Seagate ST9320328CS, ST9500323CS 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 Pipeline HD Mini Series SATA models.

2.1Specification summary table

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:	Drive specifications
Drive specification		ST9500323CS	ST9320328CS	ST9250311CS	ST91603110CS
Formatted Gbytes (512 bytes/sector)*		500	320	250	160
Guaranteed sectors		976,773,168	625,142,448	488,397,168	312,581,808
Bytes per sector		512
Physical read/write heads		4	3	2
Discs		2		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 default / 150 available via Seagate specific SCT command
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)		110 grams (0.243 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
Full-stroke seek, read (msec max)		30
Startup current, +5V (max)		1.0 amp
Seek power (typical)		1.54 watts

Pipeline HD Mini Series SATA Product Manual, Rev. E 3