Seagate ST9120310AS, Product Manual

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Momentus 5400.5 SATA Product Manual, Rev. B 3
2.0 Drive 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
ST9320320AS, ST9250320AS, ST9200321AS, ST9160310AS, ST9160310ASG, ST9120310AS,
ST9120310ASG, ST980310AS and ST980310ASG models.
2.1 Specification 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 ST9320320AS ST9250320AS ST9200321AS
ST9160310AS
ST9160310ASG
ST9120310AS
ST9120310ASG
ST980310AS
ST980310ASG
Formatted Gbytes
(512 bytes/sector)*
320 250 200 160 120 80
Guaranteed sectors 625,142,448 488,397,168 390,721,968 312,581,808 234,441,648 156,301,488
Bytes per sector 512
Physical read/write heads 4 4 or 3 3 2 2 1
Discs 2 2 2 1 1 1
Cache (Mbytes) 8
Recording density in BPI
(bits/inch avg)
1,337k
Track density TPI (tracks/inch avg) 190k
Areal density (Gbits/inch
2
avg) 254
Spindle speed (RPM) 5,400
Average latency (msec) 5.6
Internal transfer rate
(Mbits/sec max)
830
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 (2.75 +/- 0.0098 inches)
Length (max) 100.5 +/- 0.25 mm (3.957 +/- 0.010 inches)
Weight (max) 98.8 grams (0.218 lb) 93.5 grams (0.206 lb)
Power-on to ready (sec typical) 3.4
Standby to ready (sec typical) 3.2