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Ultrastar DC HC560 Series

  • Highest Capacity for Exponential Data Growth
  • Meets Modern Data Center Reliability Requirements
  • Optimized for high-density data centers
  • Security And Encryption Options
  • Enterprise Class - 2.5M hours (projected) MTBF rating with 5-year limited warranty



Reimagined HDD For Exponential Data Growth

When it comes to cost-effective storage of data at scale, hard disk drives (HDDs) continue to play a central role. HDDs deliver the capacity, performance and reliability needed to store vast amounts of data today and well into the future. Western Digital has developed flash-enhanced drives with OptiNAND™ technology by vertically integrating NAND flash with their HDDs. OptiNAND integrates an iNAND® Universal Flash Storage (UFS) Embedded Flash Drive (EFD) with traditional spinning disk media, and incorporates innovative changes to the firmware algorithm and system-on-a-chip (SoC). The drives can now work smarter, with enhanced firmware algorithms taking advantage of expanded metadata that has been offloaded to the iNAND, enabling more tracks per inch (TPI) with resulting increased area density.



SATA
General
Interface
SATA 6Gb/s
Capacity1
20TB
Format: Sector size (bytes)2
4Kn:

512e:

4096

512
Performance
Data Buffer (MB)3
512
Rotational Speed (RPM)
7200
Sustained Transfer Rate
(MiB/s, typical)

(MB/s, typical)4

257/250

269/262
Reliability
Error Rate (non-recoverable, bits read)
1 in 1015
MTBF (M hours, projected)5
2.5
Annualized Failure Rate (AFR, projected)
0.35%
Load/Unload Cycles (at 40°C)
600,000
Availability (hrs/day x days/week)
24x7
Limited Warranty (yrs)
5 years
Acoustics
Idle/Operating (Bels, typical)
2.0/3.2
Power
Requirement
+5 VDC, +12VDC
Operating (W)6
7.0
Idle (W)7
6.0
Power consumption efficiency at Idle (Watts/TB) 20TB
0.3
Physical Size
Z-Height (mm)
26.1
Dimensions (width x depth, mm)
101.6 (+/-0.25) x 147
Weight (g, max)
690
Environmental (operating)
Ambient Temperature
5° to 60° C
Shock (half-sine wave, 2ms, G)
50
Vibration-Operating (G RMS, 5 to 500 Hz)
0.67 (XYZ)
Environmental (non-operating)
Ambient Temperature
-40° to 70° C
Shock (half-sine wave, G)
250 (2 ms)
Random Vibration (G RMS, 2 to 200 Hz)
1.04 (XYZ)

Disclosures

1: One MB is equal to one million bytes, one GB is equal to one billion bytes and one TB equals 1,000GB (one trillion bytes). Actual user capacity may be less due to operating environment.
2: Advanced Format drive: 4K (4096-byte) physical sectors.
3: Portion of buffer capacity used for drive firmware.
4: Based on internal testing; performance may vary depending on host environment, drive capacity and other factors. 1MiB = 1,048,576 bytes (220), 1MB = 1,000,000 bytes (106).
5: Projected values. Final MTBF and AFR specifications will be based on a sample population and are estimated by statistical measurements and acceleration algorithms under typical operating conditions, workload 220TB/year and temperature 40C. Derating of MTBF and AFR will occur above these parameters, up to 550TB writes per year and 60°C ambient (65°C device temp). MTBF and AFR ratings do not predict an individual drive’s reliability and do not constitute a warranty.
6: SATA models: Random RW 50/50 8KB QD=1, SAS models: Random RW 50/50 4KB QD=4.
7:Idle specification is based on use of Idle_A.



Highlights

  • 20TB capacity in a standard 3.5-inch form factor
  • ePMR & CMR technology works with all capacity enterprise applications & environments
  • OptiNAND for highest capacities
  • Reliable, field-proven, 7th generation HelioSeal design delivers outstanding power efficiency
  • Industry-leading HDD technologies; OptiNAND, EAMR, TSA, HelioSeal

Applications and Workload

  • Cloud and 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