Copying a backshift repo from one place to another (appropriate when your backup storage server needs to be upgraded):

• rsync -avplt --delete /mnt/backshift-temporary/ /mnt/backshift-production/

In fact, if you need to merge two backshift repos, you can do that with rsync too, though you perhaps should make sure there are no active backups at the time. Note the absence of the --delete option this time!

• rsync -avplt /mnt/backshift-temporary/ /mnt/backshift-production/

There's no way to split a backshift repo in two (yet?).