Formatted Capacity; Lba Mode; Default Logical Geometry - Seagate Barracuda ST3160811AS Product Manual

2.2

Formatted capacity

Formatted
Model capacity*
ST3160811AS 160 Gbytes
ST3160211AS 160 Gbytes
ST3120811AS 120 Gbytes
ST3120211AS 120 Gbytes
ST380811AS 80 Gbytes
ST380211AS 80 Gbytes
ST340211AS 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.
10
Guaranteed
sectors
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. A
Bytes per sector
512
512
512
512
512
512
512