Hello Adam, Friday, June 2, 2006, 12:10:47 AM, you wrote:
AL> 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? AL> The difference between raidz1 and raidz2 is just that the latter is AL> resilient against losing 2 disks rather than just 1. If you have a total AL> of 5 disks in a raidz1 stripe your optimal capacity will be 4/5ths of the AL> raw capacity of the disks whereas it would be 3/5ths with raidz2. Consider AL> however that you'll typically use larger stripes with raidz2 so you aren't AL> necessarily going to "lose" any capacity depending on how you configure your AL> pool. If I have 6 disks - wouldn't a pool with 2x raidz1 (3 disks) be actually faster than a pool with raidz2 (6disks)? (many small random reads)? I know that redundancy with raidz2 would be better as any 3 disks can fail while with 2xraidz only one disk from each raidz1 group can fail. -- Best regards, Robert mailto:[EMAIL PROTECTED] http://milek.blogspot.com _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
