WD 20TB Ultrastar 7200 rpm SATA 3.5" Internal Data Center HDD

BH #WE0F38755 • MFR #0F38755
WD
WD 20TB Ultrastar 7200 rpm SATA 3.5" Internal Data Center HDD
Key Features
  • 20TB Storage Capacity
  • 3.5" Form Factor
  • SATA III 6 Gb/s Interface
  • 512 MB Cache
The 20TB Ultrastar 7200 rpm SATA 3.5" Internal Data Center HDD from WD is an enterprise-grade drive designed for demanding 24x7 data storage solutions. Ultrastar drives are built to be durable, using CMR technology and featuring up to an error tolerance of <1 in 1015, a MTBF rating of 2 million hours, and an Annualized Failure Rate (AFR) of 0.44%, depending on the model. Endurance aside, this drive offer fast 7200 rpm performance with 512 MB of cache and data transfer speeds of up to 600 MB/s.
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WD Internal HDD Overview

  • 1Description
  • 2Enterprise-Class Storage
  • 3Vibration Protection
  • 4Dynamic Fly-Height & Dual-Stage Actuator Technology
  • 5Compatibility Testing
By B&H Photo's

The 20TB Ultrastar 7200 rpm SATA 3.5" Internal Data Center HDD from WD is an enterprise-grade drive designed for demanding 24x7 data storage solutions. Ultrastar drives are built to be durable, using CMR technology and featuring up to an error tolerance of <1 in 1015, a MTBF rating of 2 million hours, and an Annualized Failure Rate (AFR) of 0.44%, depending on the model. Endurance aside, this drive offer fast 7200 rpm performance with 512 MB of cache and data transfer speeds of up to 600 MB/s.

Enterprise-Class Storage
Designed for data centers and demanding environments, WD Ultrastar drives have a MTBF rating of at least two million hours and are built for yearly (24x7x365) operation.
Vibration Protection
WD Ultrastar drives are built with Enhanced Rotational Safeguard (RVS) technology, which monitors and corrects linear and rotational vibrations in real-time for improved performance.
Dynamic Fly-Height & Dual-Stage Actuator Technology
Dynamic Fly-Height technology utilizes real-time read/write head adjustments for consistent performance, reduced errors, and optimized reliability. Dual-Stage Actuator technology improves positional accuracy over the data track. The primary actuator provides course displacement using conventional methods, whereas the secondary actuator uses piezoelectric motion to fine-tune the head positioning to a higher degree of accuracy.
Compatibility Testing
WD Ultrastar hard drives are extensively tested with a variety of storage systems, SATA controllers, and host bus adapters to ensure they are a simple plug-and-play storage solution.
UPC: 829686007727

WD Internal HDD Specs

Storage Capacity20 TB SATA III (6 Gb/s) 3.5" HDD (7200 rpm)
Read SpeedMaximum: 600 MB/s
Write SpeedMaximum: 600 MB/s
Buffer512 MB
Latency4.1 ms
HDD Specs
Areal Density1131 Gb/in²
Disk Sector Format512e, Advanced Format (4Kn)
Noise Level20.0 dB (Idle)
32.0 dB (Active)
Reliability / Data Integrity
Annualized Failure Rate (AFR)0.35 %
EncryptionNone
Mean Time Between Failures (MTBF)2.5 Million Hours
Non-Recoverable Read Errors per Bits Read1 in 1015
Electrical
Power Draw7.0 W (Active)
6.0 W (Idle)
Supported Voltage5 VDC, 12 VDC
Environmental
Storage Temperature-40 to 158°F / -40 to 70°C
Storage Shock250 G / 2.0 ms
Storage Vibration1.04 G / 2 to 200 Hz
General
Dimensions5.8 x 4" / 147 x 101.6 mm
Weight1.5 lb / 690 g
Packaging Info
Package Weight1.875 lb
Box Dimensions (LxWxH)7.3 x 7.3 x 4.6"

WD Internal HDD Reviews

Fantastic!

By Preston
Rated 5 out of 5
Date: 2022-10-01

I have 10 of these. 0 DOA. They just chug along and do what they are suppose to do all day and all night. Highly recommended!

A good first few days - quiet and at rated speeds.

By William
Rated 5 out of 5
Date: 2022-08-31

Working well with thunderbolt 3/4 enclosures R/W speeds at 260/265 More quiet at starts and sustained IO vs. 20TB Seagate Ironwolf NAS

reliable HD with lots of space for storage

By Pal
Rated 5 out of 5
Date: 2022-08-19

Excellent HD with large capacity for storage or to be used in servers or NAS devices. I have been using several of previous 18 and 16 TB versions, never had any failure.

great when they work

By David
Rated 4 out of 5
Date: 2022-06-08

B&H customer service was spot on replacing the DOA (1 of 2) unit. Performance in an AMD/Asus-MB based RAID1 scenario has been good so far.

This is originally Hitachi brand

By Brent
Rated 3 out of 5
Date: 2022-05-27

This is originally Hitachi brand. I was expecting Western Digital hard drives.

Failed after 5 months

By Douglas
Rated 1 out of 5
Date: 2022-05-18

After 5 months of use on a UPS, drive unmounted unexpectedly and would not remount Changed enclosures, ports with no success.

Good Drive

By Bruno
Rated 5 out of 5
Date: 2022-10-01

I've been running up to 12 of these 14TB drives for up to 3 years, storing and working on large files (I'm a photographer). No problems so far. They run cool enough for my enclosures, and quiet enough for phone conversations 2 feet from the drive array.

Shipped Quick to Canada

By David
Rated 5 out of 5
Date: 2022-09-21

Really appreciate the international shipping & duty handling on this order. More affordable than buying one here for some reason. Can't really rate a HDD right away, but it arrived undamaged & seems to run fine. 3rd Ultrastar to replace an older failed Seagate.

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Date published: 2021-12-31

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