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Momentus 5400.3 PATA Product Manual, Rev. C
7
Table 1: Specifications for 60 and 40 Gbyte models
Drive specification ST960815A ST940815A
Formatted Gbytes (512 bytes/sector)* 60 40
Guaranteed sectors 117,410,240 78,140,160
Bytes per sector 512
Physical read/write heads 2 1
Discs 1
Cache (Mbytes) 8
Recording density, BPI (bits/inch typical) 835k
Track density, TPI (tracks/inch typical) 150k
Areal density (Gbits/inch
2
max) 132
Spindle speed (RPM) 5,400
Internal data transfer rate (Mbits/sec max) 352
I/O data-transfer rate (Mbytes/sec max) 100
ATA data-transfer modes supported
PIO modes 0–4
Multiword DMA modes 0–2
Ultra DMA modes 0–5
Height 9.5 +/-0.2 mm (0.374 +/-.008 inches)
Width 69.85 +/-0.25 mm (2.750 +/-0.010 inches)
Length 100.50 +/-0.25 mm (3.957 +/-0.010 inches)
Weight (typical) 98 grams (0.216 lb)
Average latency (msec) 5.6
Power-on to ready (sec typical) 3.0
Standby to ready (sec typical) 3.0
Track-to-track seek time (msec typical) 1.0 (read), 1.5 (write)
Average random seek , write (msec typical) 13.0
Average random seek, read (msec typical) 11.0
Average random seek, (msec typical) 12.5
Full-stroke seek (msec) 22 (typical); 24 (max)
Startup current 5V (typical) 1.0 amps
Seek power (typical) 2.0 watts
Read/write power (typical) Read: 2.0 watts; Write: 1.8 watts
Idle mode (typical, low power) 0.8 watts
Standby mode 0.2 watts (typical)***
Sleep mode 0.2 watts (typical)***
Voltage tolerance (including noise) 5V ± 5%
Ambient temperature 0° to 60°C (operating), –32° to 70°C (nonoperating)
Temperature gradient
(°C per hour max, noncondensing)
20°C (operating)
30°C (nonoperating)
Relative humidity
(noncondensing)
5% to 90% (operating)
5% to 95% (nonoperating)
Relative humidity gradient 30% per hour max
Wet bulb temperature (°C max) 30°C (operating)
38°C (nonoperating)
Altitude, operating –304.8 m to 3,048 m (–1000 ft to 10,000 ft)
Altitude, nonoperating (below mean sea level) –304.8 m to 12,192 m (–1,000 ft to 40,000 ft) max
Shock, operating (Gs max at 2 msec) 350
Shock, nonoperating (Gs max at 2 msec) 800