Sun is buying Cluster File Systems, Inc. (CFS), of Boulder, Colorado, the firm who makes the high performance parallel file system, Lustre.
Sun reached a high place on the TOP500 supercomputer list this year with TSUBAME, a supercomputer in the Tokyo Institute of Technology (Tokyo Tech) at their Global Scientific Information and Computing Center. Lustre is a key ingredient of TSUBAME.
Lustre servers handle hundreds of GigaBytes per second in I/O coming from clusters with many 10,000's of client systems, hundreds of servers and petabytes of storage.
Just recently, CFS, announce that it use the OpenSolaris ZFS disk file system on Lustre servers running Linux operating systems.