Western Digital | ASA Computers

OVERVIEW

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.

Features

Higher Capacity

20TB allow more cost-efficient storage in standard 3.5" form factor

Leading Technology

OptiNAND, EAMR, TSA, HelioSeal

Reliability

Performance-optimized for heavy application workloads & designed to handle workloads up to 550TB per year.

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

High Capacity

20TB HDDs allow more cost-efficient storage in the same footprint

Industry-first technologies

OptiNAND, energy-assisted magnetic recording (EAMR), triple-stage actuator (TSA) and HelioSeal enable the highest capacities with low power

Data center workloads, reliability, and quality

Performance-optimized for heavy application workloads and are designed to handle workloads up to 550TB² per year. Dependability and reliability with up to 2.5M hours MTBF (projected). 5-year limited warranty

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)

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)

Disclosure

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.

Ultrastar DC HC560

OVERVIEW

Features

Higher Capacity

Leading Technology

Reliability

Request a quick Western Digital's Quote

Highlights

Applications and Workload

High Capacity

Industry-first technologies

Data center workloads, reliability, and quality

Disclosure