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Barracuda 7200.7 Product Manual, Rev. E 5
2.2 Formatted capacity
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 4.1.2, "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
2.4 Physical organization
Model
Formatted
capacity
Guaranteed
sectors
Bytes per sector
ST3160021A
ST3160023A
160 Gbytes 312,581,808 512
ST3120022A
ST3120026A
120 Gbytes 234,441,648 512
ST380011A
ST380013A
80 Gbytes 156,301,488 512
ST360014A 60 Gbytes 117,231,408 512
ST340014A 40 Gbytes 78,165,360 512
Cylinders Read/write heads Sectors per track
16,383 16 63
Model Read/write heads Number of discs
ST3160021A
ST3160023A
4 2
ST3120022A
ST3120026A
3 2
ST380011A
ST380013A
2 1
ST360014A 2 1
ST340014A 1 1