I have similar on ProLiant DL380 Gen10 that is using the HPE Custom VMware ESXi 6.7 Image.
My Hardware Health sensors have two areas of problems:
System Chassis 1 UID | Unknown state
and three entries for Memory
Memory Device 10 Mem_Stat_C01S11 | Alert state
Memory Device 18 Mem_Stat_C02S03 | Alert state
Memory Device 2 Mem_Stat_C01S03 | Alert state
Server is only using 2x32GB 2933MHz DIMM
Strange thing was that the System Chassis 1 UID issue was present after I upgraded from Esxi 6.5 to 6.7.
Also host was at iLO5 v2.16. I thought that iLO upgrade to latest might clear it.
Now host is at iLO5 v2.30 ... and additionally displaying Memory sensor issues.
When viewing under esxcli ipmi it shows Configuration Error.
System BIOS = U30 v2.36 07/16/2020
iLO5 IML and HPE Support have given the server a clean bill of health.
I also have updated ALL firmware for BIOS, NIC, SPS, Smart Array to latest I can find.
