I currently have 2 clusters, both containing 5.5 hosts. Cluster A hosts the brunt of my servers, cluster B hosts a couple servers, but is primarily used as a off-site backup location for all my Veeam replicas of the VMs in cluster A.
The hosts in cluster B are getting a little long in the tooth, and I found that there raid controllers are not compatible with ESXi 6.0.
Will I run in to any issues upgrading cluster A to ESXi 6.0 while leaving cluster B on ESXi 5.5? I plan on replacing those older servers soon, but I was hoping to get this upgrade process under way.
Best Answer
You won't run into any problems with this as long as you don't upgrade your virtual machines' hardware versions beyond what 5.5 can accept.