Drive Specifications; Formatted Capacity; Default Logical Geometry - Seagate Barracuda ATA Series Product Manual

Barracuda ATA Family Product Manual, Rev. B

1.0 Drive specifications

Unless otherwise noted, all specifications are measured under ambient
conditions, at 25°C, and nominal power. For convenience, the phrases
the drive and this drive are used throughout this manual to indicate the
ST328040A, ST327240A, ST320430A, ST313620A, ST310220A and
the ST36810A.

1.1 Formatted capacity

Drive Model Guaranteed Mbytes
(1 Mbyte = 10
ST328040A
ST327240A
ST320430A
ST313620A
ST310220A
ST36810A

1.1.1 Default logical geometry

CHS Mode Cylinders
ST328040A 16,383
ST327240A 16,383
ST320430A 16,383
ST313620A 16,383
ST310220A 16,383
ST36810A 14,123
LBA Mode
When addressing either drive 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 .
Guaranteed
sectors
bytes)
6
28,520 55,385,552
27,333 53,704,096
20,520 40,079,088
13,666 26,692,776
10,242 20,005,650
6,833 13,346,235
Read/Write heads
16
16
16
16
16
15
5
Bytes per
sector
512
512
512
512
512
512
Sectors per track
63
63
63
63
63
63