If you deployed additional vSphere Replication server instances that you no longer require, you must unregister them from the vSphere Replication appliance before you delete them.
Verify that the vSphere Replication server that you want to unregister does not serve any replications, otherwise the operations fails.
- On the Site Recovery home page, select a site pair and click View Details.
- On the Site Pair tab, select Replication Servers and find the vSphere Replication server in the list.
If you have both vSphere Replication and Site Recovery Manager installed, you can find Replication Servers on the Site Pair tab, under Configure.
- Select the server and click the Unregister icon.
- In the Hosts and Clusters view of the vSphere Client, power off and delete the vSphere Replication server virtual machine.