Before any migration, here's the exact safety net to deploy first

Before any migration, here's the exact safety net to deploy first
Most data-loss isn't disaster, it's a confident dev running migrate on the wrong host. Pre-flight:
— Take a FRESH full backup minutes before, not last night's
— Restore that backup to a sandbox and confirm it loads
— Verify the target environment, hostname out loud, twice
— Keep the pre-migration copy locked and immutable for 7 days
— Write the rollback command before you run the forward one
The team that skips the pre-migration backup is the team writing the incident report. Fight me in the comments.