User's Guide

Chapter 2 Media Changer Commands
Mode Sense (6) / (10) Command (1Ah/ 5Ah)
Quantum SuperLoader 3 Software Interface Guide 54
Table 27 TapeAlert Page
Format Descriptor
Field Name Description
PS
Parameters Savable. Not supported, this bit must be 0.
Additional Page
Length
This field indicates the number of bytes in the page. However, this value
does not include bytes 0 and 1. The length is returned on
MODE SENSE
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 device 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. Performance Impacting Exceptions are acceptable. This
bit is ignored.
DExcpt
Disable Information Exception Operations. If = 0, the reporting method
specified by the contents of
MRIE is selected. When this bit is set to 1, all
information exception conditions are disabled regardless of the contents
for the
MRIE field. To enable CHECK CONDITION mode, DExcpt
should = 0. Default setting = 1.
Test
Test bit. Used to generate false TapeAlert conditions to test the response
to failure conditions. See the
Report Count/Test Flag Number description
for more information. If both
Test and DExcpt are set to 1, the drive will
return
CHECK CONDITION status, with a send key ILLEGAL REQUEST,
and additional sense data of
INVALID FIELD IN PARAMETER LIST.
LogErr
Error Log. Not supported.
MRIE
Method for Reporting Information Exceptions. The tape drive uses the
contents of this field to report information about exception conditions.
Value Method
00h No reporting of Informational Exception Conditions.
The device server does not report information exception
conditions.