Re: X4100 mysterious failure

I think I the same problem as yours.

We have two X4100M2 servers delivered one month ago. They came with latest SP firmware 1.1.8 and BIOS version 039. The servers are connection to an APC UPS.

We noticed the problem one day when the two servers were switched off mysteriously at same time. The UPS log showed that there was a power outage that lasted for just a second. The SP processors also log recorded something like this:
ID = 1100 : Wed Sep 19 16:51:51 2007 : IPMI : Log : critical : ID = 1f5 : 09/19/2007 : 16:51:51 : Power Supply : ps0.pwrok : State Deasserted
ID = 1101 : Wed Sep 19 16:51:53 2007 : IPMI : Log : critical : ID = 1f6 : 09/19/2007 : 16:51:53 : Power Supply : ps1.pwrok : State Deasserted

The same UPS had other loads including an Ethernet switch and a SPARC workstation. All were OK and did not reboot or switched off themselves.

We simulated a power outage again by disconnecting the UPS from the main power line. The two X4100M2 servers simply switched themselves off at the instance when the UPS transfered from main line power to battery power.

Strangely the SP processors of the two servers were not reset or rebooted. Our login sessions were still there.

So it appeared to me that the power supplies of the servers survived the power outage, but there was some kind of circuity that switched the servers off when abnormal power conditions were detected.

I have reported it to Sun and waiting for their response.
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