Syncing Database for Server Transition
S1 = old server, S2 = new server


Full Backup S1
Restore to S2 and with NOrecovery
Block ALL data changing connections to S1 (e.g. change web connection password)
Diff backup on S1
Restore diff to S2 with recovery - S2 will now be ready
Enable connections to S2 ( don't forget to reset any changed passwords back to the originals)