We've got three 5.5U2 hosts in total, two of them are in a HA cluster (with no DRS) and the third is in case the cluster dies. The cluster is connected to one Nimble SAN and the third host is connected to a separate Nimble SAN. There's no VMs running on the third host. There's one vCenter 5.5 server VM that is hosted in the cluster and it has all three hosts in it. What we'd like to do is do a fresh install of 6.5U1 to all three hosts and create a new vCenter 6.5U1 server appliance.
I'm guessing that we'd:
1. Move all the VMs over to one of the HA hosts and disable HA.
2. Remove the now-empty host from vCenter.
3. Install 6.5 on the now-empty host.
4. install the vCenter 6.5 appliance on the now-empty host
5. Add all three hosts to the new vCenter 6.5 appliance.
6. Power down the vCenter 5.5 server.
7. Re-enable HA on the new vCenter 6.5 appliance.
8. Move all the VMs over to the 6.5 HA host and disable HA again.
9. Install 6.5 on the second host.
10. Add the second host to vCenter.
11. Re-enable HA between both 6.5 hosts.
12. Install 6.5 on the third host.
13. Add the third host to vCenter.
14. Delete the old vCenter 5.5 VM
Sound about right?
Thanks for your suggestions,
Mark