Thank you. This is realy helpful.
The main difficulty is that the downtime for some VMs can be just a few minutes.
So the plan can be :
1. build the new vCenter
2. reconfigure vSAN and other vSphere components
- during this stage Horizon and already existent VMs work but without provisioning (I hope so)
3. configure Horizon to work with new vCenter
4. create new automated linked clone pools
5. migrate users from old pools to the new ones
6. migrate full clones
