User Manual

SCSI Commands Reference Manual, Rev. J 260
www.seagate.com Direct Access Block commands (SPC-5 and SBC-4)
3.67 WRITE AND VERIFY (32) command
The WRITE AND VERIFY (32) command (see table 224) requests that the device server transfer the specified logical block(s) from
the data-out buffer, write them to the medium, and then verify that they are correctly written. Each logical block includes user
data and may include protection information, based on the WRPROTECT field and the medium format. The logical blocks are
only transferred once from the data-out buffer to the device server.
Table 224 WRITE AND VERIFY (32) command
Bit
Byte
7 6 5 4 3 2 1 0
0
OPERATION CODE (7Fh)
1
CONTROL
2
Reserved
. . .
5
6
Reserved GROUP NUMBER
7
ADDITIONAL CDB LENGTH (18h)
8
(MSB)
SERVICE ACTION (000Ch)
9
(LSB)
10
WRPROTECT DPO Reserved BYTCHK Reserved
11
Reserved
12
(MSB)
LOGICAL BLOCK ADDRESS
. . .
19
(LSB)
20
(MSB)
EXPECTED INITIAL LOGICAL BLOCK REFERENCE TAG
. . .
23
(LSB)
24
(MSB)
EXPECTED LOGICAL BLOCK APPLICATION TAG
25
(LSB)
26
(MSB)
LOGICAL BLOCK APPLICATION TAG MASK
27
(LSB)
28
(MSB)
TRANSFER LENGTH
. . .
31
(LSB)