[Oz Cello]

Currently with separate libraries the libraries still share the same storage space. I think Mike is working on a way to allow separate libraries to be stored in separate locations but I don't think that is possible yet. It is however possible to backup libraries individually, and to sync them to a backup location individually. If what you need is a separate storage location then perhaps using separate libraries with shared backups would work? If not then it's possible that Mike's planned 'versioning' function might provide the functionality you're looking for but I think it's going to be a while before that's available.
Guy