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Western Digital Ultrastar DC HC520 12 TB (0F30146)

3.5" 12 TB 7200 RPM 256 MB SATA 6Gb/s 512e server hard drive (bulk)

Western Digital Ultrastar DC HC520 12 TB (0F30146) 3.5" 12 TB 7200 RPM 256 MB SATA 6Gb/s 512e server hard drive (bulk)
Internal hard drive
Review Western Digital Ultrastar DC HC520 12 TB (0F30146)

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3 customer reviews

The Ultrastar DC HC520 12Tb hard drive is specially designed for professionals for use in data centres. This 3.5" enterprise hard drive is perfectly suited for server use with its RAFF anti-vibration technology and 550 TB/year load.

3.5" 12 TB 7200 RPM 256 MB SATA 6Gb/s 512e server hard drive (bulk)

Capacity:
Cache size:
Capacity:
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Overview

Ultrastar DC HC520: High Density Storage


The Western Digital Ultrastar DC HC520 12Tb hard drive is especially dedicated to professionals for use in data centres. Indeed, this 3.5" hard drive for companies has many assets for a server use such as its RAFF anti-vibration technology, a load of 550 TB/year and an MTBF of 2.5 million hours.

Available in 10TB, 12TB and 14TB capacities, the DC HC500 Series can be used for enterprise servers, backup systems, cloud and enterprise NAS that require 512-byte (512e) sector size for high performance and high density storage with HelioSeal technology.


Designed for data centres

The Ultrastar DC HC520 features multi-axis shock sensor technology that automatically detects and compensates for even the smallest shocks to protect the data stored on the Ultrastar DC HC520, and is equipped with RAID-specific features such as error recovery time that is reduced through the hard drive's error recovery processes. Ramp load/unload technology moves the recording heads away from the platters when the drive is not in use and when powering down, ensuring less wear and tear on the recording heads and media.


Main features :

  • 3.5" 12 TB hard disk for data centres
  • Professional use for servers, NAS, cloud and data centres
  • Cache memory: 256 MB
  • Rotational speed: 7200 RPM
  • RAFF anti-vibration technology
  • MTBF: 2.5 million hours
  • Annual load: 550 TB
  • Average power consumption : 6.3 W (operating), 5 W (idle)
  • Manufacturer warranty : 5 years
Specifications
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General information

Product name

 Western Digital Ultrastar DC HC520 12 TB (0F30146)

Brand

 Western Digital

Model

 0F30146

Main characteristics

Interface with the computer

 Serial ATA 6Gb/s (SATA Revision 3)

Hard drive format

 3" 1/2

Capacity

 12 TB

Performance

Rotation speed

 7200 RPM

Cache size

 256 MB

Recording technology

 PMR

Design

Hard drive type

 HDD (Hard Disk Drive)

Use

 for server

Physical characteristics

Width

 101.6 mm

Height

 26.1 mm

Depth

 147 mm

Weight

 660 g

Warranties

Commercial warranty

 Seller 3 years

Legal warranty

 See terms & conditions

See all Western Digital products

See Western Digital Internal hard drive section

Product referenced on 21 Nov 2018

Customer reviews
Global rating
10/10
based on 3 reviews Editorial and moderation guide
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    3 reviews
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  • by Rodolphe S
    Posted on 3 Sep 2024
    Bought on 31 Aug 2024 from LDLC
    Number of reviews: 13 Average rating: 8

    Excellent product

    This 12TB drive is immediately recognised by Windows 11 and formatted in GPT. The capacity of the drive drops from 12TB to 11.178TB, i.e. almost 800GB of unused volume. I had anticipated this and ordered a 12TB instead of a 10TB. File transfer speed varies between 205 and 235 MB/s. There's no noise and it writes and reads just the same. My previous 4Tb Western Digital HDD never failed in 3 years, and is still under warranty for 2 more years, like this new 12Tb. I have trusted Western Digital for over 16 years and recommend their products.
    Thanks to LDLC for the fast order and delivery in less than 36 hours!

    Review automatically translated
  • by francky14
    Posted on 22 Jun 2022
    Bought on 19 Jun 2022 from LDLC
    Number of reviews: 36 Average rating: 9

    Good flows

    I received it quickly as usual, it heats up less than the 18 and 20TB versions (45° vs 52°, on a usb dock so not ventilated). I've been using my LDLC usb dock for several years now. Good speeds 155MB/sec on average with peaks at 201MB/sec. It makes a bit of noise (it scratches a bit at times) but it's still reasonable.

    Review automatically translated
  • by John G.
    Posted on 30 Jul 2019
    Bought on 4 Jul 2019 from LDLC
    Number of reviews: 16 Average rating: 8

    Excellence in every respect

    Superb performance for this drive (210 MB/s write on large files). The large buffer allows me to make copies from several different sources in parallel while maintaining this throughput overall.

    Extremely competitive price (37.5€ per TB).

    Although I can't back it up personally yet (I've only had the drive for a month), in theory the reliability should be excellent:
    - 5 year warranty.
    - Announced MTBF of 2.5 million hours.
    - Designed by HGST (the most reliable drives according to Backblaze reports)

    The only downside: The drive is noisy when reading/writing.
    This is hardly a criticism of a datacenter drive but it still prevents me from giving it a 10/10.

    Review automatically translated
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