Reference Guide

Chapter 4 SCSI Commands
MODE SENSE (6) / (10) Command (1Ah / 5Ah)
DLT-S4 Interface Reference Guide 198
The Sense Key is set to RECOVERED ERROR with the Additional Sense
Code set to 5Dh / 00h (TapeAlert event). The SCSI command with
CHECK
CONDITION
completes without error before the report of any exception
condition and does not need to be repeated.
04h Unconditionally Generate Recovered Error. The drive reports
informational exception conditions by returning
CHECK CONDITION
status on the next SCSI command (except
INQUIRY and REQUEST SENSE
commands) following detection of the condition. The Sense Key is set to
RECOVERED ERROR with the Additional Sense Code set to 5Dh / 00h
(TapeAlert event). The SCSI command with
CHECK CONDITION
completes without error before the report of any exception condition and
does not need to be repeated.
06h Only Report Informational Exception Condition on Request. The drive
preserves information exception data. To access the data, issue an
unsolicited
REQUEST SENSE command to poll the drive. The Sense Key is
set to NO SENSE with the Additional Sense Code set to 5Dh / 00h
(TapeAlert event).
The Additional Sense Code of 5Dh / 00h for values 03h and 06h signals that a
TapeAlert occurred. The drive stores information about the event in the TapeAlert
Log page. The setting of the MRIE field does not impact logging of events in the
TapeAlert Log page.
Interval Timer Always set to 0.
Report Count /
Test Flag
Number
Report Count or Test Flag Number. Must be set to 0 unless the Test bit is set to 1, in
which case this field indicates a test condition to be generated as follows:
Value Result
0 Do not change the TapeAlert Flag but report an exception condition
based on the value in the MRIE field.
1 to 64 Set the TapeAlert flag indicated in the value and generate an exception
condition based on the value in the MRIE field.
-64 to -1 Clear the TapeAlert flag in an equivalent manner to taking corrective
action for the flag indicated by the absolute number of the value.
32,767 Set all TapeAlert flags and generate an exception condition based on the
value in the MRIE field.
Field Description