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.

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

• 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

• 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

• 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

• 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)

• 1x Western Digital Ultrastar DC SN640 3.84TB NVMe SSD
• Model: WUS4BB038D7P3E3
• 1x Supermicro U.2 NVMe Drive Tray

• 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.