HGST Ultrastar DC HC520 HDD 12TB 7200RPM SAS 12Gb/s 3.5" 512e ISE Helium Enterprise OEM Hard Drive HUH721212AL5200 (0F29530)



• 12TB capacity in a standard 3.5-inch form factor
• PMR technology works with all capacity enterprise applications & environments
• Reliable, field-proven, 4th generation design
• Outstanding power efficiency (Watts/TB)
• SATA 6Gb/s and SAS 12Gb/s
• 2.5M hours MTBF2 rating
• Instant Secure Erase (ISE) & Self-Encrypting Drive (SED) options
• Advanced Format 4Kn and 512e models

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  • Avaiability In stock
  • SKU 0F29530

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. The stable internal environment
created by fourth-generation HelioSeal® technology enables a new 8-disk design,
increasing the capacity by 20% when compared to the 7-disk design of the prior
generation, Ultrastar DC HC510. 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.

Data Durability and Data Security to Support Compliance and Privacy Requirements
As drive capacity grows beyond single-digit TBs, object storage systems with erasure
coding provide better data durability compared to RAID systems, given its tolerance for
simultaneous error conditions. The Ultrastar DC HC520 is a best-fit for object storage
implementations with its massive capacity and unbeaten reliability rating. Compliance
and privacy requirements drive the need for increased data security. The Ultrastar DC
HC520 offers security and encryption options to help protect data from unauthorized
use, including TCG SAS models.

Western Digital Quality and Service
The Ultrastar DC HC520 extends Western Digital’s long-standing tradition of reliability
leadership with a 2.5M-hour MTBF rating and a 5-year limited warranty. Ultrastar quality,
capacity, power efficiency, and world-class technical support and service provides
customers with a lower total cost of ownership over previous generations. Western
Digital data center drives are backed by an array of technical support and services,
which may include customer and integration assistance. Western Digital is dedicated to
providing a complete portfolio of products and services to help create environments for
data to thrive.

• Enterprise and data center applications where capacity density, power efficiency and reliability are paramount
• Cloud & Hyperscale storage
• Massive scale-out (MSO), high-density data centers
• Distributed File Systems
• Bulk storage using object storage solutions like CEPH™ and OpenStack Swift
• Primary and secondary storage for Hadoop® to support Big Data Analytics
• Centralized video surveillance
• Ideal for all mainstream enterprise capacity applications


Brand Western Digital
Series Ultrastar
Model HUH721212AL5200
Interface SATA 12Gb/s
Capacity 12TB
RPM 7200 RPM
Cache 256MB
Usage For Enterprise, Data central
Reliability 2,500,000 hours
Weight 1.75 lbs

Additional Information
Item Condition Brand New
Brand Western Digital
MPN HUH721212AL5200