Check And Clear Of Mtbf Information - NEC N8800-162F User Manual

5-42 Installing and Using Utilities

Check and Clear of MTBF Information

The MTBF information of a component can be viewed or cleared (initialized).
NEC Express5800/ft series manages the MTBF (mean time between failure) of each component. If
a fault occurs in a component, the NEC Express5800/ft series calculates the MTBF of the
component again. If the calculated value is lower than the pre-defined threshold, the NEC
Express5800/ft series disables the component to be used.
Contact your maintenance personnel if such a symptom as above occurs.
The table below shows in which Fault Class a component can check.
Component
CPU Module
PCI Module
Remote: Executable from remote management PC by using NEC ESMPRO Manager
Local: Executable on local server by using ft server utility
–: Not support
IMPORTANT: A disabled component with the MTBF lower than the threshold can be
forcibly enabled by clearing the MTBF. However, contact your maintenance personnel for the
forced use of such a component.
To clear the MTBF information of a component with NEC ESMPRO Manager, use the
[Maintenance] tree of the component of the [ft] tree of the DataViewer. Open the tree of the
component whose MTBF information is to be cleared and select the [Maintenance] tree.
To clear the MTBF information of a component with the ft server utility, use the utility screen of the
component. The table below shows the potential cases in which the MTBF information of a
component is to be cleared. Contact your maintenance personnel for clearing MTBF information.
Component
CPU Module To start the module forcibly after
replacing a module or if MTBF became
lower than the threshold due to
malfunction and disabled the module.
Executable in the following module
state (this can be viewed on manager
screen):
•
Broken
MTBF is lower than the threshold.
PCI Module Same as above
Remote:
Local:
–:
Check of MTBF Information
Remote
Fault Class:
uncorrectable
Fault Class:
uncorrectable
Remote
Executable from remote management PC by using NEC ESMPRO Manager
Executable on local server by using ft server utility
Not support
Local
Fault Class:
correctable
uncorrectable
*
microsync
* The current version
does not support it.
Fault Class:
uncorrectable
MTBF clear
To start the module forcibly after replacing
a module or if MTBF became lower than
the threshold due to malfunction and
disabled the module.
Executable in the following module state:
•
The amber LED is on.
•
The event indicating that MTBF is lower
than the threshold is registered in the
event log.
Same as above
Local