Maxtor ATLAS 10K III - Manual (Page 129)

SCSI Description
Maxtor Atlas 10K III 5-65
Table 5-81 Information Exceptions Control Page-Field Descriptions (Page 1Ch)
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PS 1
Parameters Savable. This bit is only used with the MODE SENSE command.
A returned value of 1 indicates that the target is capable of saving the page
in a non-volatile, vendor-specific location. This bit is reserved with the
MODE SELECT command.
PERF 1
Performance. This bit enables/disables performance-sensitive functions. For
Atlas 10K III, this means enabling or disabling flushing of SMART data to
the media (done hourly). The prediction algorithm is designed to reset the
current accumulated data approximately every 100,000 blocks read or writ-
ten per head.
When this bit = 0, current accumulated SMART data is preserved across
power cycles.
When this bit = 1, current accumulated SMART data is lost across power
cycles.
EWASC 1
Enable Warning ASC. When this bit = 0, reporting of thermal warming is
disabled.
When this bit = 1, thermal warning reports are enabled.
DExcpt 0
Disable Exceptions. This bit is used to enable or disable SMART exception
reporting. When this bit = 0, SMART exception reporting is enabled.
When this bit = 1, all SMART functions are disabled, including reporting
SMART exceptions, running the prediction algorithm, and accumulating
SMART data.
Test 0
When this bit = 0, the test function is disabled.
When this bit = 1, the disk drive reports false SMART trip reports as pre-
scribed in the MRIE field (see below). Interval timer field and report count
and method fields apply. When the test bit forces a SMART failure, the fail-
ure is reported with a sense code/qualifier of 5D/FF.
LogErr 0
When this bit = 0, it indicates that log sense information is vendor-unique.
NOTE: LogErr = 0 is the only value supported.
MRIE 4
Method of Reporting Informational Exceptions. The value within this field in-
dicates the method that will be used by the disk drive to report informational
exception conditions, as shown in Table 5-82. The relative priority of report-
ing of multiple informational exceptions is vendor-specific.
Interval
Timer
0
This field indicates the period, in 100 millisecond increments, for reporting
that an informational exception condition has occurred. The disk drive will
not report such conditions more frequently than the time specified by the
Interval Timer field and as soon as possible after the timer interval has
elapsed. After the condition has been reported, the interval timer restarts.
A value of 0 in the Interval Timer field indicates that the disk drive will only
report the informational exception condition once. A value of FFFFFFFFh in
the Interval Timer field indicates that the timer interval is vendor-specific.
If the disk drive’s predictor detects a SMART threshold trip, it reports the
failure only if it has not reported a failure within the last interval timer peri-
od. A value of 0 means that there is no required waiting between SMART
reports.
NOTE: The Interval Timer field does not apply to MRIE mode 6.