Spontaneous reboots of ESXi 5

[Razorblade12]

Hello,

I have an ESXi 5 build 768111.

Every now and then the server crashes and reboots. Most of the time this happens at night and only if one particular VM is running.

This particular VM is a Windows 7 x64 SP1 with 4GiB vRAM and 4 vCPU

Eight VMs are running on the server. (Linux, Windows Server 2008 R2 and one Windows 7 😉 ).

How can I find the cause of the crash/reboot? I have the syslogdir on one of the datastores so I have access to all the logfiles. But I can not find any errors in there.
Also I can't find any dump-files. So this does not seem to be a PSOD.

Any help is appreciated 🙂

[schepp]

Hi,

did you take a look at this kb article?  http://kb.vmware.com/kb/1019238

Regards

[Razorblade12]

Hi Tim,

thanks a lot for that link.
I'll have a look, this looks quite interesting.

[Razorblade12]

SOLVED

No dumps and no logs were created upon reboot, so it was quite difficult to find out what went wrong.

But in the end it turned out to be a faulty RAM.

With ECC enabled the server rebooted when testing the RAM with Memtest. With ECC disabled Memtest showed errors.

Thanks