You can review these best practices when you restore a cluster.
Power off and delete the existing cluster before restoring to the same infrastructure
If restoring a backup cluster to the same infrastructure, power off and delete the existing cluster to avoid potential MAC and IP address conflicts.
Remove remote collectors and deploy new instances if unavailable
Remove remote collectors that report as down or no longer available to bring the cluster online, then add the replacement remote collectors as needed.
Change the IP Address of Nodes After Restoring a Cluster on a Remote Host if the IPs change before bringing cluster online
After you have restored a vRealize Operations cluster to a remote host, change the IP address of the master nodes and data nodes to point to the new host. See Change the IP Address of Nodes After Restoring a Cluster on a Remote Host.