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Ultrastar DC HC520

Extreme Capacity

12TB CMR HDD for hyperscale, cloud, and enterprise storage

Areal Density Leadership

Energy-Assisted Magnetic Recording technology, Triple State Actuator and 6th generation product with HelioSeal technology on a 9-disk platform

TCO

Cost-optimized configurations for every important capacity point

Features

  • High Capacity for Massive Data and Lower Total Cost of Ownership
  • Solves TCO Challenges
  • Low Power – Up to 58% lower idle W/TB than 8TB Ultrastar air-filled drives
  • More Reliable – 25% higher MTBF rating than air-filled HDDs
  • FIPS & TAA compliant model available (please indicate in quote inquiry)



Driving Up Capacity and Driving Down TCO for Cloud and Hyperscale Data Centers

The breadth and depth of Big Data is driving the universal need for higher capacities across a broad spectrum of applications and workloads. Laying the foundation for a worry-free data center, Western Digital delivers the capacity to conquer the data explosion with the Ultrastar DC HC500 series of hard drives. Built using HelioSeal technology, the industry’s only fifth-generation helium platform, the DC HC500 series is designed for public and private cloud environments, where storage density, Watts/TB and $/TB are critical for creating the most cost-efficient infrastructure. HelioSeal technology is key to achieving higher drive capacities, greater reliability ratings and extreme power efficiency. The result is a lower Total Cost of Ownership (TCO) for our cloud and enterprise customers.



SATA
SAS
General
Interface
SATA 6Gb/s
SAS 12Gb/s
Capacity1
12TB
12TB
Format2: Sector size(bytes)2
4Kn:

4096
4096, 4112, 4160, 4224
512e:

512
512, 520, 528
Performance
Data Buffer (MB)3
256
256
Rotational Speed (RPM)
7200
7200
Interface transfer rate (MB/s, max)
600
1200
Sustained Transfer Rate
(MiB/s, typical)

243
243
(MB/s, typical)4

255
255
Reliability
Error Rate (non-recoverable, bits read)
1 in 1015
1 in 1015
MTBF (M hours)6
2.5
2.5
Annualized Failure Rate (AFR)
0.35%
0.35%
Load/Unload Cycles (at 40ºC)
600,000
600,000
Availability (hrs/day x days/week)
24x7
24x7
Limited Warranty
5 years
5 years
Acoustics
Idle/Operating (Bels, typical)
2.0/3.6
2.0/3.6
Power
Requirement
+5 VDC, +12VDC
+5 VDC, +12VDC
Operating (W)7
6.9
10.1
Idle (W)8
5.0
6.1
Physical Size
Z-Height (mm)
26.1
26.1
Dimensions (width x depth, mm)
101.6 (+/-0.25) x 147
101.6 (+/-0.25) x 147
Weight (g, max)
660
660
Environmental (operating)
Ambient Temperature
5º to 60º C
5º to 60º C
Shock (half-sine wave, 2ms, G)
70
70
Vibration-Operating (G RMS, 5 to 500 Hz)
0.67 (XYZ)
—
Environmental (non-operating)
Ambient Temperature
-40º to 70º C
-40º to 70º C
Shock (half-sine wave, G)
300 (2 ms)/ 150 (11ms)
300 (2 ms)/ 150 (11ms)
Vibration-Operating (G RMS, 5 to 500 Hz)
1.04 (XYZ)
1.04 (XYZ)

Disclosures

1: 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.
2: Advanced Format drive: 4K (4096-byte) physical sectors.
3: Portion of buffer capacity used for drive firmware.
6: 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.
7: SATA models: 8K Queue Depth = 1 @ 40 IOPS, SAS models: 4K Queue Depth = 4 @ Max IOPS.
8: Idle specification is based on use of Idle_A.



Highlights

  • Up to 18TB capacity in a standard 3.5-inch form factor
  • Conventional Magnetic Recording (CMR) technology works seamlessly in capacity enterprise environments
  • Reliable, field-proven design across five generations
  • HelioSeal design delivers power efficiency (Watts/TB)
  • 2.5M hours MTBF rating and a 5-year limited warranty

Applications and Workload

  • 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 Apache Hadoop® for Big Data Analytics
  • Surveillance Analytics