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5-124 Quantum DLT 7000 Tape System
MODE SENSE (6) / (10) Command (1Ah / 5Ah) (continued)
Table 5–59 TapeAlert Page Format Descriptor - Field Descriptions
Field Name Description
PS Parameters Savable. For MODE SELECT, this bit must be 0.
Additional Page
Length
This field indicates the number bytes in the page. However, the value does
not 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.
Perf Performance bit. Not supported.
DExcpt Disable Information Exception Operations. When this bit = 0, the reporting
method specified by the contents of MRIE is selected. When this bit = 1, 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 Not Supported.
LogErr Error Log. Not Supported.