I've recently upgraded several ESXi 4.x hosts to 5.1 and after the upgrade the disks and raid controller are no longer showing in the Health Status section in vSphere. The servers are all Dell PowerEdge 2950's and I've even tried doing a full fresh install which hasn't helped either. Below is a screenshot of the Health Status of the problematic server. I need to get this resolved so our monitoring solution can see the status of the disks/array.
Here is a screenshot of another PowerEdge 2950 still running 4.1 and it is showing the disk and raid controller fine.
Has anyone seen this before? or have any ideas on how to resolve this issue?
Thanks,
Greg