Seagate Medalist 2160N (ST52160N), Product Manual

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Bytes 2–3 The tracks per zone field indicates the number of tracks the
drive allocates to each defect-management zone. Spare
sectors or tracks are placed at the end of each defect-
management zone. If each zone is treated as containing one
track, the valid value for tracks per zone is 1. If each zone is
treated as containing one cylinder, the valid value is equal
to the number of read/write heads. The drive supports only
one zone for the entire drive.
Bytes 4–5 The alternate sectors per zone field indicates the number
of spare sectors to be reserved at the end of each defect-
management zone. The drive defaults to 7D0
H
(2000)
spare blocks at the end of the volume.
Bytes 6–7 The alternate tracks per zone field indicates the number
of spare tracks the drive reserves at the end of each
defect-management zone. A value of 0 indicates that no
spare tracks are reserved at the end of each zone for
defect management.
Bytes 8–9
The
alternate tracks per volume field indicates the number
of spare tracks to be reserved at the end of the drive for
defect management. A value of 0 indicates that no spare
tracks are reserved at the end of each zone for defect
management.
Bytes 10–11 The sectors per track field indicates the number of physi-
cal sectors the drive allocates per track. The drive reports
the average number of physical sectors per track because
the number of sectors per track varies between the outer
and inner tracks.
Bytes 12–13 The data bytes per physical sector field indicates the
number of data bytes allocated per physical sector.
Bytes 14–15 The interleave field is the interleave value sent to the drive
during the last Format Unit command. This field is valid
only for Mode Sense commands. The drive ignores this
field during Mode Select commands. The interleave is
always 1:1.
Bytes 16–17 The track skew factor
12
field indicates the number of
physical sectors on the media between the last logical
block of one track and the first logical block of the next
sequential track of the same cylinder. The actual track
skew factor that the drive uses is different for every zone.
12. The skew is actually in units of servo bursts, which are not visible through the interface.
The values shown is the skew approximated to the nearest sector.
Medalist Pro 2160N/2160WC Product Manual, Rev. A 103