Mainstream NVMe™ SSD for Data Center IT and

Cloud Deployment

The Ultrastar DC SN640 NVMe SSD is a mainstream NVMe™ SSD targeting broad

deployment as boot, caching, or primary storage in data center IT and cloud

environments. The DC SN640 is optimized to deliver the highest performance and

consistent QoS read latency when running random mixed workloads typically

generated by enterprise applications such as virtualization, OLTP, NoSQL, web servers,

file servers, and mail servers.

The DC SN640 NVMe SSD is ideal for replacing SATA SSDs by delivering 6x

improvement in sequential read performance and 3x improvement random mixed

read/write performance. The DC SN640 boosts data center performance and

responsiveness as direct attached, distributed storage or in large scale cloud

deployments.

The DC SN640 includes Western Digital’s 96-Layer BiCS4 3D TLC NAND and Western

Digital’s NVMe 1.3c controller and incorporates enterprise reliability features, such

as power-loss protection, end-to-end data path protection, and a five-year limited

warranty.

Designed for Workload Flexibility

The Ultrastar DC SN640 is available in two endurance classes: 0.8 DW/D (capacities

from 960GB-7.68TB) and 2 DW/D (capacities 800GB-6.4TB).

The 0.8 DW/D SKU features tunable endurance, giving customers the flexibility to

configure endurance and performance for seasonal burst workloads.

Safeguarding Data

The Ultrastar DC SN640 includes power loss protection to ensure that data is not lost

during unexpected power interruption. It is available with Secure Erase (SE), Instant

Secure Erase (ISE), or TCG Ruby security options. SE and ISE provide entire drive erase

options upon decommissioning. The DC SN640 is available as a self-encrypting drive

with TCG Ruby to provide protection for data in storage and to help meet compliance

criteria.

Better with NVMe

Now is the right time to upgrade from SATA SSDs to NVMe performance in cloud/

hyperscale and on-prem data centers. The Ultrastar DC SN640 NVMe SSD will

help enable lower TCO compared to SATA SSDs, while providing low-latency and

performance for current demanding workloads and future requirements.

2.5-inch U.2, 7mm, NVMe SSD

800GB, 1.6TB, 3.2TB, 6.4TB,

960GB, 1.92TB, 3.84TB, 7.68TB¹

Features

• Western Digital NVMe 1.3c compliant controller;

PCIe Gen3.1x4

• Western Digital BiCS4 96L 3D TLC NAND

• 0.8 and 2 DW/D

• Data-loss protection

• MTBF rating of 2 million hours

• Secure Erase (SE), Instant Secure Erase (ISE), TCG

Ruby

• 5-year limited warranty

• Enterprise features including variable sector

sizes, end-to-end data path protection and

Power Loss Protection. TCG Ruby models

include 128 namespaces, NVMe-MI version 1.1.

Benefits

• Optimized for performance and latency

consistency on mixed used workloads

• 6x read performance improvement over SATA

SSDs

• Vertically integrated with proven controller

architecture accelerates qualification

Specialized for the Following

Applications

• Boot, cache or storage

• Software Defined Storage

• File, Block and Object Storage applications

• Hyper-converged Infrastructure

• Virtualization

DATA SHEET

Ultrastar® DC SN640