WD 12TB Ultrastar DC HA340 7200 rpm SATA III 3.5" Data Center Drive

BH #WEUSHA34012T • MFR #0B47063
Print
WD 12TB Ultrastar DC HA340 7200 rpm SATA III 3.5" Data Center Drive
Key Features
  • 12TB Storage Capacity
  • 3.5" Form Factor
  • SATA III 6 Gb/s Interface
  • 512MB Cache
The 12TB Ultrastar DC HA340 7200 rpm SATA III 3.5" Data Center Drive from Western Digital is a medium capacity, air-filled HDD that delivers high IOPS to support data-intensive applications with durability and reliability. This 7200 rpm drive utilizes the SATA III 6 Gb/s interface and a 512MB cache for data transfer rates of up to 267 MB/s. Moreover, as a professional-grade drive, it has an MTBF rating of 2 million hours, 600,000 load/unload cycles, an error rate of 1 in 1015, and an annualized failure rate of 0.44%, all of which make it a solid choice for 24/7 environments.
More Details
In Stock
No Store Display
Free Delivery: Fri, Oct 30
to
Protect Your Gear
Add a protection plan from $44.99
Ask an Expert
800-606-6969

WD HA340 Overview

The 12TB Ultrastar DC HA340 7200 rpm SATA III 3.5" Data Center Drive from Western Digital is a medium capacity, air-filled HDD that delivers high IOPS to support data-intensive applications with durability and reliability. This 7200 rpm drive utilizes the SATA III 6 Gb/s interface and a 512MB cache for data transfer rates of up to 267 MB/s. Moreover, as a professional-grade drive, it has an MTBF rating of 2 million hours, 600,000 load/unload cycles, an error rate of 1 in 1015, and an annualized failure rate of 0.44%, all of which make it a solid choice for 24/7 environments.

Highlights
  • A capacity of 12TB in an air-based HDD platform design
  • Delivers high IOPS to data intensive applications
  • Superior reliability of field-proven hardware and firmware designs
  • Seamless integration with existing applications and environments
Target Audience
  • Data Center Architects
  • IT Administrators
  • Data Center Managers
  • AI System Administrators
Ideal for
  • Hyperscalers and High Performance Computing (HPC)
  • Artificial Intelligence training pools
  • Converged infrastructures
  • Cloud and hybrid cloud environments
Delivers High IOPS with Proven Technology
A combination of field-proven hardware with the latest innovative technologies enables these air-filled drives to deliver high IOPS to data-intensive applications.
Optimized Performance and Durability
Performance-optimized to deliver higher access densities (IOPS/TB) to data-intensive applications with proven durability.
Rapid Qualification and Integration
Leveraging hardware designs from generations of highly successful products ensures easy qualification, seamless integration, and rapid adoption.
Reliability You Can Trust
Built off the same platform that is deployed in thousands of data centers around the world, these drives deliver superior dependability and field-proven reliability for hassle free data storage.
Protected Against Vibration & Shock
WD's Rotational Vibration Safeguard (RVS) uses dual sensors to anticipate and counteract disturbances, maintaining peak performance in high-vibration environments. Combined with Dynamic Fly Height technology, Western Digital offers exceptional drive reliability and protection from unexpected shock events.
Trusted Reliability, Quality and Support
Western Digital stands behind their Ultrastar hard drives with the assurance of a 2 million hour MTBF rating and support services to help create environments for data to thrive.
UPC: 829686009318

WD HA340 Specs

Key Specs
Total Capacity
12 TB
Drive Type
SATA III / 3.5" HDD (7200 rpm)
Read Speed
Sustained: 267 MB/s
Random: 150 IOPS
Write Speed
Sustained: 267 MB/s
Random: 465 IOPS
Total Capacity
12 TB
Drive Type
SATA III / 3.5" HDD (7200 rpm)
Performance
Read Speed
Sustained: 267 MB/s
Random: 150 IOPS
Write Speed
Sustained: 267 MB/s
Random: 465 IOPS
Encryption Support
No
Mean Time Between Failures (MTBF)
2.0 Million Hours
Electrical
Power Draw
9.2 W (Active)
8.4 W (Idle)
Input Power
5 VDC
12 VDC
General
Operating Conditions
41 to 140°F / 5 to 60°C
Operating Shock
70 G
Storage Conditions
-40 to 158°F / -40 to 70°C
Dimensions
5.8 x 4 x 1" / 147 x 101.6 x 26.1 mm
Weight
1.7 lb / 750 g
Packaging Info
Package Weight
1.63 lb
Box Dimensions (LxWxH)
8.2 x 5.65 x 1.6"

WD HA340 Reviews

RIP Ultrastar

By Francois
Rated 1 out of 5
Date: 2026-01-21

I've been buying Ultrastar drives for servers I manage for at least a decade, starting when they were still made by Hitachi. Always had the best luck with those, zero failures. This is compared to WD or Seagate drives, which I regularly got bad examples of. Even after WD bought Hitachi, the Ultrastar models seemed to have the best record of reliability, so I stayed with them. Today this all changes. I ordered 5 of these drives from B&H to replace aging ones in a server that I manage for a health care office. All 5 were delivered in anti-static bags that looked like they'd been torn open and chewed on by a dog. 3 of the anti-static bags had labels with a serial number that did not match the drives they "contained" (that word is doing a lot of lift). 2 of the drives failed catastrophically within 2 minutes of being powered, emitting horrible grinding noises before seizing up solid. 1 drive failed silently within 30 minutes. The other 2 drives technically worked, but I don't trust them to use in a critical environment like a health care office. To B&H's credit, they approved the return of all 5 drives, and they'll be refunding me in full at zero cost to me. They assure me that these drives had only ever been sold a single time, they were not customer returns. If true, that means that their supplier sent them inventory of drives that were in torn-open anti-static bags, many of which had labels that don't match their contained drive. That makes the entire inventory suspect, and nobody should be buying them at all. THESE ARE DATA CENTER DRIVES! This is completely unacceptable. Avoid like the plague.

See any errors on this page?
Whatever You Need, We've Got It