Recieved an NMI - Undetermined Source on 2 hosts while patching our ESXi Servers.
This affected 2 of our DL380 G5 with Xeon 5550 CPU's
NMI is a non maskable interrupt , so i immediately assumed it was a hardware issue
when i saw the first host fail , when the second host failed i thought it was too much of a coincidence.
As the hardware was all on the HCL for ESXi i knew it wasnt unsupported hardware.
I noticed the BIOS firmware on both 380 G6's was the same very out of date (late 09) version, i downloaded the current version (06/07/2011) I flashed the BIOS and this resolved the problem.
THank you very much it save me some investigation time ! ;)
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