Coda, is an Advanced NetworkFileSystem developed by the same people that developed AFS, but with the added goal of Disconnected Operation. The idea of accessing files on the network, and having your computer cache them, then disconnecting from the network, editing the files, then reconnecting later and resyncing all those files back into the "filesystem".

One of the developers of Coda started Intermezzo

Disconnected operation has an annoying side effect. To allow for servers to fall over when editing a file, the entire file is shipped to your client before you edit it. This is ok for source code and so on, but when you are looking at large packet logs, you will feel the burn.