User's Manual

DLT4000 SCSI Interface
8-40 DLT4000/DLT4500/DLT4700 Cartridge Tape Subsystem
will be set to LOG EXCEPTION and ASCQ will be set to THRESHOLD
CONDITION MET. If the RLEC bit in control mode page is zero then, UNIT
ATTENTION will not be generated.
_________________________NOTE ____________________________
This comparison is performed in real time. Therefore, you do not need to
issue a Log Sense command to get the check condition. Once ETC is
selected, RLEC bit in Control mode page, the check condition will be
issued based on the criteria defined in the TMC bits if the criteria is met
in Real time. Check condition will not identify for which parameter code
the criteria is met. The user will need to issue Log Sense to read the
counters to see for which parameter code criteria is met.
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Parameter
Code Basis of Comparison
00b Every update of the cumulative value
01b Cumulative value equal to threshold value
10b Cumulative value not equal to threshold value
11b Cumulative value greater than threshold value
Figure 8-23 Threshold Met Criteria
• LP–List Parameter: This bit will always be set to zero as we treat the parameter
codes as data counter. When the data counter reaches its defined maximum value,
it is not increment and DU bit is set to 1. If the data counter is at or reaches its
maximum value during the execution of a command, the drive will complete the
command. If the RLEC bit of CONTROL MODE PAGE is 1, the drive then will
issue the status of CHECK CONDITION and set the sense key to RECOVERED
ERROR with additional sense code set to LOG COUNTER AT MAXIMUM.
Parameter Length
This field specifies the number of bytes of the parameter value.
Parameter Value
This field is the actual value of this log parameter