SCSI Commands
Page
119
Verify Command Operation
Comparison errors cause a Check Condition with the Sense Key set to 0Eh, which
indicates miscompare. The residual byte or block count is reflected in the Request
Sense data.
When the Fixed bit is set, the Verify Length specifies the number of contiguous
blocks to be verified on the tape. When the Fixed bit is cleared, the Verify Length
specifies the number of bytes in the block to verify.
The byte compare starts on a block boundary starting at the current tape block
position.
Completion Status
Code
Message
Description
00h
Good
Status
•
The drive is ready to perform any appropriate command.
•
The drive remains in any previously set mode.
•
The tape is positioned on the EOT side of the last block verified.
02h
Check
Condition
Use the Request Sense command to retrieve status information. Possible
Sense Keys are:
Code
Message
Description
02h
Not Ready
No cartridge is in the drive.
03h
Media Error
Unrecoverable data error encountered.
04h
Hardware Error
Parity error on the SCSI bus or drive hardware
failure.
05h
Illegal Request
The Command Descriptor Block is invalid.
06h
Unit Attention
The cartridge was changed, or the drive was re-
set prior to this command.
08h
Blank Check
EOD was encountered.
0Eh
Miscompare
Verify data miscompare.
