Hi!
we have a small Vmware center with 20 hosts and 2 DELL servers running 5.0 on both esxi and vcenter. A SAN is supplied through 2 Equallogic 6100 boxes (where all VMs reside).
The vCenter is running as a virtual machine.
I am researching upgrading this to 5.5.
What is the best practise for upgrading small installations like this one?
Maybe something like this(?):
1. Deregister physical hosts from the 5.0 vcenter
2. Decomission the vCenter server
3. Install a new server out of the box with version 5.5. I assume it is OK with the built in database? What about certificates? Do we have to buy a certificate to use 5.5?
4. Register the physical hosts again and recreate configs/settings
5. Upgrade esxi servers to 5.5
... or something completely different?
Where will we run into problems?
What should we think about?
Any input is welcome ;-)
cheers
/Christer