Hi All, actually the drives are identical and approximately 34GB in formatted in size. The solution I eventually took was to reinstall the system and select the 2 disks in the installer and the mirror is created.
Unfortunately, there were other complexities in the process. ZFS boot disks require an SMI label. So I had to relabel the disk using the format -e command to get the option to write an SMI label as ZFS had left an EFI label on the disk. Unfortunately all the installer tells you is that the label is invalid. After the reinstall this is what format looks like: 0. c0t0d0 <SUN36G cyl 24620 alt 2 hd 27 sec 107> /[EMAIL PROTECTED],4000/[EMAIL PROTECTED]/[EMAIL PROTECTED],0 1. c0t8d0 <SUN36G cyl 24620 alt 2 hd 27 sec 107> /[EMAIL PROTECTED],4000/[EMAIL PROTECTED]/[EMAIL PROTECTED],0 If I add a 3rd identical disk: 0. c0t0d0 <SUN36G cyl 24620 alt 2 hd 27 sec 107> /[EMAIL PROTECTED],4000/[EMAIL PROTECTED]/[EMAIL PROTECTED],0 1. c0t8d0 <SUN36G cyl 24620 alt 2 hd 27 sec 107> /[EMAIL PROTECTED],4000/[EMAIL PROTECTED]/[EMAIL PROTECTED],0 2. c0t9d0 <SEAGATE-ST336605LSUN36G-0638-33.92GB> /[EMAIL PROTECTED],4000/[EMAIL PROTECTED]/[EMAIL PROTECTED],0 Note the names are different but it matches c0t8d0's description before the mirror was built. So it appears that the instructions that say all you have to do is attach the disk are insufficient when it comes to making a mirrored boot disk under OpenSolaris. Maurice Castro On 21/06/2008, at 9:35 AM, Brandon High wrote: > On Fri, Jun 20, 2008 at 4:12 PM, John-Paul Drawneek > <[EMAIL PROTECTED]> wrote: >> These 18gb disks? > > It looks like they're 36GB: > 0. c0t0d0 <SUN36G cyl 24620 alt 2 hd 27 sec 107> > ^^^ > 1. c0t8d0 <SEAGATE-ST336605LSUN36G-0238-33.92GB> > ^^^ ^^^^^^^ > > It also looks like they are not identical drives. > > -B > > -- > Brandon High [EMAIL PROTECTED] > "The good is the enemy of the best." - Nietzsche > _______________________________________________ > zfs-discuss mailing list > zfs-discuss@opensolaris.org > http://mail.opensolaris.org/mailman/listinfo/zfs-discuss _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss