Seagate ST3285N, Product Manual

Page: 118 / 151

C.7 Notch page (0C
H
)
The Notch page contains parameters that describe the notches. The
table below summarizes the function, default value, and the changeability
of each bit.
The drive uses zone bit recording, which means that the outer cylinders
of the disc contain more logical blocks than the inner cylinders. The
cylinders are organized into groups, called zones or notches. Every
logical block is part of a notch. Notches do not overlap.
Bit
Byte
7 6 5 4 3 2 1 0
0 PS (1) Page code (0C
H
)
1 Page length (16
H
)
2 ND LPN Reserved
default 1 0 0 0 0 0 0 0
changeable 0 0 0 0 0 0 0 0
3 (default) Reserved (00
H
)
changeable (00
H
)
4–5 Maximum number of notches
default
ST3285N, ST3390N, ST3550N = 13
H
ST3655N = 12
H
changeable 0000
H
6–7 (default) Active notch (0000
H
)
changeable 0 0 0 1 1 1 1 1
8–11 (default) Starting boundary (00000000
H
)
changeable 00000000
H
12–15 Ending boundary
default
ST3285N, ST3390N, ST3550N = 000A7602
H
ST3655N = 0009BC04
H
changeable 00000000
H
16–23 (default) Pages notched (0000000000000008
H
)
changeable 0000000000000000
H
108 ST3655 Family SCSI Drives Product Manual, Rev. A