On Sun, 18 Jan 2009, Will Murnane wrote: > That's easy to say, but what if there were no larger alternative? > Suppose I have a pool composed of those 1.5TB Seagate disks, and > Hitachi puts out some of the "same" capacity that are actually > slightly smaller. A drive fails in my array, I buy a Hitachi disk to > replace it, and it doesn't work. If I can't get a large enough drive > to replace the missing disk with, it'd be a shame to have to destroy > and recreate the pool on smaller media.
What do you propose that OpenSolaris should do about this? Should OpenSolaris use some sort of a table of "common size" drives, or use an algorithm which determines certain discrete usage values based on declared drive sizes and a margin for error? What should OpenSolaris of today do with the 20TB disk drives of tomorrow? What should the margin for error of a 30TB disk drive be? Is it ok to arbitrarily ignore 3/4TB of storage space? If the "drive" is actually a huge 20TB LUN exported from a SAN RAID array, how should the margin for error be handled in that case? Bob ====================================== Bob Friesenhahn bfrie...@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer, http://www.GraphicsMagick.org/ _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
