---
product_id: 366015645
title: "HGST Corporation - WD Ultrastar DC HC520 HDD | HUH721212ALE600 | 12TB 7.2K SATA 6Gb/S 256MB Cache 3.5-Inch | ISE 512E | 0F30144 | Helium Data Center Internal Hard Disk Drive"
brand: "helioseal"
price: "€ 13.28"
currency: EUR
in_stock: false
url: https://www.desertcart.ie/products/366015645-hgst-corporation-wd-ultrastar-dc-hc520-hdd-huh721212ale600-12tb-7
store_origin: IE
region: Ireland
---

# SATA 6Gb/s ultra-fast interface 12TB massive capacity 2.5M hours MTBF reliability HGST Corporation - WD Ultrastar DC HC520 HDD | HUH721212ALE600 | 12TB 7.2K SATA 6Gb/S 256MB Cache 3.5-Inch | ISE 512E | 0F30144 | Helium Data Center Internal Hard Disk Drive

**Brand:** helioseal
**Price:** € 13.28
**Availability:** ❌ Out of Stock

## Summary

> 🚀 Elevate your data center game with the Ultrastar DC HC520 — where power meets precision.

## Quick Answers

- **What is this?** HGST Corporation - WD Ultrastar DC HC520 HDD | HUH721212ALE600 | 12TB 7.2K SATA 6Gb/S 256MB Cache 3.5-Inch | ISE 512E | 0F30144 | Helium Data Center Internal Hard Disk Drive by helioseal
- **How much does it cost?** € 13.28 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/366015645-hgst-corporation-wd-ultrastar-dc-hc520-hdd-huh721212ale600-12tb-7)

## Best For

- helioseal enthusiasts

## Why This Product

- Trusted helioseal brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Massive 12TB Storage:** Store your entire data universe with ease and scale effortlessly.
- • **Rock-Solid Reliability:** Industry-leading 2.5 million hours MTBF means your data stays safe 24/7.
- • **Helium-Sealed Efficiency:** Cut power use by 52% vs air-filled drives—eco-friendly and cost-saving.
- • **Optimized for Hyperscale:** Designed for cloud and data centers craving high density, durability, and power efficiency.
- • **Instant Secure Erase (ISE):** Wipe data instantly and securely—perfect for sensitive enterprise environments.

## Overview

The HGST Ultrastar DC HC520 is a 12TB helium-filled 3.5-inch HDD engineered for data centers and hyperscale environments. Featuring a 7200 RPM spindle, SATA 6Gb/s interface, and 256MB cache, it delivers high capacity with 52% lower power consumption per TB compared to air-filled drives. With a 2.5 million hour MTBF and instant secure erase capability, it offers unmatched reliability and security for enterprise workloads up to 550TB/year.

## Description

More Value to the Data Center with Maximum Capacity, Power Efficiency and Reliability  Laying the foundation for a worry-free data center, Western Digital delivers capacity to conquer the data explosion – Ultrastar DC HC520, previously known as Ultrastar He12 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. This high capacity helium drive offers one of the lowest power profiles in the industry to help data center architects meet eco-environmental goals and requirements. Targeted at 2.5M hours MTBF, the Ultrastar DC HC520 provides the highest reliability rating available of all HDDs on the market today by building on the successful design of its 10TB, 8TB and 6TB predecessors. Trust Western Digital and the Ultrastar DC HC520 to deliver more capacity, more efficiency, more reliability and more value to your data center.  The Technology Helps Solve Challenges Facing Next Generation Data Centers  Lowering the total cost of ownership (TCO) has become the focus of data center architects and the Ultrastar DC HC520 provides the best value proposition and greatest storage efficiency available. Compared to 8TB Ultrastar air-filled drives, this hard drive provides 50% more capacity, uses 52% less power (Watts/TB), and is 25% more reliable, rated at 2.5M hours MTBF.“Power Disable” feature is a new industry standard feature defined for SATA devices. This new feature allows the host system to perform a hard reset to the hard drive ( HDD )

## Features

- Instant secure erase (ISE), endurance optimized with field-proven helium design
- Dual safe firmware for reliable updates, 2.5M MTBF, power efficient with low idle W/TB than air-filled drives
- High capacity storage for big data storage applications, perfect for cloud and hyperscale storage that need durability and security
- Optimal for high-density data centers and centralized video surveillance for reliability, capacity density, and power efficiency
- 12TB of storage capacity, SATA III interface, 256MB buffer, 7200 RPM spindle rotational speed

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | HelioSeal |
| Manufacturer | hp |
| Series | Ultrastar He12 |
| Colour | Grey |
| Form Factor | 3.5-inch |
| Item Height | 1.03 Inches |
| Item Width | 4.01 Inches |
| Product Dimensions | 14.71 x 10.19 x 2.62 cm; 762 g |
| Item model number | 0F30144 |
| Hard Drive Size | 12 TB |
| Hard Disk Description | Mechanical Hard Disk |
| Hard Drive Interface | SATA 6 GB/s |
| Hard Disk Rotational Speed | 7200 RPM |
| Are Batteries Included | No |
| Included Components | 12 TB Data Center Hard Drive |
| Manufacturer | hp |
| Item Weight | 762 g |

## Product Details

- **Digital Storage Capacity:** 12000 GB
- **Hard Disk Interface:** SATA 6 GB/s
- **Connectivity Technology:** SATA
- **Brand:** HelioSeal
- **Special Feature:** Multitasking
- **Hard Disk Form Factor:** 3.5 Inches
- **Hard Disk Description:** Mechanical Hard Disk
- **Compatible Devices:** Desktop
- **Installation Type:** Internal Hard Drive
- **Colour:** Grey

## Images

![HGST Corporation - WD Ultrastar DC HC520 HDD | HUH721212ALE600 | 12TB 7.2K SATA 6Gb/S 256MB Cache 3.5-Inch | ISE 512E | 0F30144 | Helium Data Center Internal Hard Disk Drive - Image 1](https://m.media-amazon.com/images/I/61lC1gwLCZL.jpg)
![HGST Corporation - WD Ultrastar DC HC520 HDD | HUH721212ALE600 | 12TB 7.2K SATA 6Gb/S 256MB Cache 3.5-Inch | ISE 512E | 0F30144 | Helium Data Center Internal Hard Disk Drive - Image 2](https://m.media-amazon.com/images/I/71MaMYLg2dL.jpg)
![HGST Corporation - WD Ultrastar DC HC520 HDD | HUH721212ALE600 | 12TB 7.2K SATA 6Gb/S 256MB Cache 3.5-Inch | ISE 512E | 0F30144 | Helium Data Center Internal Hard Disk Drive - Image 3](https://m.media-amazon.com/images/I/718rG4NtKNL.jpg)
![HGST Corporation - WD Ultrastar DC HC520 HDD | HUH721212ALE600 | 12TB 7.2K SATA 6Gb/S 256MB Cache 3.5-Inch | ISE 512E | 0F30144 | Helium Data Center Internal Hard Disk Drive - Image 4](https://m.media-amazon.com/images/I/816xM9tEz7L.jpg)
![HGST Corporation - WD Ultrastar DC HC520 HDD | HUH721212ALE600 | 12TB 7.2K SATA 6Gb/S 256MB Cache 3.5-Inch | ISE 512E | 0F30144 | Helium Data Center Internal Hard Disk Drive - Image 5](https://m.media-amazon.com/images/I/81z917VuhPL.jpg)

## Questions & Answers

**Q: What is the warranty on this 12GB drive?**
A: Hi, The warranty is 5 Year Manufacture Warranty which can be claimed by going on WD.com under warranty claim. If you purchase from us Serverpartdeals and you have a failure we would be happy to assist you in getting a quick replacement. As a seller of these drives, we do not see failure rates to be alarming. More often with Enterprise Drives you have the quality to last you past 5 years of use. Shipping is also very important to make sure there is no damage to your drives, hence we use suspended HDD boxes custom made for these drives do avoid failure and intern warranty claims.

**Q: What is the date of manufacture?**
A: The drives I purchased were manufactured about a month before I received them. I believe these drives are still manufactured in the same factories which belonged to Hitachi before they were bought out by WD. But I don't know whether the particular drive you are looking at was on stock at Amazon or the supplier for longer than that. However, I would suggest you don't need to worry about the manufacturing date, as the warranty will start on purchase date. Let me tell you, these are the best and most reliable drives you can buy. I have Ultrastars running in my servers since over 10 years (yes, never replaced), none of those ever failed me.

**Q: What is the year of manufacture?**
A: I guess it depends on amazon's stock. Mine were manufactured a month before I received them. If you order now I'm confident you get 2020 drives.

**Q: s this hard drive work with desktop pc ?**
A: Yes

## Frequently Bought Together

- HGST - WD Ultrastar DC HC520 HDD | HUH721212ALE600 | 12TB 7.2K SATA 6Gb/s 256MB Cache 3.5-Inch Helium Data Center Internal Hard Disk Drive
- SABRENT USB 3.0 to SATA External Hard Drive Lay-Flat Docking Station for 2.5 or 3.5in HDD, SSD [Support UASP] (EC-DFLT)

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-03-18*