On Thu, Jun 01, 2006 at 02:46:32PM +0200, Robert Milkowski wrote: > btw: what differences there'll be between raidz1 and raidz2? I guess > two checksums will be stored so one loose approximately space of two > disks in a one raidz2 group. Any other things?
The difference between raidz1 and raidz2 is just that the latter is resilient against losing 2 disks rather than just 1. If you have a total of 5 disks in a raidz1 stripe your optimal capacity will be 4/5ths of the raw capacity of the disks whereas it would be 3/5ths with raidz2. Consider however that you'll typically use larger stripes with raidz2 so you aren't necessarily going to "lose" any capacity depending on how you configure your pool. Adam -- Adam Leventhal, Solaris Kernel Development http://blogs.sun.com/ahl _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
