User Manual

SCSI Commands Reference Manual, Rev. J 247
www.seagate.com Direct Access Block commands (SPC-5 and SBC-4)
See the VERIFY (10) command (see 3.55) for the definitions of the GROUP NUMBER field, VRPROTECT field, DPO bit, BYTCHK field,
LOGICAL BLOCK ADDRESS field, and VERIFICATION LENGTH field.
When checking of the LOGICAL BLOCK REFERENCE TAG field is enabled (see table 208, table 209, table 210, and table 211 in
3.55), the EXPECTED INITIAL LOGICAL BLOCK REFERENCE TAG field contains the value of the LOGICAL BLOCK REFERENCE TAG
field expected in the protection information of the first logical block accessed by the command instead of a value based on the
LBA.
If the ATO bit is set to one in the Control mode page (see 5.3.12) and checking of the LOGICAL BLOCK APPLICATION TAG field is
enabled (see table 208, table 209, table 210, and table 211 in 3.55), the LOGICAL BLOCK APPLICATION TAG MASK field contains a
value that is a bit mask for enabling the checking of the LOGICAL BLOCK APPLICATION TAG field in the protection information for
each logical block accessed by the command. A LOGICAL BLOCK APPLICATION TAG MASK bit set to one enables the checking of
the corresponding bit of the EXPECTED LOGICAL BLOCK APPLICATION TAG field with the corresponding bit of the LOGICAL
BLOCK APPLICATION TAG field in the protection information.
If the ATO bit is set to one in the Control mode page (see 5.3.12) and checking of the LOGICAL BLOCK APPLICATION TAG field is
disabled (see table 208, table 209, table 210, and table 211 in 3.55), or if the ATO bit is set to zero, the LOGICAL BLOCK
APPLICATION TAG MASK field and the EXPECTED LOGICAL BLOCK APPLICATION TAG field shall be ignored.
The LOGICAL BLOCK APPLICATION TAG MASK field and the EXPECTED LOGICAL BLOCK APPLICATION TAG field shall be ignored if:
a) the ATO bit is set to zero; or
b) the ATO bit is set to one in the Control mode page (see 5.3.12) and checking of the LOGICAL BLOCK APPLICATION TAG field
is disabled (see table 208, table 209, table 210, and table 211 in 3.55).