Hitachi XP P9500 User Manual page 211

while intermittent errors are not being monitored, the values will not
change.
The monitoring interval specified in this parameter is stored even
though specifying -iem off disables intermittent error monitoring.
Therefore, when you re-enable intermittent error monitoring and a
monitoring interval is not specified, error monitoring will be performed
by using the stored monitoring interval.
-iemnum number-of-times-error-is-to-occur
Specify the number of times the error is to occur. Valid values are
from 1 to 99. The default is 3.
During intermittent error monitoring, if you change the number of
times that the error is to occur in order for the system to determine
that an intermittent error has occurred, the number of errors and the
time that has passed since intermittent error monitoring has started
are reset to 0. The changed setting will take effect immediately and
intermittent error monitoring will restart.
When intermittent error monitoring is not being performed, if you
change the number of times that the error is to occur in order for the
system to determine that an intermittent error has occurred, the new
value will take effect after the next automatic failback successfully
completes. When intermittent error monitoring is not being
performed, the number of errors that determine that an intermittent
error has occurred is not counted and this value is not changed.
The number of times that the error is to occur is stored in the system,
even when -iem off is specified and intermittent error monitoring is
disabled. Therefore, when you re-enable intermittent error monitoring
without specifying the number of times, the error monitoring will be
executed using the value stored in the system.
When the set -iem on operation is executed during error monitoring,
even if you do not change the conditions for intermittent error
monitoring, the number of errors and the time that has passed since the
error monitoring has started are reset to 0. Intermittent error monitoring
will then resume with the changed settings.
If you set the automatic failback function to off while intermittent error
monitoring is on, intermittent error monitoring will be disabled. Note,
however, that if you use the view -sys operation to display the HDLM
functionality configuration, Intermittent Error Monitor will be shown as
on. When the automatic failback function is returned to on, intermittent
error monitoring will once again be enabled.
The executable operations for the automatic failback function and
intermittent error monitoring depend on the settings for those functions.
Table 6-5 Relationship Between the Setting for the Automatic Failback
Function and Intermittent Error Monitoring and the Executable Operations
on page 6-24 shows the relationship between the settings for the
automatic failback function and intermittent error monitoring and the
executable operations for those functions.
Command Reference
Hitachi Dynamic Link Manager User Guide (for Windows(R))
6-23