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Momentus 5400.6 SATA Product Manual, Rev. E 9
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 Gbytes.
2.3 Default logical geometry
Cylinders Read/write heads Sectors per track
16,383 16 63
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 Read/write heads Number of discs
ST9500325AS, ST9500325ASG and ST9400326AS 4 2
ST9320325AS and ST9320325ASG 3 2
ST9250315AS, ST9250315ASG, ST9160314AS,
ST
9160301AS and ST9160314ASG
2 1
ST9120315AS, ST9120315ASG, ST980313AS and
ST
980313ASG
1 1
2.5 Recording and interface technology
ST9500325AS, ST9500325ASG, ST9400326AS,
ST9320325AS, ST9320325ASG, ST9250315AS,
ST9250315ASG ST9160314AS, ST9160314ASG,
ST9120315AS, ST9120315ASG, ST980313AS,
ST980313ASG
ST9160301AS
Interface Serial ATA (SATA)
Recording method Perpendicular
Recording density BPI (bits/inch avg) 1,490k 1,238k
Track density TPI (tracks/inch avg) 265k 210k
Areal density (Gbits/inch
2
avg) 394 269
Spindle speed (RPM) (± 0.2%) 5,400
Maximum Internal transfer rate (Mbits/sec) 1,175
I/O data-transfer rate (Mbytes/sec max) 300
Interleave 1:1
Cache buffer 8 Mbytes (8,192 kbytes)