Fujitsu MAP3147NC - Enterprise - Hard Drive, Product/Maintenance Manual

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3-2 C141-E166
Alternate Cylinder
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.)
n = MAP3147NC/NP: 47,589
MAP3735NC/NP: 47,645
MAP3367NC/NP: 47,771
Cylinder –73
to
Cylinder –4
User space
(Primary
Cylinder
0 - (n - 1))
System space
Internal test space
Cylinder –85
to
Cylinder –78
•
SA0
SAS69
Internal test cylinder
~ ~
~ ~
~ ~
~ ~
User Space for Cell 0-0
Spare Sectors per Cell 0
User Space for Cell 1-0
Spare Sectors per Cell 1
User Space for Cell P1-0
Spare Sectors per Cell P1
User Space for Cell xx-1
User Space for Cell yy-17
.
.
Zone Cell Cylinder
0
1
0
13
14
.
.
15
1
27 0
.
m-13
P1
.
m
(1)
1
17
n
Figure 3.1 Cylinder configuration
Apart from the above logical configuration, the IDD intends to increase the storage capacity by
dividing all cylinders into several zones and changing a recording density of each zone. Tables 3.1
to 3.3 show the zone layout and the track capacity.