Ổ cứng máy chủ Hitachi 3.5 HGST ULTRASTAR A7K4000 (4TB)
Model(s) HDS724040ALE640
Interface SATA 6Gb/s
Capacity (GB) 4TB
Sector size (variable, Bytes/sector) 512e
Max areal density (Gbits/sq. in.) 446
Performance
Data buffer (MB) 64
Rotational Speed (RPM) 7200
Media transfer rate (Mbits/sec, max) 1638
Interface transfer rate (MB/sec, max) 600
Reliability
Error Rate (non-recoverable, bits read) 1 in 1014
Load/Unload Cycles 600,000
Availability (hrs/day x days/wk) 24x7
Acoustics
Idle (Bels) 2.9 (typical)
Power
Requirement +5 VDC (+/-5%) +12 VDC (+10%/-8%)
Requirement: Start-up (W, peak, max) 1.2 (+5V) & 1.5 (+12V) (amps)
Performance Idle 6.9W
Physical size
Z-height (mm) 26.1
Dimensions (width x depth, mm) 101.6 x 147
Weight (g, max) 690
Environmental (operating)
Ambient temperature 5º to 60º C
Relative Humidity 8% to 90% (non-condensing)
Shock (half-sine wave) 70 (G 2ms)
Vibration 0.67 (XYZ)(G RMS 5 to 500 Hz)
Environmental (non-operating)
Ambient temperature -40º to 70º C
Relative Humidity 5% to 95% (non-condensing)
Shock (half-sine wave) 300 (1ms)
Vibration 1.04 (XYZ)(G RMS 2 to 200 Hz) |