One of our R815 servers (fitted with quad AMD 6380 Opteron CPUs) halted and powered off during the night last week and on arrival in the server room, I noticed the LCD display had turned orange with a warning about a CPU voltage regulator being out of limits. After disconnecting the AC power cords, waiting a few seconds and reconnecting I powered the server back on again and the LCD message cleared and the server booted normally.

So I ran the UEFI hardware diagnostics and it came up with one error:

Test Results: fail

Device : IPMI

test : IPMI System_Event_Log_Check

Error Code 2900:0221

Msg: IPMI - Nov 04 18:08:34 2015: processor:: Voltage sensor (1.2V VDDR)

state asserted "CPU1"

Is this something to be worried about since the server has been running at full load on all 64 CPU cores for 5 days without any problems? Or does the error message actually refer to the IPMI/BMC processor CPU and not one of the Opteron CPUs?

Andy