A recent addition to Linux’s impressive selection of file systems is Ceph, a distributed file system that incorporates replication and fault tolerance while maintaining POSIX compatibility. Explore the architecture of Ceph and learn how it provides fault tolerance and simplifies the management of massive amounts of data.
How does this compare to Lustre? Lustre will be rewritten, based on ZFS! So your data will, finally, be safe! :o)
This article has a pretty good comparison:
http://www.linux-mag.com/cache/7744/1.html
(Lustre may be heading for ZFS, but Ceph uses btrfs, which has a lot of the same features)
EDIT: also Ceph has a client in the vanilla Linux kernel so that makes live easier on the client-side of it.
Edited 2010-05-06 17:10 UTC