User's Guide

Chapter 3 Emulated DLT7000 SCSI Commands
Log Select (4Ch)
Quantum DX-Series Software Interface Guide 155
DU Disable Update. This bit is not defined for LOG
SELECT; the target ignores any value in DU.
DS Disable Save. Not supported. Must be set to 1.
TSD Target Save Disable. Not supported. Must be set
to 1.
ETC Enable Threshold Comparison. When set to 1,
drive performs a comparison with threshold
values once the cumulative value is updated.
Comparison criteria are defined in Threshold
Met Criteria (TMC). If the comparison is met and
the RLEC bit of MODE SELECT / SENSE
Control Page 0Ah is set to 1, then a UNIT
ATTENTION is generated for all initiators. The
additional sense code is set to THRESHOLD
CONDITION MET. If the RLEC bit is 0 and the
comparison is met, then UNIT ATTENTION is
not generated.
Field Name Description