OEM MANUAL
5
Revision: 1
3.
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A save parameter (SP) bit of one directs the drive to save all log parameters to the
disk which are identified as savable by the DS (disable save) bit of their own
Table 5 17) after performing the specified LOG SELECT
bit specifies they are savable.
Table .17
SP
DS
1
1
0
1
Log Parameter Saved
Log Parameter Not Saved
X - Don t care
The type of parameter value is defined by the PC (page control) field.
Table 5 18.
5.
Page Control Field (PC)
Bit 7
Type of Parameter Values
LOG SENSE
0
0
1
0
0
1
Current Cumulative Values
Default Threshold Values
Threshold Values
Cumulative Values
Default Cumulative Values
The current threshold value can only be modified by the initiator via the LOG
B
and putting the new threshold value in
log parameter is ignored by the drive in this case.
The current cumulative values may be updated by the drive or by the initiator using
by the drive. This is done by the combination of PC field (01
B
update) bit in the parameter control byte.
The initiator can request the drive to set the current threshold parameters to the
10
B
The drive will set all cumulative parameters to their default values in response to a
LOG SELECT command with the PC field set to 11 and the parameter list length
field set to zero.