Openfiler is a browser-based network storage management utility. Linux-powered, Openfiler delivers file-based Network Attached Storage (NAS) and block-based SAN in a single framework. It supports CIFS, NFS, HTTP/DAV, FTP, and iSCSI.
jBackup Framework is very simple and easy to use framework build in Java, which enables developers to create applications that can backup, restore, update, remove, track changes to files, schedules jobs for execution and other useful stuff.