Western Digital Ultrastar DC HC555 20TB SATA 6Gb/s 3.5" Data Center HDD
WUH722020CLE604Available to order
Western Digital Ultrastar DC HC555 data center SATA HDD, 20TB in a 3.5-inch helium-sealed form factor on a 6 Gb/s SATA interface. Spins at 7200 RPM with a 512MB cache and sustained transfer rates up to 285 MB/s, using CMR recording with energy-assisted magnetic recording (EAMR). Rated for up to 550TB/year workload with a 2.5 million hour MTBF (0.35% AFR).
- Interface
- SATA 6 Gb/s
- Form Factor
- 3.5"
- Recording
- CMR (EAMR)
- Air/Helium
- Helium
- Rotational Speed
- 7200 RPM
- Cache
- 512MB
- Sector Format
- 512e
- Security Option
- Base (SE)
- Capacity
- 20TB
- Heads
- 18
- Disks
- 9
- Areal Density
- 1137 Gbit/in²
- Sectors (512e)
- 39,063,650,304
- Sustained Transfer
- 285 MB/s max
- Avg Latency
- 4.16 ms
- Interface Rate
- 6 Gb/s
- Max Data Rate
- 2631 Mbps
- Recording Density
- 2256 KBPI
- Track Density
- 500 KTPI
- MTBF
- 2.5M hours
- AFR
- 0.35%
- UBER
- <1 in 10^15 bits
- Workload Rate
- 550 TB/yr
- Load/Unload
- 600K cycles
- Start/Stop
- 50,000 cycles
- Availability
- 24x7
- Operating
- 6.4W typical
- Idle
- 5.3W
- Idle Efficiency
- 0.27 W/TB
- Standby
- 1.1W
- Voltage
- +5V, +12V
- Idle (typ)
- 2.0 Bels
- Idle (max)
- 2.5 Bels
- Operating (typ)
- 3.2 Bels
- Operating (max)
- 3.4 Bels
- Operating Temp
- 5-60°C
- Non-Op Temp
- -40 to 70°C
- Op Humidity
- 8-90% non-cond
- Shock (Op)
- 50G 2ms
- Shock (Non-Op)
- 250G 2ms
- Vibration (Op)
- 0.7G RMS
- Non-Op Vibration
- 1.04G RMS
- Dimensions
- 147x101.6x26.1mm
- Weight
- 690g
Drive
Capacity
Performance
Reliability
Power
Acoustics
Environment
Priceavailable on request
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