Western Digital (WD / HGST) 3.84TB NVMe U.2 PCIe Gen3 x4 RI SFF 2.5" SSD Ultrastar DC SN640 WUS4BB038D7P3E3

Dell PowerEdge 15th Generation Compatible (Dell PowerEdge Gen15 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, and modern data center workloads.

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

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 long-term operation in demanding data center environments.

This drive includes a Dell PowerEdge 15th Generation 2.5-inch NVMe Drive Tray, making it ready for installation in compatible Dell PowerEdge servers with NVMe-enabled drive bays.

Compatible Dell PowerEdge 15G Servers

• Dell PowerEdge R650
• Dell PowerEdge R6515
• Dell PowerEdge R750
• Dell PowerEdge R750xa
• Dell PowerEdge R7515
• Dell PowerEdge R7525
• Dell PowerEdge MX750c
• Dell PowerEdge C6525
• Dell PowerEdge XE8545

Important Compatibility Notes

• Includes Dell PowerEdge 15th Generation Drive Tray
• Requires a U.2 NVMe-enabled backplane or controller
• Compatible with Dell NVMe drive bays
• Hot-swappable in supported server configurations
• Not compatible with SATA-only backplanes
• Not compatible with SAS-only backplanes
• Server compatibility depends on 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
• Dell PowerEdge Gen15 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 Dell PowerEdge 15th Generation NVMe Drive Tray

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

Please verify compatibility with your Dell PowerEdge server, NVMe backplane, and storage configuration before purchasing.