Seagate MEDALIST 1080SL Product Manual page 94

84 Medalist 1080sl SCSI Product Manual, August 1995
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 field indicates the number of physi-
cal 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. The default
value is 0024
zone.
Bytes 18–19 The cylinder skew factor field indicates the number of
physical sectors between the last logical block of one
cylinder and the first logical block of the next cylinder. The
actual cylinder skew factor that the drive uses depends
on the zone. The default value is 002D
cylinder skew factor for the first zone.
Byte 20 The drive type field bits are defined as follows:
The soft sectoring (SSEC) bit is set to 1. This bit is
reported as not changeable. Although it can be set to
satisfy system requirements, it does not affect drive per-
formance.
The hard sectoring (HSEC) bit is set to 0. This bit is
reported as not changeable. Although it can be set to
satisfy system requirements, it does not affect drive per-
formance.
The removable media (RMB) bit is always set to 0, indi-
cating that the drive does not support removable media.
This same bit is also returned in the Inquiry parameters.
The surface map (SURF) bit is set to 0, indicating that the
drive allocates successive logical blocks to all sectors
within a cylinder before allocating logical blocks to the
next cylinder.
Bytes 21–23 Reserved
, which is the track skew factor for the first
H
, which is the
H