Seagate ST9160821AS, ST980811AS, ST960813AS 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 ST9160821AS, ST9120822AS, ST9100828AS, ST980811AS, ST960813AS, and ST940814AS 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
Drive specification		ST9160821AS	ST9120822AS	ST9100828AS	ST980811AS	ST960813AS	ST940814AS
Formatted Gbytes		160	120	100	80	60	40
(512 bytes/sector)*
Guaranteed sectors		312,581,808	234,441,648	195,371,568	156,301,488	117,210,240	78,340,160
Bytes per sector		512
Physical read/write heads		4	3	3	2	2	1
Discs		2	2	2	1	1	1
Cache (Mbytes)		8
Recording density in BPI		870k
(bits/inch max)
Track density TPI (tracks/inch max)		150k
Areal density (Gbits/inch2 max)		132
Spindle speed (RPM)		5,400
Internal transfer rate		352
(Mbits/sec max)
I/O data transfer rate		150
(Mbytes/sec max)
ATA data-transfer modes supported		SATA 1.0, Serial ATA Revision 2.5
		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 (2.75 +/- 0.0098 inches)
Length (max)		100.50 +/- 0.25 mm (3.957 +/- 0.010 inches)
Weight (typical)		100 grams (0.22 lb)			96 grams (0.21 lb)
Average latency (msec)		5.6
Power-on to ready (sec typical)		3.0
Standby to ready (sec typical)		3.0
Track-to-track seek time		1.0 (read), 1.5 (write)
(msec typical)

Momentus 5400.3 SATA Product Manual, Rev. D 3