Seagate ST93811A, ST98823A, ST96812A Drive specifications, Specification summary, Specifications

2.0Drive specifications

Unless otherwise noted, all specifications are measured under ambient conditions, at 25°C, and nominal power. For convenience, the phrases the drive and this drive are used throughout this manual to indicate ST9120821A, ST9100824A, ST98823A, ST96812A, ST94813A and ST93811A model drives.

2.1Specification summary

The specifications listed in this table are for quick reference. For details on specification measurement or definition, see the appropriate section of this manual.

Table 1:	Specifications
Drive specification		ST9120821A	ST9100824A	ST98823A	ST96812A	ST94813A	ST93811A
Formatted Gbytes (512 bytes/sec-		120	100	80	60	40	30
tor)
Guaranteed sectors		234,441,648	195,371,568	156,301,488	117,210,240	78,140,160	58,605,120
Bytes per sector		512
Physical read/write heads		4	4	3	2	2	1
Discs		2	2	2	1	1	1
Cache (Mbytes)		8
Recording density,		778k
BPI (bits/inch typical)
Track density.		126k
TPI (tracks/inch typical)
Areal density (Gbits/inch2 max)		98.2
Spindle speed (RPM)		5,400
Internal data transfer rate OD		42
(Mbytes/sec max)
I/O data-transfer rate		100
(Mbytes/sec max)
ATA data-transfer		PIO modes 0–4
		Multiword DMA modes 0–2
modes supported
		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		1.0 (read), 1.5 (write)
(msec typical)

Momentus 5400.2 PATA Product Manual, Rev. B 3