Formatted Capacity; Lba Mode; Default Logical Geometry - Seagate ST3400620AS Product Manual

2.2

Formatted capacity

Formatted
Model capacity*
ST3750640AS 750 Gbytes
ST3750840AS 750 Gbytes
ST3500630AS 500 Gbytes
ST3500830AS 500 Gbytes
ST3400620AS 400 Gbytes
ST3400820AS 400 Gbytes
ST3320620AS 320 Gbytes
ST3320820AS 320 Gbytes
ST3300620AS 300 Gbytes
ST3300820AS 300 Gbytes
ST3250620AS 250 Gbytes
ST3250820AS 250 Gbytes
ST3200820AS 200 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
1,465,149,168
1,465,149,168
976,773,168
976,773,168
781,422,768
781,422,768
625,142,448
625,142,448
586,072,368
586,072,368
488,397,168
488,397,168
390,721,968
Sectors per track
63
Barracuda 7200.10 Serial ATA Product Manual, Rev. A
Bytes per sector
512
512
512
512
512
512
512
512
512
512
512
512
512