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 Cisco UCS Server (Cisco UCS Tray Included)

Cisco UCS Compatible (Cisco UCS Drive Tray Included)

The Western Digital Ultrastar DC SN640 WUS4BB038D7P3E3 is a high-performance enterprise NVMe SSD engineered for cloud computing, virtualization, software-defined storage, content delivery networks, and modern data center deployments.

Featuring 3.84TB of enterprise storage capacity, the Ultrastar DC SN640 delivers exceptional reliability, ultra-low latency, and consistent performance for read-intensive workloads. Built with advanced 96-Layer BiCS4 3D TLC NAND Flash, this U.2 SSD utilizes a PCIe Gen 3.1 x4 NVMe 1.3 interface to provide the speed and responsiveness required for mission-critical server applications.

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 virtualized environments, cloud infrastructure, enterprise databases, and high-density storage platforms.

Designed for enterprise reliability, the drive includes advanced features such as Power Loss Protection (PLP), End-to-End Data Path Protection, Hot-Swap Support, and Instant Secure Erase (ISE). With a 2 million hour MTBF, 0.8 DWPD endurance rating, and 5,744 TBW, this SSD is built to deliver dependable long-term performance.

This drive includes a Cisco UCS Small Form Factor (SFF) Drive Tray, making it ready for installation in compatible Cisco UCS servers with U.2 NVMe drive support.

Compatible Cisco UCS Servers

• Cisco UCS C220 M5
• Cisco UCS C220 M6
• Cisco UCS C220 M7
• Cisco UCS C240 M5
• Cisco UCS C240 M6
• Cisco UCS C240 M7
• Cisco UCS S3260 Storage Server
• Cisco UCS X-Series Compute Nodes with NVMe storage support
• Cisco HyperFlex HX220 Series
• Cisco HyperFlex HX240 Series

Important Compatibility Notes

• Includes Cisco UCS Drive Tray
• Requires U.2 NVMe-compatible drive bays
• Requires NVMe-enabled backplane or controller
• Compatible with supported Cisco UCS servers
• Hot-swappable in supported configurations
• Not compatible with SATA-only drive bays
• Not compatible with SAS-only backplanes
• Compatibility depends on server configuration and firmware requirements

• 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
• Cisco UCS 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 Type: 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 Bandwidth: 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 Cisco UCS Drive Tray

• Cloud Computing
• Virtualization Infrastructure
• Enterprise Data Centers
• Hyper-Converged Infrastructure (HCI)
• Software Defined Storage
• Content Delivery Networks (CDN)
• Enterprise Databases
• High-Density Storage Arrays
• Server Boot Volumes
• Web Hosting Platforms

Please verify compatibility with your Cisco UCS server and NVMe storage configuration before purchasing.