Western Digital | ASA Computers

Overview

The relentless growth of data means organizations must find ways to efficiently store ever more data. The Ultrastar DC HC680 28TB¹ HDD with improved OptiNAND technology is the next step in high-capacity hard drives, allowing data centers to maximize their storage, especially in footprint- and power-constrained environments.

Specifications

Features

New, improved OptiNAND technology enables more efficient storage footprint
Energy-assisted magnetic recording (eAMR), triple-stage actuator (TSA), and HelioSeal for high capacity with low power
ArmorCache improves performance and provides enterprise power loss protection

General

Interface

SATA: 6Gb/s

Capacity¹

28TB

Format: Sector size³ (bytes)

512e: 512

Performance

Data Buffer⁴ (MB)

512

Rotational Speed (RPM)

7200

Sustained Transfer Rate⁵

MB/s, typical: 265
MiB/s, typical: 253

Reliability

Error Rate (non-recoverable, bits read)

1 in 10¹⁵

MTBF (M hours)²

2.5

Annualized Failure Rate (AFR)²

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

Random Read 4KB QD=8 @MAX IOPS (W)

9.4

Idle (W)⁶

5.5

Power consumption efficiency at Idle (Watts/TB)

SATA: 0.20
SAS: 0.20,0.21

Physical Size

Z-Height (mm)

26.1

Dimensions (width x depth, mm)

101.6 (+/-0.254) x 147

Weight (g, max)

670

Environmental (operating)

Temperature⁷

5° to 60° C

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

Vibration-Operating (G RMS, 5 to 500 Hz)

0.7

Environmental (non-operating)

Ambient Temperature

-40° to 70° C

Shock (half-sine wave, G)

200 (2 ms)

Random Vibration (G RMS, 2 to 200 Hz)

1.04

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: 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, typical workload and 40°C device-reported temperature. Derating of MTBF and AFR will occur above these parameters, up to 550TB/year and 60°C (device reported temperature). MTBF and AFR ratings do not predict an individual drive's reliability and do not constitute a warranty.
3: Advanced Format drive: 4K (4096-byte) physical sectors.
4: Portion of buffer capacity used for drive firmware.
5: Based on internal testing; performance may vary depending on host environment, drive capacity, logical block address (LBA), and other factors. 1MiB = 1,048,576 bytes (2²⁰), 1MB = 1,000,000 bytes (10⁶).
6: Idle specification is based on use of Idle_A.
7: 5°C ambient temperature, 60°C device reported temperature.

Ultrastar DC HC680

Overview

Specifications

Disclosure

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