Verify Command
August 2016 Commands 229
Verify Command
The Verify command reads one or more blocks of data from the tape without
transferring the data to the host.
TABLE 3-173 Verify Command
Byte
Bit
76543210
0 Operation Code (13h)
1 Reserved VTE VLBPM VBF Immed BYTCMP Fixed
2
thru
4
(MSB)
Verification Length
(LSB)
5 SILI Control Byte
Parameter Value
VTE Verify To End-of-data
0 = Do not verify to end-of-data
1 = Verify to end-of-data
If the verification fails the Information field in Status is zero
The BYTCMP and VBF must be zero
The Verification Length field is ignored
VLBPM Verify Logical Block Protection Method
0 = Do not verify logical block protection mode
1 = Verify logical block protection mode
Verify that each logical block uses the logical block protection
method specified in the Control Data Protection mode page
VBF Verify By Filemarks
0 = Do not verify by filemarks
1 = Verify by filemarks
The Verification Length field contains the number of files to verify
If the verification fails the Information field in Status is the number
of files successfully verified, Read Position should be used to
determine the record that failed
The BYTCMP must be zero
Immed: Immediate
0 = Return status when verify is completed
BYTCMP: Byte compare
0 = Medium verification
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