A Java based Ceph implementation.
"Ceph aims primarily for completely distributed operation without a single point of failure, scalable to the exabyte level, and freely available. Ceph replicates data and makes it fault-tolerant, using commodity hardware and requiring no specific hardware support. As a result of its design, the system is both self-healing and self-managing, aiming to minimize administration time and other costs."
Currently very WIP.