SCSI Commands

REQUEST SENSE Command (03h) (continued)

Table 5–71 Supported Sense Keys

Sense

Description

Key

 

 

 

0h

NO SENSE. Check the Filemark/EOM/ILI bits and the Additional Sense Code/Additional

 

Sense Code Qualifier bytes.

1h

RECOVERED ERROR. This can be caused by rounding of Mode Parameters on a MODE

 

SELECT, or may report that READ/WRITE error rates are reaching subsystem specification

 

limits for optimal operation. The device may still be able to continue to function without

 

any unrecovered errors for a long period of time, however. No CHECK CONDITION is

 

generated unless the PER bit of Mode Page 01h is set.

2h

NOT READY. The tape medium is not ready for tape operation commands. Tape medium

 

might not be present in the drive or may be in the process of loading or calibrating.

3h

MEDIUM ERROR. An unrecoverable WRITE, READ, or positioning error has occurred.

 

Detailed device-specific information may be available.

4h

HARDWARE ERROR. The Additional Sense Code / Additional Sense Code Qualifier fields

 

may present more specific information.

5h

ILLEGAL REQUEST. The Command Descriptor Block or supplied parameter data had an

 

unsupported or illegal operation specified. Check bytes 15, 16, and 17.

6h

UNIT ATTENTION. Unit Attentions are created after a device reset, if the medium

 

asynchronously becomes ready to the initiator, if another initiator changes Mode

 

Parameters, and/or if the firmware is updated.

7h

DATA PROTECTED. The current tape medium is write-protected. This can be because the

 

Write Protect switch on the cartridge is in its enabled position or if the tape medium is

 

not the appropriate type (DLTtape I or DLTtape II), or if a software write protect is issued.

8h

BLANK CHECK. An End of Data or LongGap has been encountered.

Bh

COMMAND ABORTED. This key is generated when a command has been aborted by the

 

tape drive for some reason. Check the Additional Sense Code / Additional Sense Code

 

Qualifier bytes.

Dh

VOLUME OVERFLOW. This key indicates that the physical end of tape medium has been

 

reached during writing. The initiator ignored the End of Medium condition and

 

continued to write to tape.

Eh

MISCOMPARE. A compare error has occurred during READ by the self-tests invoked

 

during execution of a SEND DIAGNOSTIC command.

 

 

Quantum DLT 7000 Tape System

5-149

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Quantum Instruments DLT 7000 manual Supported Sense Keys, Sense Code Qualifier bytes
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DLT 7000 specifications

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