Formatted Capacity; Lba Mode; Default Logical Geometry - Seagate Barracuda ST3808110AS Product Manual

2.2

Formatted capacity

Formatted
Model capacity*
ST3500641AS 500 Gbytes
ST3500841AS 500 Gbytes
ST3400633AS 400 Gbytes
ST3400833AS 400 Gbytes
ST3300622AS 300 Gbytes
ST3300822AS 300 Gbytes
ST3250624AS 250 Gbytes
ST3250824AS 250 Gbytes
ST3200827AS 200 Gbytes
ST3160812AS 160 Gbytes
ST3160212AS 160 Gbytes
ST3120813AS 120 Gbytes
ST3120213AS 120 Gbytes
ST3808110AS 80 Gbytes
ST3802110AS 80 Gbytes
ST3402111AS 40 Gbytes
*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

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.
18
Guaranteed
sectors
976,773,168
976,773,168
781,422,768
781,422,768
586,072,368
586,072,368
488,397,168
488,397,168
390,721,968
312,581,808
312,581,808
234,441,648
234,441,648
156,301,488
156,301,488
78,165,360
Sectors per track
63
Barracuda 7200.9 Serial ATA Product Manual, Rev. D
Bytes per sector
512
512
512
512
512
512
512
512
512
512
512
512
512
512
512
512