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Western Digital (WD) / HGST 3.84TB NVMe U.2 PCIe Gen 3.0 x4 SFF 2.5" SSD Ultrastar DC SN640 Series WUS4BB038D7P3E3

Western Digital (WD) / HGST 3.84TB NVMe U.2 PCIe Gen 3.0 x4 SFF 2.5" SSD Ultrastar DC SN640 Series WUS4BB038D7P3E3

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

The Western Digital Ultrastar DC SN640 WUS4BB038D7P3E3 is a high-performance enterprise-class NVMe solid state drive designed for read-intensive cloud computing, virtualization, web hosting, content delivery, scale-out storage, and modern data center environments. Combining enterprise reliability with low-latency NVMe performance, the Ultrastar DC SN640 Series delivers consistent operation for mission-critical workloads.

Built with Western Digital BiCS4 96-Layer 3D TLC NAND Flash, this 3.84TB U.2 NVMe SSD utilizes a PCIe Gen 3.1 x4 NVMe 1.3 interface and delivers up to 3,100 MB/s sequential read speeds, up to 1,800 MB/s sequential write speeds, and up to 434,000 random read IOPS. Optimized for read-intensive (RI) workloads, the drive offers a balance of performance, endurance, and enterprise-grade data protection features.

The WUS4BB038D7P3E3 includes advanced enterprise technologies such as Power Loss Protection (PLP), End-to-End Data Path Protection, Hot-Swap Support, and Instant Secure Erase (ISE) for fast and secure drive retirement. With an endurance rating of 0.8 DWPD, 5,744.64 TBW, and a 2 million hour MTBF, this SSD is engineered for dependable long-term operation in enterprise environments.

Product Specifications

  • Manufacturer: Western Digital (WD) / HGST
  • Series: Ultrastar DC SN640
  • Model Number: WUS4BB038D7P3E3
  • Product Type: Enterprise Read Intensive NVMe SSD
  • Capacity: 3.84TB (3,840GB)
  • Form Factor: 2.5-inch U.2 (SFF-8639)
  • Drive Height: 7mm
  • Interface: PCIe Gen 3.1 x4
  • Protocol: NVMe 1.3
  • NAND Flash: WD BiCS4 96-Layer 3D TLC NAND
  • Workload Class: Read Intensive (RI)
  • Security Type: ISE (Instant Secure Erase)
  • Hot Swappable: Yes

Performance

  • Sequential Read Speed: Up to 3,100 MB/s
  • Sequential Write Speed: Up to 1,800 MB/s
  • Maximum Random Read (4K): Up to 434,000 IOPS
  • Maximum Random Write (4K): Up to 65,000 IOPS
  • Mixed Random Workload (70/30): Up to 157,000 IOPS
  • Interface Transfer Rate: 4 GB/s
  • Ultra-Low Latency Enterprise Performance

Reliability & Endurance

  • Endurance Rating: 0.8 DWPD (Drive Writes Per Day)
  • Total Bytes Written (TBW): 5,744.64 TB
  • MTBF: 2 Million Hours
  • Enterprise Data Center Reliability
  • Power Loss Protection (PLP)
  • End-to-End Data Path Protection
  • Hot Plug / Hot Swap Support
  • Instant Secure Erase (ISE)

Security Information

  • This model is an ISE (Instant Secure Erase) drive.
  • Not a Self-Encrypting Drive (SED).
  • Does not support TCG Ruby authentication management.
  • Provides instant cryptographic erase for secure drive retirement.
  • SED versions are identified by model numbers ending in E4.

Compatible Dell PowerEdge Servers

  • PowerEdge R640
  • PowerEdge R650
  • PowerEdge R6515
  • PowerEdge R660
  • PowerEdge R740xd
  • PowerEdge R750
  • PowerEdge R7515
  • PowerEdge R7525
  • PowerEdge R760
  • PowerEdge R7625
  • PowerEdge MX740c
  • PowerEdge MX750c
  • PowerEdge C6420
  • PowerEdge C6520

Compatible HPE ProLiant Servers

  • ProLiant DL360 Gen10
  • ProLiant DL380 Gen10
  • ProLiant DL325 Gen10 Plus
  • ProLiant DL385 Gen10 Plus
  • ProLiant DL360 Gen11
  • ProLiant DL380 Gen11
  • ProLiant DL560 Gen11

Compatible Lenovo ThinkSystem Servers

  • ThinkSystem SR630 V2 / V3
  • ThinkSystem SR650 V2 / V3
  • ThinkSystem SR655
  • ThinkSystem SR665
  • ThinkSystem SD630 V2
  • ThinkSystem SD650 V2

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

Compatible Supermicro Platforms

  • SYS-120U-TNR
  • SYS-220U-TNR
  • SYS-620U-TNR
  • SYS-220BT-HNTR
  • SYS-620BT-DNCSTR
  • SYS-110C-FNR
  • SYS-220C-TNRT

Compatibility Requirements

  • Requires a native U.2 NVMe backplane or U.2 NVMe host adapter.
  • Compatible with NVMe-enabled servers using SlimSAS or OCuLink connectivity.
  • Not compatible with SATA-only backplanes.
  • Not compatible with SAS-only backplanes.
  • Can be used in workstations and desktop systems with PCIe-to-U.2 or M.2-to-U.2 adapters.
  • May require manufacturer-specific drive trays or caddies.

OEM Part Numbers

  • Western Digital: WUS4BB038D7P3E3
  • Dell EMC OEM Equivalents: 0TS1929, 0TS2348, 0TS2088
  • Supermicro Equivalent: HDS-WUV1-0TS1929

Ideal Applications

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