Formatted Capacity; Lba Mode; Default Logical Geometry; Physical Organization - Seagate Momentus Thin 5400-RPM Product Manual

3.2

Formatted capacity

Formatted capacity*
ST320LT020 - 9YG142
ST250LT003 - 9YG14C
ST160LT003 - 9YG141
*One GB equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment
and formatting.
3.2.1

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 logical blocks (LBA) as defined above.
See Section 5.3.1, "Identify Device command" (words 60-61 and 100-103) for additional information about 48-
bit addressing support of drives with capacities over 137GB.
3.3

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 logical blocks (LBA) as defined above.
3.4

Physical organization

Models
320GB models
250GB models
160GB models
6
Guaranteed logical blocks (LBA) - 512 emulation
625,142,448
488,397,168
312,581,808
Sectors per track
63
Read/write heads
2
1
Bytes per physical sector
4096
Number of disks
1
Momentus Thin Product Manual, Rev. E