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40 Chapter 1
Dissipation
Startup
current
(peak, max.)
4.7 W4.7 W4.7 W5.0W 5.0W
Seek (avg.) 2.3 W 2.3 W 2.3 W NA NA
Read (avg.) 2.1 W 2.1 W 2.1 W 2.0W 2.0W
Write (avg.) 2.2 W 2.2 W 2.2 W 2.0W 2.0W
Performance
idle (avg.)
1.85 W1.85 W1.85 WNA NA
Active idle
(avg.)
0.85 W 0.85 W 0.85 W 0.85W 0.85W
Low power
idle (avg.)
0.65 W 0.65 W 0.65 W 0.60W 0.60W
Standby
(avg.)
0.25 W 0.25 W 0.25 W 0.2W 0.2W
Sleep 0.1 W 0.1 W 0.1 W 0.1W 0.1W
Power
consump.
efficiency
index (W/
GB)
0.016 0.011 0.008 NA NA
Physical size
Height (mm) 9.5 9.5 9.5 9.5 9.5
Width (mm) 70 70 70 70 70
Depth (mm) 100 100 100 100 100
Weight -
typical (g)
95 99 99 102 102
Environmental characteristics
Operating
Ambient
temperature
5 to 55 C 5 to 55 C 5 to 55 C 5 to 55 C 5 to 55 C
Relative
humidity
(non-
condensing)
8% - 90% 8% - 90% 8% - 90% NA NA
Maximum
wet bulb
(non-
condensing)
29.4 C 29.4 C 29.4 C
NA NA
Shock (half
sine wave)
200G/2ms 200G/2ms 200G/2ms 300 G / 2ms,
160G / 1ms
300 G / 2ms,
160G / 1ms
Vibration
(random
(RMS))
0.67 G (5 - 500
Hz)
0.67 G (5 - 500
Hz)
0.67 G (5 - 500
Hz)
NA NA
Swept sine 1 G 0 - P (5 -
500 Hz)
1 G 0 - P (5 -
500 Hz)
1 G 0 - P (5 -
500 Hz)
NA NA
Non-operating
Ambient
temp
-40 to 65 C -40 to 65 C -40 to 65 C -40 to 65 C -40 to 65 C
HGST
°° °° °° °° °°
°°°
°° °° °° °° °°