Migrate a d0pe install to a new box with its data — and rebind the license.
You'll move a d0pe install when you outgrow the disk, change datacenter or provider, or consolidate boxes. It's a backup, a restore, a license rebind, and a DNS change — in that order. Because the license is bound to the machine, the rebind step is the one people forget.
Your license is bound to the first machine's hardware id, and a heartbeat from a different machine is rejected on purpose (it's what stops a copied disk from running two instances). A migration is legitimate, so Rebind clears the binding for you — do it after the old server is down, so the new one binds cleanly.
Restore moves the data. Rebind moves the license. Do both, or the new box comes up read-only.