System specifications 89
SATA hard drives
Item Description
Model WD Caviar SE WD1600JS Seagate Barracuda
ST3160815AS
Form factor 3.5-inch 3.5-inch
Capacity 160,041 MB 160,041 MB
Used sectors per drive 312,581,808 312,581,808
Bytes per sector 512 512
Rotational speed 7,200 rpm 7,200 rpm
Cache 8 MB 8 MB
Average latency 4.20 ms 4.16 ms
Seek times (average)
Read
Write
Track to track
Full-stroke
8.9 ms
10.9 ms
2.0 ms
21 ms
<11.0 ms
<12.0 ms
<1.0 ms
—
Maximum transfer rate (buffer to host) 3 Gb/s 3 Gb/s
Physical specifications
Height
Length
Width
Weight (typical)
26.1 mm (1.028 in.)
147 mm (5.787 in.)
101.6 mm (4.0 in.)
0.60 kg (1.32 lb)
19.99 mm (.787 in.)
147 mm (5.787 in.)
101.6 mm (4.0 in.)
0.38 kg (.838 lb)
Operating conditions
Temperature
Humidity (non-condensing)
5–55°C (41–131°F)
5–95% RH
0–60°C (32–140°F)
5–90% RH
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