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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
ST92503010AS and ST91603010AS 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
Formatted GB (512 bytes/sector)*
Guaranteed sectors
Bytes per sector
Physical read/write heads
Discs
Cache (MB)
Recording density in BPI (bits/in avg)
Track density TPI (tracks/in avg)
2
Areal density (Gb/in
avg)
Spindle speed (RPM)
Average latency (ms)
Internal transfer rate (Mb/s max)
I/O data transfer rate (MB/s max)
ATA data-transfer modes supported
Height (max)
Width (max)
Length (max)
Weight (max)
Power-on to ready (sec typical)
Standby to ready (sec typical)
Track-to-track seek time, read (ms typical)
Average seek, read (ms typical)
Full-stroke seek, read (ms)
Startup current, +5V (max)
Seek power (typical)
Momentus Thin Series SATA Product Manual, Rev. A
ST92503010AS
250
488,397,168
512
2
1
8
1434k
265k
380
5400
5.6
1175
300
SATA 1.0, Serial ATA Revision 2.6
PIO modes 0–4
Multiword DMA modes 0–2
Ultra DMA modes 0–6
7.0 mm (0.276 in)
70.10 mm (2.76 in)
100.55 mm (3.959 in)
<92.0 g (<0.203 lb)
3.4
1.8
1
14
30 (max)
1.0A
1.54W
ST91603010AS
160
312,581,808
3
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