I had to recently perform a VSAN cluster migration from one vCenter Server to another. This sounds like a daunting task but ended up being very simple and straight forward due to VSAN’s architecture to not have a reliance on vCenter Server for its normal operation(nice on VMware!) As a bonus the VMs does not need to be powered off or loose any connectivity.(bonus!)
Steps to perform:
- Deploy a new vCenter Server and create a vSphere Cluster
- Enable VSAN on the cluster.
- Install VSAN license and associate to cluster
- Disconnect one of the ESXi hosts from your existing VSAN Cluster
- Add previously disconnected Host to the new VSAN Cluster on your new vCenter Server.
- You will get a warning within the VSAN Configuration page stating there is a “Misconfiguration detected”. this is normal due to the ESXi not being able to communicate with the other hosts in the cluster it was configured with.
- Add the rest of the ESXi hosts.
- After all the ESXi are added back the warning should disappear.