Reading Time: 3 minutes As written in the previous post, the HCL check is a mandatory step in each major upgrade (and of course also in each new implementation). And one of the aspect to verify is the firmware version that must match the minimum required for the particular version of vSphere: BIOS of physical servers: my recommendation is use always the latest stable version. The issues with old and unsupported (from vSphere) versions could be really hard to identify and troubleshoot… for example on a old IBM server with an unsupported firmware, there was a really strange and […]