPS
- Mixed Random Workload (70/30): Up to 157,000 IOPS
- Interface Transfer Rate: Up to 4 GB/s
Reliability & Endurance
- Endurance Rating: 0.8 DWPD
- Total Bytes Written (TBW): 5,744 TB
- MTBF: 2 Million Hours
- Power Loss Protection (PLP)
- End-to-End Data Path Protection
- Hot Plug / Hot Swap Support
- Instant Secure Erase (ISE)
Package Includes
- 1x Western Digital Ultrastar DC SN640 3.84TB NVMe SSD
- Model: WUS4BB038D7P3E3
- 1x Supermicro U.2 NVMe Drive Tray
Ideal Applications
- Cloud Computing
- Virtualization Infrastructure
- Enterprise Data Centers
- Software Defined Storage
- Content Delivery Networks (CDN)
- Read-Intensive Databases
- Hyper-Converged Infrastructure (HCI)
- Server Boot Volumes
- High-Density Storage Arrays
- Web Hosting Platforms
Please verify compatibility with your specific Supermicro server, NVMe backplane, and storage configuration before purchasing.
