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SERVER PROLIANT DL380 G5 Blinking Power Lights

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SERVER PROLIANT DL380 G5 Blinking Power Lights

 

Was hoping someone could help with an issue that has started happening.  We recently updated the UPS backups to our server/phone systems and seem to be having problems when the UPS goes to battery power.  The server crashes and the power light on the back of the server starts to blink (which is not an option on what the lights are supposed to do in the manual).  The fans also seem to go a bit haywire also (rev up, then off).

 

when on normal power they are green, but when on battery they blink.  I don't think it is a server issue, but possibly the output wave generated by the UPS.  Has anyone come across anything similar?  The UPS (there are 2/one for each power supply on the server) keeps all the other systems up and running (phones/network ports).  The server is the only one that seems to not like the battery power.  Load on each UPS is less than 20% when I unplug the UPS to force it to battery power.