Data Format
Cylinder –154
Cylinder –147
Cylinder –143
Cylinder –4
Zone
Cell
0
1
0
•
P1
1
17
Note:
Spare sectors on the last track in each cylinder are not necessarily placed at the end of the track
because of a track skew or a cylinder skew. (Details are explained in Subsection 3.1.3.)
Apart from the above logical configuration, the HDD intends to increase the storage capacity by
dividing all cylinders into several zones and changing a recording density of each zone.
3-2
~
Internal test cylinder
to
~
SA139
~
to
~
Cylinder
0
User Space for Cell 0-0
1
•
Spare Sectors per Cell 0-0
26
27
User Space for Cell 1-0
28
•
53
Spare Sectors per Cell 1-0
m-26
User Space for Cell P1-0
•
Spare Sectors per Cell P1-0
m
Alternate Cylinder
(1)
User Space for Cell xx-1
User Space for Cell yy-17
n
Figure 3.1
Cylinder configuration
~
Internal test space
~
~
System space
•
SA0
~
User Space
(Primary Cylinder
0 - (n-1))
:
C141-E234