---
product_id: 258614838
title: "HGST - 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: "$10.22"
currency: USD
in_stock: true
url: https://www.desertcart.us/products/258614838-hgst-wd-ultrastar-dc-hc520-hdd-huh721212ale600-12tb-7-2k
store_origin: US
region: United States of America
---

# 7200 RPM high-speed rotation 12TB massive capacity Instant Secure Erase (ISE) tech HGST - 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:** $10.22
**Availability:** ✅ In Stock

## Summary

> 💼 Elevate your data game with enterprise-grade power and peace of mind.

## Quick Answers

- **What is this?** HGST - 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?** $10.22 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/258614838-hgst-wd-ultrastar-dc-hc520-hdd-huh721212ale600-12tb-7-2k)

## 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

- • **Instant Secure Erase:** Wipe data instantly and securely—perfect for sensitive enterprise environments.
- • **Massive 12TB Storage:** Store your entire digital empire without compromise.
- • **Rock-Solid Reliability:** 2.5 million hours MTBF and dual safe firmware ensure your data stays safe and accessible.
- • **Helium-Sealed Endurance:** Field-proven helium design for cooler, quieter, and longer-lasting performance.
- • **Power-Efficient Operation:** Lower idle watts per terabyte means greener data centers and reduced costs.

## Overview

The HGST WD Ultrastar DC HC520 is a 12TB 3.5-inch helium-sealed HDD designed for data centers and hyperscale storage. Featuring 7200 RPM speed, SATA 6Gb/s interface, 256MB cache, and Instant Secure Erase technology, it delivers high capacity, power efficiency, and robust reliability backed by a 5-year warranty and 2.5 million hours MTBF.

## 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, power efficient with lower 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
- 5 year manufacturer warranty, 2.5 million hours mean time between failures

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | HelioSeal |
| Product Dimensions | 14.71 x 10.19 x 2.62 cm; 762 g |
| Item model number | 0F30144 |
| Manufacturer | HGST |
| Series | Ultrastar He12 |
| Color | red |
| Form Factor | 3.5-inch |
| 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 |
| Item Weight | 762 g |

## Product Details

- **Digital storage capacity:** 12000 GB
- **Hard disk interface:** SATA 6 GB/s
- **Connectivity technology:** SATA
- **Brand:** HelioSeal
- **Special features:** Compact
- **Hard disk form factor:** 3.5 Inches
- **Hard disk description:** Mechanical Hard Disk
- **Compatible devices:** Desktop
- **Installation type:** Internal Hard Drive
- **Colour:** red

## Images

![HGST - 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 - 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 - 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 - 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 - 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 United States of America*
*Store origin: US*
*Last updated: 2026-03-20*