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2.2
Formatted capacity
Model
ST92503010AS
ST91603010AS
*One GB equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment
and formatting.
2.2.1
LBA mode
When addressing these drives in LBA mode, all blocks (sectors) are consecutively numbered from 0 to n–1,
where n is the number of guaranteed sectors as defined above.
See Section 4.3.1, "Identify Device command" (words 60-61 and 100-103) for additional information about 48-
bit addressing support of drives with capacities over 137 GB.
2.3
Default logical geometry
Cylinders
Read/write heads
16,383
16
LBA mode
When addressing these drives in LBA mode, all blocks (sectors) are consecutively numbered from 0 to n–1,
where n is the number of guaranteed sectors as defined above.
2.4
Physical organization
Drive model
ST92503010AS
ST91603010AS
2.5
Recording and interface technology
Interface
Recording method
Recording density BPI (bits/in avg)
Track density TPI (tracks/in avg)
2
Areal density (Gb/in
avg)
Spindle speed (RPM) (± 0.2%)
Maximum Internal transfer rate (Mb/s)
I/O data-transfer rate (MB/s max)
Interleave
Cache buffer
Momentus Thin Series SATA Product Manual, Rev. A
Formatted capacity*
250 GB
160 GB
Sectors per track
63
Read/write heads
2
Guaranteed sectors
Bytes per sector
488,397,168
512
312,581,808
Number of discs
1
Serial ATA (SATA)
Perpendicular
1434k
265k
380
5400
1175
300
1:1
8 MB (8,192 KB)
5
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