Quantum Instruments DLT 7000 - Manual (Page 270)

SCSI Commands
5-166 Quantum DLT 7000 Tape System
5.24 VERIFY COMMAND (13h)
The VERIFY command directs the tape drive to verify one or more blocks
beginning with the next block on the tape. Both CRC and EDCs are validated.
Bit
Byte
7 6 5 4 3 2 1 0
0 Operation Code (13h)
1 Logical Unit Number Reserved Immed BC Fixed
2 - 4
(MSB)
Verification Length
(LSB)
5 Unused Reserved Flag Link
Figure 5–80 VERIFY Command Descriptor Block - Data Format