Formatted Capacity; Lba Mode; Default Logical Geometry; Physical Organization - Seagate ST9750423AS Product Manual

2.2 F
ORMATTED CAPACITY
Model
ST9750423AS, ST9750423ASG,
ST9750422AS, ST9750420AS and
ST9750420ASG
ST9640424AS, ST9640423AS and
ST9640423ASG
ST9500424AS, ST9500423AS and
ST9500423ASG
*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 137GB.
2.3 D
EFAULT LOGICAL GEOMETRY
C R /
YLINDERS EAD 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.
2.4 P
HYSICAL ORGANIZATION
D
RIVE MODEL
ST9750423AS, ST9750423ASG, ST9750422AS,
ST9750420AS and ST9750420ASG
ST9640424AS, ST9640423AS and ST9640423ASG
ST9500424AS, ST9500423AS and ST9500423ASG
M P M
OMENTUS RODUCT ANUAL

Formatted capacity*

750GB
640GB
500GB
S
ECTORS PER TRACK
63
, R . F
EV
Guaranteed sectors
1,465,149,168
1,250,263,728
976,773,168
R / N
EAD WRITE HEADS
4 2
4/3
Bytes per sector
(logical)
512
UMBER OF DISCS
6