Western Digital (WD / HGST) 3.84TB NVMe U.2 PCIe Gen 3.0 x4 RI SFF 2.5" SSD Ultrastar DC SN640 Series WUS4BB038D7P3E3 for Lenovo ThinkSystem Server (Lenovo ThinkSystem Tray Included)

Lenovo ThinkSystem Compatible (Lenovo ThinkSystem Tray Included)

The Western Digital Ultrastar DC SN640 WUS4BB038D7P3E3 is a high-performance enterprise NVMe solid state drive designed for cloud computing, virtualization, software-defined storage, enterprise databases, content delivery networks, and modern data center environments.

Featuring 3.84TB of enterprise storage capacity, the Ultrastar DC SN640 combines exceptional speed, reliability, and endurance in a compact 2.5-inch U.2 form factor. Built with advanced 96-Layer BiCS4 3D TLC NAND Flash and utilizing a PCIe Gen 3.1 x4 NVMe 1.3 interface, this SSD delivers low-latency performance and consistent throughput for mission-critical workloads.

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 read-intensive applications requiring dependable enterprise-class performance.

Advanced enterprise features include Power Loss Protection (PLP), End-to-End Data Path Protection, Hot-Swap Support, and Instant Secure Erase (ISE). With an endurance rating of 0.8 DWPD, 5,744 TBW, and a 2 million hour MTBF, this SSD is engineered for long-term reliability in demanding enterprise environments.

This drive includes a Lenovo ThinkSystem 2.5-inch U.2 NVMe Drive Tray, making it ready for installation in compatible Lenovo ThinkSystem servers with NVMe-enabled drive bays.

Compatible Lenovo ThinkSystem Servers

• Lenovo ThinkSystem SR630
• Lenovo ThinkSystem SR630 V2
• Lenovo ThinkSystem SR630 V3
• Lenovo ThinkSystem SR650
• Lenovo ThinkSystem SR650 V2
• Lenovo ThinkSystem SR650 V3
• Lenovo ThinkSystem SR655
• Lenovo ThinkSystem SR665
• Lenovo ThinkSystem SD530
• Lenovo ThinkSystem SD630 V2
• Lenovo ThinkSystem SD650 V2
• Lenovo ThinkSystem ST650 V2

Important Compatibility Notes

• Includes Lenovo ThinkSystem NVMe Drive Tray
• Requires a U.2 NVMe-compatible backplane or controller
• Compatible with Lenovo ThinkSystem NVMe drive bays
• Hot-swappable in supported server 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
• Lenovo ThinkSystem 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: 96-Layer BiCS4 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 Lenovo ThinkSystem 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 Lenovo ThinkSystem server, NVMe backplane, and storage configuration before purchasing.