Hi. I have a 4 disk BT Whole Home setup. If I move it to another home, will I need to do anything other Ethernet the "base" disk to the new router? Will the disks interwork without any new setup, or do I have to start the setup from scratch?
The discs will self configure to adapt to the new setup so you won't need to do anything other than rename the discs to match their new locations in your new home.
You'll just need to make sure if you connect to a different router that this is actually configured as a router (some have other modes such as bridge mode) and is running a DHCP server, which most are by default.