Seagate ST9320325ASG, ST9500325ASG manual Drive specifications, Specification summary table

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 the Momentus 5400.6 SATA models.

2.1Specification summary table

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

Table 1:	Drive specifications
		ST9500325AS	ST9320325AS	ST9250315AS	ST9160314AS
Drive specification		ST9500325ASG	ST9320325ASG	ST9250315ASG	ST9160314ASG	ST9120315AS
Formatted Gbytes (512 bytes/sector)*		500	320	250	160	120
Guaranteed sectors		976,773,168	625,142,448	488,397,168	312,581,808	234,441,648
Bytes per sector		512
Physical read/write heads		4	3	2	2	1
Discs		2	2	1	1	1
Cache (Mbytes)		8
Recording density in BPI (bits/inch avg)		1,490k
Track density TPI (tracks/inch avg)		265k
Areal density (Gbits/inch2 avg)		394
Spindle speed (RPM)		5,400
Average latency (msec)		5.6
Internal transfer rate (Mbits/sec max)		1,175
I/O data transfer rate (Mbytes/sec max)		300
ATA data-transfer modes supported		SATA 1.0, Serial ATA Revision 2.6
		PIO modes 0–4
		Multiword DMA modes 0–2
		Ultra DMA modes 0–6
Height (max)		9.5 +/- 0.2 mm (0.374 +/- .0078 inches)
Width (max)		69.85 mm +/- 0.25 mm (2.75 +/- 0.0098 inches)
Length (max)		100.35 + 0.35 / - 0.25 mm (3.957 + 0.079 / - 0.0098 inches)
Weight (max)		98.8 grams (0.218 lb)		93.5 grams (0.206 lb)
Power-on to ready (sec typical)		3.6
Power-on to ready (sec max)		3.8
Standby to ready (sec typical)		1.8
Standby to ready (sec max)		2
Track-to-track seek time, read (msec typical)		1
Average seek, read (msec typical)		14

Momentus 5400.6 SATA Product Manual, Rev. A 3