0F30146 HUH721212ALE604 - Western Digital WD Ultrastar DC HC520 | Aztek Computers
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SKU: B9Q972Q1EQ |  Mfg. Part: 0F30146 HUH721212ALE604  | UPC: 829686005204  |  0 Reviews  |     Share Make an offer

0F30146 HUH721212ALE604 - Western Digital WD Ultrastar DC HC520 0F30146 HUH721212ALE604 12 TB 3.5 inch SATA 7200 RPM SE

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Product Overview

Ultrastar DC HC520, previously known as Ultrastar He and part of our HC500 series of helium-filled hard drives. Designed to handle workloads up to 550TB per year, the Ultrastar DC HC520 is the industry?s first 12TB drive and uses traditional perpendicular magnetic recording PMR technology to make it dropin ready for any enterprise-capacity application or environment.

Expert Overview

The Western Digital Ultrastar DC HC520 is a 12 TB internal hard disk drive designed for enterprise-capacity applications. This 3.5-inch SATA drive operates at 7200 RPM and utilizes traditional perpendicular magnetic recording (PMR) technology. It is engineered to support demanding workloads, rated for up to 550 TB per year, making it suitable for environments requiring high data throughput and continuous operation. The drive features a 256 MB data buffer and a sustained transfer rate of up to 255 MB/s. With 24x7 availability and a 2.5 million hour MTBF, it provides a reliable storage solution for business IT infrastructure. The part number for this model is 0F30146 HUH721212ALE604. It integrates into existing enterprise systems without requiring specialized infrastructure changes.

Technical Specifications

Interface
SAS 12Gb/s Capacity1 (TB)
SATA 6Gb/s Capacity1 (TB)
12TB Format: Sector size3 (bytes)
512 Max. Areal density(Gbits/sq. in.)
864 Data buffer4 (MB)
256 Rotational speed (RPM)
7200 Latency average (ms)
4.16 Interface transfer rate(MB/s, max)
600 Sustained transfer rate5(read/write, ms, typical)
243 (MiB/s, typical),255 (MB/s, typical) Seek time6(read/write, ms, typical)
8.0/8.6 Error rate(non-recoverable, bits read)
1 in 1015 Load/Unload cycles(at 40oC)
600,000 Availability(hrs/day x days/wk)
24x7 MTBF2 (M hours)
2.5 Annualized Failure Rate2 (AFR)
0.35% Idle (Bels, typical)
2.0/3.6 Requirement
+5 VDC, +12VDC Operating7 (W)
7.2 Idle8 (W)
6.1

Product Details

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  • Western Digital
  • 0F30146 HUH721212ALE604
  • 829686005204
  • New
  • 2 lbs
  • 5 X 5 X 5
  • Aug 26, 2026
  • Apr 11, 2026
Product Identifiers: Brand: Western Digital • Part #: 0F30146 HUH721212ALE604 • UPC: 829686005204 • Category: Internal Hard Disk Drives

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Frequently Asked Questions

What interface does this hard drive use?

The WD Ultrastar DC HC520 uses a SATA 6Gb/s interface, ensuring compatibility with standard enterprise storage systems.

What is the rotational speed of this drive?

This hard drive operates at a rotational speed of 7200 RPM, which contributes to its data access and transfer performance.

What is the typical annual workload capacity for this drive?

The Ultrastar DC HC520 is designed to handle workloads up to 550 TB per year, making it suitable for high-demand enterprise environments.

What is the capacity of this hard drive?

This internal hard disk drive offers a storage capacity of 12 TB.

0F30146 HUH721212ALE604 - Western Digital WD Ultrastar DC HC520 0F30146 HUH721212ALE604 12 TB 3.5 inch SATA 7200 RPM SE

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$308.50