2-86 Sun StorEdge 5310 NAS Troubleshooting Guide • December 2004
And then the following message.
07/08/04 11:00:38 I sysmon[51]: Ctlr0: write-back cache
disabled
If the power is returned to the UPS, you will see the following message:
07/08/04 11:01:09 I sysmon[51]: UPS: AC power restored
Front LCD panel message: “P21 Power 1 Failed”.
This is an indication that one of the two power supplies has failed.
Verify that one or more of the following indicators are present:
The system status light on the front of the StorEdge is flashing green.
The system status light on the back of the StorEdge is flashing green.
The log should have a message “power supply unit 1 has failed”
Front panel may have message in display “P21 power 1 has failed”
The StorEdge has 2 power supplies located in the back of the unit. The failed power
supply may have a solid red LED.
If both power supply lights are green, see hardware referen ce guide for unit
replacement loca tions.
Replace the failed power supply.
The light on one of the power supplies is amber.
This is an indication of a failed power cord. Verify the following:
Verify that one or more of the following indicators are present:
The system status light on the front of the StorEdge is solid amber.
The system status light on the back of the StorEdge is solid amber.
Verify that the cord is plugged into an AC source.
Reseat the power cord in the power supply.
Replace the power cord if reseating does not fix the problem.
Replace the power supply if power cord replacement does not work.