SCSI Commands

 

 

VERIFY

Command (13h) (continued)

 

 

 

Table 5–81 VERIFY Command Data - Field Descriptions

 

 

 

 

 

 

 

Field Name

 

Description

 

 

 

 

 

 

 

Immed

 

Immediate. When set to 1, the VERIFY command completes before any

 

 

 

 

tape medium movement is done (that is, when the processing has been

 

 

 

 

initiated.

 

 

BC

 

Byte Check. When set to 0, the tape drive performs an internal CRC/ECC

 

 

 

 

check of data. No data is transferred to the initiator.

 

 

 

 

When set to 1, the command is rejected.

 

 

Fixed

 

This bit specifies whether fixed-length or variable-length blocks are to be

 

 

 

 

verified.

 

 

 

 

When set to 0, variable-block mode is requested. A single block is

 

 

 

 

transferred with the Verification Length specifying the maximum number

 

 

 

 

of bytes the initiator has allocated for verification.

 

 

 

 

When the Fixed bit is set to 1, the Verification Length specifies the number

 

 

 

 

of blocks to be verified. This is valid only if the logical unit is currently

 

 

 

 

operating in Fixed Block mode.

 

 

Verification Length

This field specifies the amount of data to verify, in blocks or bytes as

 

 

 

 

indicated by the Fixed bit.

 

 

 

 

 

 

Quantum DLT 7000 Tape System

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Quantum Instruments DLT 7000 manual Command 13h, Verify Command Data Field Descriptions

DLT 7000 specifications

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