HP Surestore 80fx Optical Drive and Library SCSI-2 Command Reference - Page 177
Verify (Group 5) Command (AFH),
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SCSI-2 Drive Command Set Verify (Group 5) Command (AFH) Table 2-126 Verify (Group 5) Command (AFH) This command verifies the data starting from the specified logical block address by checking the error correction code. This command has two modes of operation, depending on the value of the BV bit. If the Blk Vfy bit is set to 0, it verifies previously written data integrity starting at the specified Logical Block Address by reading the data and checking the Error Correction Code. The verification threshold is set to approximately half of the error correction capability. Verify (Group 5) CDB Byte 7 6 5 4 3 2 1 0 0 Operation Code (AFH) 1 Logical Unit Number DPO Rsvd Blk Rsvd RelAdr (0) (0) Vfy (0) 2 Logical Block Address (MSByte 3 Logical Block Address 4 Logical Block Address 5 Logical Block Address (LSByte) 6 Verification Length (MSByte) 7 Verification Length 8 Verification Length 9 Verification Length (LSByte) 10 Reserved (0) 11 Reserved (0) Flag Link 2-140 Chapter 2