The previous configuration for my server was
4x 500GB Drives, 3x 2TB Drives, 1x 480GB SSD
and I replace 3 of the 500GB with SSD to look like
1x 500GB, 3x 2TB, 4x 480GB SSD.
The previous configuration worked fine. After the upgrade none of the SSD's were showing up as drives. I took out the 3 SSD's I installed and magically the 4th one appeared. It appears that ESXi is only seeing one SSD at a time. Is there something I'm missing here? All SSD's are in Icy Dock containers and the machine is a Dell Poweredge 2900. All help greatly appreciated?