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Momentus Thin Series 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
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 ST92503010AS ST91603010AS
Formatted GB (512 bytes/sector)* 250 160
Guaranteed sectors 488,397,168 312,581,808
Bytes per sector 512
Physical read/write heads 2
Discs 1
Cache (MB) 8
Recording density in BPI (bits/in avg) 1434k
Track density TPI (tracks/in avg) 265k
Areal density (Gb/in
2
avg) 380
Spindle speed (RPM) 5400
Average latency (ms) 5.6
Internal transfer rate (Mb/s max) 1175
I/O data transfer rate (MB/s 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) 7.0 mm (0.276 in)
Width (max) 70.10 mm (2.76 in)
Length (max) 100.55 mm (3.959 in)
Weight (max) <92.0 g (<0.203 lb)
Power-on to ready (sec typical) 3.4
Standby to ready (sec typical) 1.8
Track-to-track seek time, read (ms typical) 1
Average seek, read (ms typical) 14
Full-stroke seek, read (ms) 30 (max)
Startup current, +5V (max) 1.0A
Read/write power (typical) Read: 1.4W; Write: 1.78W