Delivering Economics and Access Speed to Data Center Applications and Workloads

As the industry evolves to develop purpose-built solutions for growing data storage requirements, IT managers continue to rely on mid-range capacity drives that are economical to acquire, yet deliver quick and reliable data access for traditional data center applications. Designed to handle workloads up to 550TB per year, the Ultrastar DC HC300 series is a proven air-platform design that delivers up to 8TB of capacity to help address the economic and access-density requirements of many data center workloads. Ideal for storage and server applications, as well as distributed and scalable computing (including block and file storage architectures), the Ultrastar DC HC300 series provides fast 7,200 RPM performance and lower acquisition cost to help ease budget constraints.


Solves Access Density Challenges

Economical Capacity

4TB, 6TB, and 8TB models for lower acquisition cost

High Performance

Fast data access with 7200 RPM speed, transferring up to 255 MB/s

Drop-In Ready

SAS and SATA options support traditional servers and storage


  • Up to 8TB capacity supports traditional IT systems
  • Excellent random and sequential performance
  • Sustained transfer rate up to 255 MB/s for Advanced Format models
  • Choice of 12 Gb/s SAS or 6 Gb/s SATA
  • Self-Encrypting options (TCG/FIPS available on SAS models)
  • 5-year limited warranty

Applications and Workload

  • Distributed file systems, like Apache™ Hadoop®, to support Big Data analytics
  • Direct-Attached Storage (DAS)
  • Enterprise Network-attached Storage (NAS)
  • RAID Arrays
  • Data centers and cloud computing applications that require higher access density (IOPS/TB)
  • Legacy applications requiring 512n format (4TB)

Ultrastar DC HC300 Series
Product Portfolio

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Ultrastar DC HC320

Ultrastar DC HC310


Higher Capacity

8TB, the highest capacity available in our Ultrastar DC HC300 series

Access Speed

Process data quickly with sustained transfer rates up to 255 MB/s


Enterprise-class 2M hours MTBF with 5-year limited warranty





Format2: Sector size(bytes)



Sustained transfer rate
(MiB/s, typical)
(MB/s, typical)4

Up to 243
Up to 255


Limited Warranty (yrs)



Idle/Operating (Bels, typical)



Power consumption efficiency at Idle

Physical Size

Weight (g, max)


Environmental (Operating)

Environmental (Non-Operating)

Ambient temperature

-40°C to 70°C

Shock (half-sine wave, 2ms, G)


Random Vibration (G RMS 2 to 200 Hz)

1.04 (XYZ)

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One megabyte (MB) is equal to one million bytes, one gigabyte (GB) is equal to 1,000MB (one billion bytes), and one terabyte (TB) is equal to 1,000GB (one trillion bytes) when referring to storage capacity. Accessible capacity will vary from the stated capacity due to formatting, system software, and other factors.


Advanced Format drive: 4K (4096-byte) physical sectors.


Portion of buffer capacity used for drive firmware.


1MiB = 1,048,576 bytes (220), 1MB = 1,000,000 bytes (106).


MTBF and AFR targets are based on a sample population and are estimated by statistical measurements and acceleration algorithms under median operating conditions. MTBF and AFR ratings do not predict an individual drive’s reliability and do not constitute a warranty.


SATA models: 8K Queue Depth = 1 @ 40 IOPS, SAS models: 4K Queue Depth = 4 @ Max IOPS.


Idle specification is based on use of Idle_A.

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