SCSI Commands

MODE SELECT (6) / (10) Command (15h) / (55h) (continued)

Table 5–46 TapeAlert Page Format Descriptor - Field Descriptions

Field Name

Description

 

 

PS

Parameters Savable. For MODE SELECT, this bit must be 0.

Additional Page

This field indicates the number bytes in the page. However, the value does not

Length

include bytes 0 and 1. The length is returned in MODE SENSE commands and

 

must subsequently be set to the same value when performing MODE SELECT. If

 

the page length does not match that expected by the drive, a CHECK CONDITION

 

status is returned, sense key set to ILLEGAL REQUEST.

 

The drive returns a CHECK CONDITION status with sense key set to ILLEGAL

 

REQUEST if it receives an unsupported Page Code or a Page field with values not

 

supported or changeable. In such cases, no parameters are changed as a result

 

of the command.

Pert

Performance bit. Not supported, always = 0.

DExcpt

Disable Information Exception Operations. When this bit = 0, the reporting

 

method specified by the contents of MRIE is selected. When this bit = 1 (its

 

default setting), all information exception operations are disabled and the

 

contents of the MRIE field are ignored. When in this mode, the TapeAlert Log

 

page is polled by the software. To enable CHECK CONDITION mode, DExcpt

 

should = 0.

Test

Test Bit. Not supported.

LogErr

Error Log. Not supported

 

 

5-88

Quantum DLT 7000 Tape System

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Quantum Instruments DLT 7000 manual TapeAlert Page Format Descriptor Field Descriptions
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DLT 7000 specifications

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