Western Digital Ultrastar DC HC310 6TB (Data Center Internal Hard Drive)

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Economics and Access Speed: Key Requirements

for Low Capacity HDDs in the Data Center
As the industry evolves to develop purpose-built solutions for growing data storage
requirements, IT managers continue to rely on lower capacity drives that are
economical to acquire, yet deliver quick and reliable data access for traditional data
center applications. Ultrastar®
DC HC310* is a low-capacity HDD, with 6TB and 4TB
offerings, that helps address economic and access requirements of many traditional
IT workloads. Low capacity drives also help address architecture limitations. Part of
our mid-capacity DC HC300 series, the Ultrastar DC HC310 is designed for traditional
storage and server applications as well as distributed and scalable computing,
including block and fi le storage architectures, providing fast 7,200 RPM performance
and lower acquisition cost to help ease budget constraints. Ultrastar DC HC310 is
offered with either 6Gb/s SATA or 12Gb/s SAS interface in a choice of 512e or 4Kn
formats. A 512n option is also available on 4TB models to support legacy systems with
native 512-byte block sizes.

Technology Innovation Delivers Efficiency and

Performance for Traditional and Legacy Systems
Ultrastar DC HC310 is based on a new 4-disk air platform design that uses conventional
magnetic recording (CMR) technology in a 3.5-inch large form factor. Compared to the
prior generation, Ultrastar 7K6000, the DC HC310 delivers a 12% performance boost
and uses slightly larger-diameter media. It features a second-generation, dual-stage
micro actuator to enhance head positioning accuracy for better drive performance.
Write performance gains are also supported by Western Digital’s media cache
architecture, a disk-based caching technology that provides a large cache area on
the disk, which also improves reliability and data integrity during unexpected power
loss. Finally, the addition of fl ash-based non-volatile cache (NVC) on both SATA and
SAS models helps improve write performance. The Ultrastar DC HC310 also includes
a Rebuild Assist feature, which helps dramatically reduce RAID rebuild times and
maintain system performance during the rebuild process. Learn more in our Rebuild
Assist technical brief.

Data Security with Trusted Quality, Reliability

Compliance and privacy requirements drive the need for increased data security.
Ultrastar DC HC310 helps protect data from unauthorized use by offering security and
encryption options. SAS models offer hardware-based encryption options, including
a Trusted Computing Group (TCG) Enterprise_A, TCG with FIPS 140–2 certifi cation,
Level 2. The Ultrastar DC HC310 extends Western Digital’s long-standing tradition of
reliability leadership with a 2M-hour MTBF²
rating and a 5-year limited warranty.


• Excellent random and sequential performance
• 6TB and 4TB capacity points support traditional
IT systems
• Sustained transfer rate up to 255MB/s (512e/4Kn
models); 233MB/s (512n models)
• Choice of 12Gb/s SAS or 6Gb/s SATA
• Advanced Format 4Kn and 512e models up to
6TB; 512n formatting available on 4TB to support
legacy systems
• Self-Encrypting Drive (TCG SAS) options
• 5-year limited warranty

Applications & Workloads

• Distributed fi le systems, like Apache Hadoop®
to support Big Data analytics
• Direct & Network Attached Storage
• RAID arrays
• Legacy applications requiring 512n format (4TB)

Features & Benefits

Capacity • 6TB & 4TB
• Advanced Format up to 6TB
• 512n format available on 4TB
• Lower capacity points needed for traditional IT workloads and applications
• Enables higher capacities and reliability
• Compatibility with legacy systems
Performance • Non-volatile cache (NVC)
• Up to 255MB/s transfer rate (512e/4Kn);
233MB/s transfer rate (512n)
• Improved write performance and write splice protection
• 12% faster than prior generation
Reliability • Dual-stage Micro Actuator
• 2M hours MTBF and 0.44% AFR
• 5-year limited warranty
• Better head positioning and rotational vibration robustness
• One of the highest reliability ratings for air-fi lled Capacity Enterprise HDDs

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