Hi there, I'm not sure if this is intended behavior, but I was a bit stumped when I formatted a 30TB volume (12x3TB minus 2x3TB for parity in RAID 6) with XFS and noticed that there were only 22 TB left. I just called mkfs.xfs with default parameters - except for swith and sunit which match the RAID setup. Is it normal that I lost 8TB just for the file system? That's almost 30% of the volume. Should I set the block size higher? Or should I increase the number of allocation groups? Would that make a difference? Whats the preferred method for handling such large volumes? Thanks a lot, Manny _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs