Our "enterprise" is about 300TB.. maybe a bit more... You are correct that most of the time we grow and not shrink... however, we are fairly dynamic and occasionally do shrink. DBA's have been known to be off on their space requirements/requests.
There is also the human error factor. If someone accidentally grows a zpool there is no easy way to recover that space without down time. Some of my LUNs are in the 1TB range and if that gets added to the wrong zpool that space is basically stuck there until i can get a maintenance window. And then I'm not that's even possible since my windows are only 3 hours... for example what if I add a LUN to 20TB zpool. What would I do to remove the LUN? I think I would have to create a new 20TB pool and move the data from the original to the new zpool... so that would assume I have a free 20TB and the down time.... This message posted from opensolaris.org _______________________________________________ zfs-discuss mailing list email@example.com http://mail.opensolaris.org/mailman/listinfo/zfs-discuss