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DiamondMax 20 Serial ATA Product Manual, Rev. A
2.2 Formatted capacity
*One Gbyte 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 Gbytes.
2.3 Default logical geometry
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.
Model
Formatted
capacity*
Guaranteed
sectors Bytes per sector
STM3160811AS 160 Gbytes 312,581,808 512
STM3160211AS 160 Gbytes 312,581,808 512
STM380811AS 80 Gbytes 156,301,488 512
STM380211AS 80 Gbytes 156,301,488 512
STM340211AS 40 Gbytes 78,165,360 512
Cylinders Read/write heads Sectors per track
16,383 16 63