On Wed, 30 Jul 2008, Justin Vassallo wrote: > > Does that imply that when you add zfs automatically load-balances across its > mirrors?
Yes, ZFS load balances across mirrors. If you add individual drives to a ZFS pool, it will load-share across the drives. You can then add mirrors for those drives and now you have load-share plus redundancy. In addition to redundancy, a read can be done from either drive so there is more read performance. > Does that also mean that when the drives in a mirror are not as fast as each > other, the fs speed will not be hindered by the slower drive? It is my understanding that the write speed to a pair will ultimately be limited by the speed of the slowest drive so you should try to make sure that the drives in a mirror are similar. It may be that zfs is willing to buffer data if a drive in a mirror pair is slow since it has the smarts to catch it up later. Bob ====================================== Bob Friesenhahn [EMAIL PROTECTED], 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
