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Dear All, (Apologies for the cross-post but I wanted to get as much input as possible!) Basically, I want to have a filesystem that presents a single POSIX interface but allows the easy addition and removal of storage behind the scenes. Quotas would be needed as well as maybe some redundancy (though as I'll be using RAID 6 boxes, this isn't as important). Ease of setup and admin would also be a plus! Basically, I'd like to know what of the usual suspects (AFS/GPFS/Lustre/etc. etc.) would be best for a fairly lightweight and easy to maintain Tier3 system. What do other people use? Anything to consider that I will probably have forgotten? Any comments/suggestions more than welcome! Thanks, Mark P.S. At present we just have mounted NFS disks in various places which works but is a bit clunky and makes sharing out data between users/groups a pain :)