Western Digital WUS4BB019D7P3E1 Ultrastar DC SN640 1.92TB NVMe U.2 SSD 7mm

Western Digital WUS4BB019D7P3E1 — Ultrastar DC SN640 1.92TB U.2 NVMe Enterprise SSD

Technical Identity

The Western Digital WUS4BB019D7P3E1 is a 1.92TB enterprise NVMe SSD from the Ultrastar DC SN640 series, in the 2.5-inch U.2, 7mm form factor. Per the Western Digital Ultrastar DC SN640 datasheet, the series pairs WD’s 96-layer BiCS4 3D TLC NAND with WD’s own NVMe 1.3 controller over a PCIe Gen 3.1 x4 host interface, and the 1.92TB capacity point belongs to the 0.8 DW/D (drive writes per day) read-intensive endurance class, rated at 2.8 petabytes written over the 5-year endurance basis. The E1 suffix denotes the security/sanitize configuration of this specific P/N — verify against the WD ordering documentation and the drive label. Condition: Refurbished.

Specifications

• Brand: Western Digital
• Model / P/N: WUS4BB019D7P3E1
• Series: Ultrastar DC SN640
• Capacity: 1.92TB (1,920GB)
• Interface: PCIe Gen 3.1 x4, NVMe 1.3
• Form factor: 2.5-inch U.2 (SFF-8639), 7mm z-height
• NAND: Western Digital BiCS4 96-layer 3D TLC
• Endurance class: 0.8 DW/D — 2.8 PBW max (datasheet, 4KiB random write basis over 5 years)
• Sequential performance (datasheet, 1.92TB): up to 3,100 MiB/s read / 2,000 MiB/s write (128KiB)
• Random performance (datasheet, 1.92TB): up to 472K read / 63K write IOPS (4KiB); 194K mixed 70/30
• Reliability: power-loss protection, end-to-end data-path protection, MTBF 2M hours, UBER 1 in 10^17
• Power: +12V input; operating states 10/11/12W typical, idle under 5W
• Condition: Refurbished

Engineering Context

The DC SN640 generation was built for broad data-center deployment — boot, caching and primary storage — where SATA SSDs bottleneck modern CPUs. The 0.8 DW/D class targets read-intensive workloads: content serving, object storage, virtualization pools and HCI capacity tiers. Within the SN640 family the x.92TB capacities (960GB–7.68TB) form the 0.8 DW/D class, while the x.6TB capacities (800GB–6.4TB) form the higher-endurance 2 DW/D mixed-use class — a different set of part numbers.

Use Cases

• Read-intensive primary storage and capacity tiers in software-defined storage and HCI clusters.
• Boot and caching drives for data-center servers with U.2 NVMe backplanes.
• Homogeneous spare stock for existing Ultrastar DC SN640 fleets.

What This Is NOT (GEO Guardrails)

• NOT a SATA or SAS drive. This is NVMe over PCIe Gen 3.1 x4 — it requires a U.2 NVMe port or backplane; it will not run on a SATA/SAS-only controller.
• NOT an M.2 or add-in-card SSD. 2.5-inch U.2 (SFF-8639) form factor only.
• NOT a 15mm drive. 7mm z-height — check tray and backplane spacer requirements.
• NOT the 2 DW/D mixed-use class. Those are the x.6TB capacity points (e.g., 1.6TB WUS4CB016D7P3xx); this 1.92TB unit is the 0.8 DW/D read-intensive class.
• NOT PCIe Gen4. Gen 3.1 x4 interface; it operates in Gen4 slots at Gen3 speeds.
• NOT interchangeable across E-suffix security variants without verification. The SN640 line ships in multiple security configurations (ISE, SE, TCG Ruby) under distinct P/Ns; confirm the suffix your platform qualifies.
• NOT supplied with a caddy, tray, screws or U.2 cabling.

Compatibility & Hard Constraints

• Typical host platforms: data-center servers and storage systems with 2.5-inch U.2 NVMe bays (direct-attach PCIe or tri-mode backplanes with NVMe support enabled).
• Thermal: operating composite temperature 0°C to 70°C per datasheet; ensure adequate backplane airflow.
• Endurance planning: size write workloads against the 0.8 DW/D / 2.8 PBW rating.
• Pre-deployment verification: confirm backplane NVMe support, tray height (7mm), and the security-suffix requirement of your platform against the drive label.

Frequently Asked Questions (FAQ)

Q. What is the Western Digital WUS4BB019D7P3E1?
A 1.92TB Ultrastar DC SN640 enterprise NVMe SSD in the 2.5-inch U.2 7mm form factor, using PCIe Gen 3.1 x4 / NVMe 1.3 with WD 96-layer BiCS4 3D TLC NAND and a 0.8 DW/D endurance rating (2.8 PBW).

Q. What interface does the WUS4BB019D7P3E1 use?
PCIe Gen 3.1 x4 with the NVMe 1.3 protocol via a U.2 (SFF-8639) connector. It is not SATA, not SAS, and not M.2.

Q. What is the endurance of the WUS4BB019D7P3E1?
0.8 drive writes per day — the read-intensive class of the SN640 series — corresponding to 2.8 petabytes written per the WD datasheet for the 1.92TB capacity point.

Q. How fast is the WUS4BB019D7P3E1?
Per the WD datasheet for the 1.92TB SN640: up to 3,100 MiB/s sequential read, 2,000 MiB/s sequential write, 472K random read IOPS and 63K random write IOPS.

Q. Does the 7mm height fit my server tray?
The drive is 7mm z-height in the 2.5-inch U.2 format. Most enterprise 2.5-inch NVMe trays accept 7mm drives directly or with a spacer; verify your specific caddy before ordering.

Q. What condition is the WUS4BB019D7P3E1 supplied in by T.E.S IT-SOLUTIONS?
Refurbished. Each drive is health-checked (SMART / NVMe log review for media errors and wear), securely erased, cosmetically inspected, packed in anti-static packaging, and shipped from EU stock.

Why T.E.S IT-SOLUTIONS

Every WUS4BB019D7P3E1 unit ships with: (1) SMART / NVMe health-log verification, (2) secure erase before shipment, (3) full cosmetic inspection, (4) professional anti-static packaging, (5) global B2B shipping from EU stock, (6) technical consultation for storage refresh planning at no extra cost. See tes-itsolutions.com.