Our IT team is in the process of upgrading/migrating our current SQL databases to a new machine with a completely new name. Since the machine is going to have a new name, all of our GIS connections are going to break. I'm not so worried about ArcDesktop, that's fairly easy to fix (if just a bit tedious). I'm really worried about our ArcGIS Enterprise deployment.
We have one Enterprise deployment that includes Server, Portal, and Datastore. And then we have one stand-alone ArcGIS Server. All are 10.7.1.
I've tried to search and I guess I'm just not using the correct keywords because I can't find the answers I need. What do I need to change on the backend of ArcGIS Server, Portal, and Datastore once the migration has happened to make sure they are pointed to the correct SQL machine and data?