On Wed, 23 Jul 2008, Brandon High wrote: > > With raidz2, you can grab any two disks. With mirroring, you have to > grab the correct two. > > Personally, with only 4 drives I would use raidz to increase the > available storage or mirroring for better performance rather than use > raidz2.
If mirroring is chosen, then it is also useful to install two interface cards and split the mirrors across the cards so that if a card (or its driver) fails, the system keeps on running. I was reminded of this just a few days ago when my dual-channel fiber channel card locked up and the system paniced since the ZFS pool was not accessible. With two interface cards there would not have been a panic. With raidz and raidz2 it is not easy to achieve the system robustness possible when using mirrors. 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
