Quantum DLT 2000, Product Manual, Page: 186 / 345

DLT2000 SCSI Interface
8-40 DLT2000/DLT2700 Cartridge Tape Subsystem
generated for all initiators. The sense key will be set to UNIT ATTENTION, ASC
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.
____________________________________________________________
Code Basis of Comparison
Every update of the cumulative value
equal to threshold value
00b
01b
10b
11b
Cumulative value
Cumulative value not equal to threshold value
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 shall not increment and DU bit shall be 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