http://www.xtreemfs.org/index.php XtreemFS is a distributed and replicated file system for the Cloud. Distributed: Clients and servers can be distributed world-wide. XtreemFS supports installations across many data centers and is able to handle the failures that occurr in wide-area installations. Clients can mount XtreemFS volumes from anywhere with an Internet connection. XtreemFS is ready for the Cloud, read more... » Replicated: With XtreemFS you can easily and transparently replicate your files across data-centers for high availability, data safety or to reduce latency and bandwidth consumption. Find out more about the replication in XtreemFS »