Server : RH2288 V3
OS : ESXI 5.5
symptom : ESXI server installed on RH2288 V3 got freeze twice in a week
1- after we have checked the logs we found that server has no hardware error.
2- we found that BIOS need to be upgraded to latest version as EXSI freeze issue fixed in latest BIOS version
problem fixed after customer upgraded the BIOS to latest version.
Current BIOS version for RH2288 V3 is V130
latest BIOS version for RH2288 V3 is V156
BIOS upgrade guide :