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VERIFY
0
1
2
3
4
5
Immed
0
152 Commands
V
verifies one or more blocks beginning with the next block on the tape.
ERIFY
The verification is media verification only. It reads data from the tape as it
would for a read but then immediately discards it. No data is transferred
between the host and drive.
The command is identical to the
execution checks are identical. Sense data reporting on errors/exceptions is
identical. The only differences are:
No data phases occur during verification.
The
command has no SILI bit. When an illegal length record is
Verify
encountered,
Verify
V
Note
erify
support the ANSI "byte compare" or "Immed" options (see the
ANSI SCSI specification).
Pre-Execution Checks:
Illegal Field
Unit Attention
Command Descriptor Block:
7
6
Reserved (0)
(MSB)
CDB Fields:
The Immediate Reporting option is not supported, so this bit must be 0.
command in most respects. The pre-
READ
behaves like
READ
will not complete until all data has been read. It does
Fixed Bit
Reservation
Media Access
Diagnostic Status
5
4
Operation Code (13h)
Verification Length
Control
with the SILI bit clear.
Deferred Error
3
2
Immed(0) BCmp(0)
13h
1
0
Fixed
(LSB)
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