Changing The Mtbf Threshold - NEC Express5800/320Ma Technical Reference Manual

Managing MTBF Statistics

Changing the MTBF Threshold

The MTBF threshold is expressed in seconds. If a device's MTBF falls beneath this
threshold, the system takes the device out of service and changes the device state to
Broken.
!
If you change the MTBF threshold for a device, the device is not affected until another
failure occurs. For example:
•
If you increase the threshold for a device whose state is currently Broken, you must
enable the device so that it can return to service. The system will not change the
state of the device automatically.
•
If the device's actual MTBF is less than the new threshold (meaning that failures
occur more often than the threshold allows), and the device is enabled, the system
will not recalculate the MTBF and take the device out of service until another failure
occurs that causes the new, actual MTBF to be below the threshold.
To change the MTBF threshold for a device, right-click the device, click Set MTBF
Threshold, and enter a new threshold value in seconds.
2-6 Express5800/320Ma: Technical Reference Guide
C A U T I O N
Express5800/320Ma presets the MTBF thresholds. You
should not modify them unless instructed to do so by NEC
Technical Support or your service representative.