Seagate ST3285N, Product Manual

Page: 46 / 151

3.4.4 Format Unit command (04
H
)
The Format Unit command formats the disc so that all of the user-ad-
dressable data blocks can be accessed. In addition, the disc can be
certified and control structures can be created for managing the disc and
defects.
If the specified logical unit is reserved, the Format Unit command is
rejected with a reservation conflict status. Extent reservations are not
supported. See Section 3.4.11 for more information about reservations.
The initiator can specify (or not specify) sectors to be reallocated during
the formatting process.
Bit
Byte
7 6 5 4 3 2 1 0
0 0 0 0 0 0 1 0 0
1 LUN
Fmt
Data
Cmp
lst
Defect list format
2 0 0 0 0 0 0 0 0
3–4 Interleave
5 0 0 0 0 0 0 Flag Link
Byte 1 The Fmt Data (format data) bit, the Cmp lst (complete list)
bit, and the
defect list format field are described in Sec-
tion 3.4.4.2.
Bytes 3–4 If the
interleave field is not supported, it can contain any
value. However, the drive always formats the disc with an
interleave of 1:1.
36 ST3655 Family SCSI Drives Product Manual, Rev. A