User Manual

SCSI Commands Reference Manual, Rev. J 238
www.seagate.com Direct Access Block commands (SPC-5 and SBC-4)
If the BYTCHK field is set to 01b or 11b, then the device server shall check the protection information read from the medium based on the
VRPROTECT field as described in table 209.
Table 209 VRPROTECT field with BYTCHK field set to 01b or 11b - medium (Sheet 1 of 2)
Code
Logical unit formatted
with protection
information
Field in protection
information [g]
Extended INQUIRY
Data VPD page bit
value [f]
If check fails
[d] [e]
,
additional sense code
000b
Yes
[i]
LOGICAL BLOCK
GUARD
GRD_CHK = 1 LOGICAL BLOCK GUARD CHECK FAILED
GRD_CHK = 0 No check performed
LOGICAL BLOCK
APPLICATION TAG
APP_CHK = 1
[c]
[g] LOGICAL BLOCK APPLICATION TAG CHECK FAILED
APP_CHK = 0 No check performed
LOGICAL BLOCK
REFERENCE TAG
REF_CHK = 1 [h] LOGICAL BLOCK REFERENCE TAG CHECK FAILED
REF_CHK = 0 No check performed
No No protection information on the medium available to check
001b
010b
011b
100b
101b [b]
Yes LOGICAL BLOCK
GUARD
No check performed
LOGICAL BLOCK
APPLICATION TAG
No check performed
LOGICAL BLOCK
REFERENCE TAG
No check performed
No Error condition [a]