IBM has been busy lately developing it's own cloud products as it attempts to re-invent itself. In the past few days they announced an extension to their GPFS (Global Parallel File System), and rebranded it as elastic storage:
http://www-03.ibm.com/systems/technicalcomputing/platformcomputing/products/gpfs/
It will be interesting to see how this fares against Redhat's Gluster-based Open Storage offerings, however the future direction is now clearly away from tradition dedicated SAN and NAS devices. Having said that I think there will be a role for both because Gluster was not designed for multiple high-speed communications as SAN was, but it is the lear winner on cost and flexibility.
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