Dell PowerEdge R710 Memory Error During POST

I noticed that one of my many brand new Dell PowerEdge R710 servers was generating an error during POST that said, “Warning: Unsupported memory configuration detected. The memory configuration is not optimal.”

Well that doesn’t look right. Looking in the BIOS under memory settings I see that Memory Operating Mode is set to Optimizer Mode.

Yeah…that’s not right. Shame on Dell for sending this out wrong. Let’s change that to Advanced ECC Mode.

Rebooted & no more error.