Western Digital WUS4BB038D7P3E3 User Manual

DATA SH E E T

Ultrastar DC SA210 Ultrastar DC SN630 Ultrastar DC SN640

2.5-inch U.2, 7mm, NVMe SSD 800GB, 1.6TB, 3.2TB, 6.4TB,

960GB, 1.92TB, 3.84TB, 7.68TB

Features

• Western Digital NVMe 1.3 compliant controller; PCIe Gen3.1×4

• Western Digital BiCS4 96L 3D TLC NAND

• 0.8 and 2.0 DWPD

• Data-loss protection

• MTBF rating of 2 million hours

• Instant Secure Erase (ISE)

• 5-year limited warranty

Beneﬁts

• Optimized for all common read-intensive and mixed used workloads

• Up to 195K IOPS (70/30 random mixed workload)

• 5x read performance improvement over SATA SSDs and 65% less power consumption compared to 25W performance NVMe SSDs

• Vertically integrated with proven controller architecture accelerates qualiﬁcation

Ultrastar

DC SN640

Ultrastar® DC SN640 NVMe™ for Data Centers

NVMe™ SSDs are speciﬁcally designed to maximize ﬂash memory performance. They offer ultra-low latency, high scalability and lower TCO over traditional SATA-based SSDs. NVMe SSDs are widely deployed in the public cloud segment to better manage peak demands and demanding workloads such as AI/ML, OLTP, virtualization, CDN and others. Traditional SATA-based SSDs have become a bottleneck for on-premises data centers utilizing higher performance CPUs in converged, hyper-converged and composable infrastructure designs. With NVMe SSDs, IT organizations can optimize their data center infrastructure, improve storage capacity utilization for demanding workloads, enhance responsiveness for critical applications, maintain uptimes and availability, and lower their TCO.

Western Digital’s Ultrastar® DC SN640 NVMe SSD offers improved performance and responsiveness over prior generations, with capacities from 960GB-7.68TB at 0.8 DW/D and 800GB-6.4TB at 2 DW/D in a U.2 form factor. The DC SN640 includes Western Digital’s 96-Layer BiCS4 3D TLC NAND and Western Digital’s NVMe 1.3 controller, providing up to 5x read performance improvement over SATA SSDs. The DC SN640 incorporates enterprise reliability features such as power-loss protection, end-to-end data path protection, and a ﬁve-year limited warranty.

3500

3000

2500

2000

1500

1000

500

Sequential Performance (MB/Sec)

Sequential Reads (128K) Sequential Writes (128K)

500

450

400

350

300

250

200

150

100

Random Performance (KIOPS)

Random Reads (4K) Random Writes (4K)

Designed for Workload Flexibility

The DC SN640 comes in two endurance classes: 0.80 DW/D and 2 DW/D, each for ﬁve years. The 0.80 DW/D endurance class is designed for read-intensive applications while the 2 DW/D endurance class can be deployed in mixed-use workloads that require higher endurance levels over the life of the drive or higher performance for write-intensive applications.

Specialized for the Following Applications

• Boot, cache or storage

• Software Deﬁned Storage

• File, Block and Object Storage applications

• Hyper-converged Infrastructure

• Virtualization

Safeguarding Data

The Ultrastar DC SN640 with Instant Secure Erase (ISE) helps safeguard data and provides instant erase upon decommissioning and recommissioning the drive. Secured Firmware downloads with RSA authentication ensure that the drive runs authentic Western Digital ﬁrmware only.

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.

Ultrastar® DC SN640

DATA SHEET

Speciﬁcations

Model Information

Endurance 2D W/ D 2D W/ D 2D W/ D 2D W/ D 0. 8DW/ D 0. 8DW/ D 0. 8DW/ D 0. 8DW/ D

Capacity 800GB 1,600GB 3,200GB 6,400GB 960GB 1,9 20GB 3,840GB 7,6 80 G B

Maximum Petabytes Written 2.92 5.84 11.68 23.36 1.4 2.8 5.61 11.21

Conﬁguration

Interface PCIe Gen 3.1 x4 (Compliant to NVMe 1. 3)

Form Factor 2.5-inch U.2. 7mm

Flash Memory Technology Western Digital BiCS4 3D TLC NAND

Performance

Read Throughput (max MiB/s, Seq 128KiB)

Write Throughput (max MiB/s, Seq 128KiB)

Read IOPS (max, Rnd 4KiB) 414K 473K 468K 469K 413K 472K 469K 4 67K

Write IOPS (max, Rnd 4KiB)

Mixed IOPS (max, 70/30 R/W, 4KiB)

Read Latency (s, avg.)

Reliability

Uncorrectable Bit Error Rate (UBER) 1 in 10

MTBF5 (M hours) 2

Annualized Failure Rate (AFR)

Availability (hrs/day x days/wk)

Limited Warranty6 (years)

Power

Requirement (DC +/- 10%) +12V

Operating Power States (W, typical) 10, 11, 12

Idle (W, average) < 5W

Physical Size

z-height (mm) 7.00 +0.2/-0.5 (including labe ls)

Dimensions (width x length x mm)

Weight (g, max) 95

Environmental

Operating Temperature

Non-Operating Temperature

3K 3 .1K 3.1K 3.1K 3K 3.1K 3.1K 3.1K

1K 2K 1.8K 1.8K 1.1K 2K 1.8K 1.8K

108K 116K 115K 116K 4 4K 63K 63K 65K

184K 307K 286K 304K 111K 194K 174K 187K

204 208 225 225 210 208 221 225

0.4 4%

24×7

69.85 (+/- 0.25) x 100.45

0°C to 70° C

-40°C to 85°C

Feature Part Number Model Number Capacity Endurance

Instant Secure Erase 0TS1927 WUS4BB096D7P3E3 960GB 0.8 D W/ D

0TS1928

WUS4BB038D7P3E3 1,920GB 0 . 8 DW/ D

0TS1929 WUS4BB076D7P3E3 3,840GB 0. 8 DW/ D

0TS1930 WUS4BB076D7P3E3 7,68 0 G B 0 . 8 DW/ D

0TS1952 WUS4CB080D7P3E3 800GB 2 DW/D

0TS1953 WUS4CB016D7P3E3 1,600GB 2 DW/ D

0TS1954 WUS4CB032D7P3E3 3,200GB 2 DW/ D

0TS1955 WUS4CB064D7P3E3 6,400GB 2 DW/ D

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www.westerndigital.com

©2020 Western D igita l Corpor ation or i ts afﬁ liates. A ll rights r eserv ed. Wester n Digita l, the Weste rn Digit al logo, and Ultras tar are registere d trade marks or t rademarks of Western D igital Corpo ration or its af ﬁliates in the US a nd/or othe r countries. Th e NVMe word mark is a tra demark of NVM E xpress. Inc. All o ther marks are th e property of the resp ective owners. R eferences in this p ublication to Wes tern Digital pro ducts, progra ms, or service s do not imply that th ey will be made avai lable in all count ries. Produc t speciﬁc ations provided a re sampl e speciﬁ cation s that are su bject to ch ange an d do not con stitute a w arrant y. Please v isit the Su ppor t sectio n of our web site, www.westerndigital.com/support, for additional information on product speciﬁcations. Pictures shown may vary from actual products.

 One giga byte (GB) is eq ual to 1,000 MB (one bill ion byte s) due to oper ating

environment.

 Endura nce ratin g based on DW/D using 4KiB rand om write wo rkloa d over 5 years .

Based on i nternal testing . Perfo rmance w ill var y by capac ity poi nt, or with t he changes

in useable capacity. Consult product manual for further details. All performance measure ments are in full su stain ed mode a nd are pea k values. S ubjec t to change .

Average rea d latency at 4KiB, QD =1.

MTBF and AF R speciﬁcation s are base d on a sampl e population an d are estim ated

by statistical measurements and acceleration algorithms under typical operating condit ions for th is drive model. MT BF and AFR ra tings do not predic t an individual drive’s rel iabilit y and do not consti tute a warranty.

The warr anty for the produ ct will expire on th e earlie r of (i) the d ate when the ﬂash

media ha s reached one-pe rcent (1%) of its remaini ng life or ( ii) the ex piratio n of the time per iod associated w ith the pro duct.

Composite temperature reading.

Values are based on ambient temperature. Avoid non-operational exposure to

temper atures in ex cess of 40 °C for periods exc eeding t hree months.

02–01-WW-04–00073-A00 March 2020