Seagate ST930218A, ST980829A, ST960812A, ST950814A Specifications for 60, 50, 40, and 30 GB models

Table 1:	Specifications for 60, 50, 40, and 30 GB models
Drive specification		ST960812A	ST950814A	ST9402112A	ST930218A
Formatted Gbytes (512 bytes/sector)*		60	50	40	30
Guaranteed sectors		117,210,240	97,692,174	78,140,160	58,605,120
Bytes per sector		512
Physical read/write heads		2	2	2	1
Discs		1	1	1	1
Cache (Mbytes)		8
Recording density, BPI (bits/inch typical)		778k
Track density. TPI (tracks/inch typical		126k
Areal density (Gbits/inch2 max)		98.2
Spindle speed (RPM)		4,200 RPM-class performance (actual spin speed: 5,400 RPM)
Internal data transfer rate OD (Mbytes/sec max)		37
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		100.2 +/–0.25 mm (3.945 +/–0.010 inches)
Weight (typical)		100 grams (0.22 lb)
Average latency (msec)		5.6
Power-on to ready (sec typical)		3.5
Standby to ready (sec typical)		3.0
Startup current 5V (typical)		1.0 amps
Track-to-track seek time (msec typical)		1.0 (read), 1.5 (write)
Average seek time (msec typical)		12.5
Average seek, read (msec typical)		12.5
Average seek, write (msec typical)		14.5
Full-stroke seek (msec)		22 (typical); 24 (max)
Seek power (typical)		2.00 watts
Read/write power (typical)		Read: 1.80 watts; Write: 1.80 watts
Idle mode (low power, typical)		0.80 watts
Standby mode		0.26 watts (typical)***
Sleep mode		0.26 watts (typical)***
Voltage tolerance (including noise)		5V ± 5%
Ambient temperature		5° to 55°C (operating)
		–40° to 70°C (nonoperating)
Temperature gradient		20°C (operating)
(°C per hour max, noncondensing)		30°C (nonoperating)
Relative humidity		5% to 90% (operating)
(noncondensing)		5% to 95% (nonoperating)
Relative humidity gradient		30% per hour max
Wet bulb temperature (°C max)		30°C (operating)
		40°C (nonoperating)
Altitude, operating		–304.8 m to 3,048 m (–1000 ft to 10,000 ft)
Altitude, nonoperating (below mean sea level, max)		–304.8 m to 12,192 m (–1,000 ft to 40,000 ft)
Shock, operating (Gs max at 2 msec)		250

Momentus 4200.2 Product Manual, Rev. C 5