WD Ultrastar DC HC520 12TB SATA Hard Drive - 0F30144

6Gb/s SATA-III, 3.5" form factor, 256MB cache, 7200rpm, 5 year manufacturer warranty.
Manufacturer: Western Digital
SKU: HDI0F30144

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.

HelioSeal Technology Helps Solve Challenges Facing Next Generation Data Centers
Data centers are facing growing pressures. Data volume is expanding, operating costs
are rising, yet budgets remain flat. 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 HelioSeal hard drive provides 50% more capacity, uses
52% less power (Watts/TB), and is 25% more reliable, rated at 2.5M hours MTBF.
Datacenter ready features like a second generation dual-stage actuator—the Western Digital
Micro Actuator—enhance head-positioning accuracy to deliver better performance,
data integrity and overall drive reliability, especially in multi-drive environments where
operational vibration is present. Refer to our technical brief to learn more. 

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.

• 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)
• Compared to 8TB Ultrastar air drives
—50% more capacity
—52% more power efficient (Watts/TB)
—25% more reliable (MTBF)
• SATA 6Gb/s and SAS 12Gb/s
—12Gb/s SAS compatible with next-gen data centers; backwards compatible with 6Gb/s SAS
• 2.5M hours MTBF2 rating & 5-year limited warranty
• Instant Secure Erase (ISE) & Self-Encrypting Drive (SED) options
• Advanced Format 4Kn and 512e models

• 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

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