Installing and Using Utilities 5-55Check and Clear of MTBF InformationThe 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. Ifa fault occurs in a component, the NEC Express5800/ft series calculates the MTBF of thecomponent again. If the calculated value is lower than the pre-defined threshold, the NECExpress5800/ft series disables the component to be used.Contact your maintenance personnel if such a symptom as above occurs.IMPORTANT: A disabled component with the MTBF lower than the threshold can beforcibly enabled by clearing the MTBF. However, contact your maintenance personnel for theforced 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 data viewer. Open the tree of thecomponent 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 thecomponent. The table below shows the potential cases in which the MTBF information of acomponent is to be cleared. Contact your maintenance personnel for clearing MTBF information.MTBF clearComponentRemote LocalCPU Module To start the module forcibly afterreplacing a module or if MTBF becamelower than the threshold due tomalfunction and disabled the module.Executable in the following modulestate (this can be viewed on managerscreen):• BrokenMTBF is lower than the threshold.To start the module forcibly after replacinga module or if MTBF became lower thanthe threshold due to malfunction anddisabled the module.Executable in the following module state:• The amber LED is on.• The event indicating that MTBF is lowerthan the threshold is registered in theevent log.PCI Module Same as above Same as aboveEthernetAdapterTo start the module/component forciblyafter replacing a module or if MTBFbecame lower than the threshold dueto malfunction and disabled themodule/component.Executable in the following modulestate (this can be viewed on managerscreen):BrokenMTBF is lower than the threshold.To start the module/component forciblyafter replacing a module or if MTBFbecame lower than the threshold due tomalfunction and disabled themodule/component.Executable in the following module state(this can be viewed on manager screen):• The amber LED is on.• The event indicating that MTBF is lowerthan the threshold is registered in theevent log.SCSI Adapter – –IMPORTANT: You can also clear MTBF information for the PCI module, Ethernet Adapter andSCSI Adapter by unplugging and plugging the live wire of the PCI module.
