In general, you should expect to keep the host names, FQDNs, and IP addresses that you planned for vRealize Automation systems. Some post-installation changes are possible but can be complicated.
If you change the host name of the Windows machine that hosts the IaaS SQL Server database, see Configure the SQL Database for a New Host Name.
When restoring IaaS components, renaming a host can affect the IaaS Web host, Manager Service host, or their respective load balancers. For more information, see Restore the IaaS Website Service or Web Load Balancer and Restore the Manager Service or Manager Service Load Balancer.
To change a vRealize Automation appliance host name or IP address, see the following sections.