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2.0
Drive specifications
Unless otherwise noted, all specifications are measured under ambient conditions, at 25°C, and nominal
power.
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 2:
Drive specifications
Drive specification
Formatted Gbytes (512 bytes/sector)*
Guaranteed sectors
Bytes per sector
Physical read/write heads
Discs
Cache (Mbytes)
Recording density in BPI (bits/inch max)
Track density TPI (tracks/inch max)
2
Areal density (Gbits/inch
max)
Spindle speed (RPM)
Internal transfer rate (Gbits/sec max)
I/O data transfer rate (Gbits/sec max)
ATA data-transfer modes supported
Height (max)
Width (max)
Length (max)
Weight (typical)
Average latency (msec)
Power-on to ready (sec typical)
Standby to ready (sec typical)
Track-to-track seek time, read (msec typical)
Average seek, read (msec typical)
Average seek, write (msec typical)
Startup current, +5V (max)
Seek power (typical)
Momentus 7200 FDE.1 SATA Product Manual, Rev. A
ST9320424AS
ST9250424AS
ST9320424ASG
ST9250424ASG
320
250
625,142,448
488,397,168
512
4
3
2
2
16
1,334k
190k
253
7.200
1.1
3.0
SATA 1.5/3.0, Serial ATA Revision 2.6
PIO modes 0–4
Multiword DMA modes 0–2
Ultra DMA modes 0–6
9.5 +/- 0.2 mm (0.374 +/- .0078 inches)
69.85 +/- .249 mm (2.75 +/- .0098 inches)
100.33 +/- 0.25 mm (3.95 +/- .010 inches)
110 grams (0.238 lb)
4.17
4.0
3.0
1.0
11.0
13.0
1.0 amps
2.3 watts
ST9160414AS
ST9120414AS
ST9160414ASG
ST9120414ASG
160
120
312,581,808
234,441,648
2
2
1
1
105 grams (0.227 lb)
ST980414ASG
80
156,301,488
1
1
5
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