User's Guide

Commands: Mode Select (15h) Page 87
(which is 5D00h for a Tape Alert event). The command that has the Check
Condition shall complete without error before any exception condition may be
reported (and thus does NOT need to be repeated).
0x4: Unconditionally generate Recovered Error. This method instructs the tape
drive to report information exception conditions, by returning a Check Condition
status on the next SCSI command (excluding Inquiry and Request Sense) after an
informational exception condition was detected. The sense key shall be set to
RECOVERED ERROR and the additional sense code shall indicate the cause of the
information exception condition (which is 5D00h for a Tape Alert event). The
command that has the Check Condition shall complete without error before any
exception condition may be reported (and thus does NOT need to be repeated).
0x5: Generate No Sense. This method instructs the tape drive to report information
exception conditions by returning a Check Condition status on the next SCSI
command (excluding Inquiry and Request Sense) after an informational exception
condition was detected. The sense key shall be set to NO SENSE and the additional
sense code shall indicate the cause of the information exception condition (which is
5D00h for a Tape Alert event). The command that has the Check Condition shall
complete without error before any exception condition may be reported (and thus
does NOT need to be repeated).
0x6: Only report informational exception condition on request. This method
instructs tape drive to preserve information exception(s) information. To find out
about information exception conditions the application client polls the tape drive by
issuing an unsolicited REQUEST SENSE command. The sense key shall be set to
NO SENSE and the additional sense code shall indicate the cause of the
informational exception condition (which is 5D00h for a Tape Alert event).
In MRIE modes 1h to 6h, the additional sense code of 5D00h indicates that a Tape
Alert event has occurred on the device, and detailed information about this event is
stored in the Tape Alert Log page. Note that the MRIE modes do not affect the
logging of events in the Tape Alert Log page.
Interval Timer (Default set to 0):
When this field is set to zero, this indicates that the target shall only report the
informational exception condition one time. When this field is set to non-zero, the
value indicates the period in 100 millisecond increments for reporting that an
informational exception condition has occurred. The drive shall not report
informational exception conditions more frequently than the specified timer interval
and as soon as possible after the timer interval has elapsed. A value of
0xFFFFFFFF in the field indicates the timer interval is vendor specific and is a
reserved setting in the Scorpion 40 drive.