Seagate 7200.8 PATA, ST3250623A, ST3300631A, ST3400632A Drive specifications for 300 Gbyte models

Table 2:	Drive specifications for 300 Gbyte models
Drive specification		ST3300831A	ST3300631A
Formatted Gbytes (512 bytes/sector)*		300	300
Guaranteed sectors		586,072,368	586,072,368
Bytes per sector		512
Default sectors per track		63
Default read/write heads		16
Default cylinders		16,383
Recording density, BPI		763,000
(bits/in max)
Track density, TPI		120,000
(tracks/in avg.)
Areal density,		91,560
(Mbits/in2 avg)
Spindle speed (RPM)		7,200
Internal data transfer rate (Mbytes/sec max)		95
Sustained data transfer rate OD (Mbytes/sec)		65
I/O data-transfer rate (Mbytes/sec max)		100
ATA data-transfer modes		PIO modes 0–4
supported		Multiword DMA modes 0–2
		Ultra DMA modes 0–5
Cache buffer		8 Mbytes	16 Mbytes
Height (mm max)		26.11 mm (1.028 inches)
Width (mm max)		101.85 mm (4.010 inches)
Length (mm max)		146.99 mm (5.787 inches)
Weight (max)		635 grams (1.39 lb.)
Average latency (msec)		4.16
Power-on to ready (sec max)		10.0 sec
Standby to ready (sec max)		10.0 sec
Track-to-track seek time (msec typical)		0.8 (read), 1.0 (write)
Average seek, read (msec typical)		<11.0
Average seek, write (msec typical)		<12.0
Startup current (typical) 12V (peak)		2.8 amps
Seek power (typical)		12.4 watts
Read/write power (typical)		12.8 watts
Idle mode (typical)		7.2 watts
Standby mode (typical)		0.8 watts
Sleep mode (typical)		0.8 watts
Voltage tolerance		5V ± 5%
(including noise)		12V ± 10%
Ambient		0° to 60°C (operating)
temperature		–40° to 70°C (nonoperating)
Temperature gradient		20°C (operating)
(°C per hour max)		30°C (nonoperating)
Relative humidity		5% to 90% (operating)
		5% to 95% (nonoperating)
Relative humidity gradient		30% per hour max
Wet bulb temperature		37.7 (operating)
(°C max)		40 (nonoperating)
Altitude, operating		–60.96 m to 3,048 m
		(–200 ft. to 10,000+ ft.)

6 Barracuda 7200.8 PATA Product Manual, Rev. F