How much disk space do I have in a 3-way mirror? Having three disks of equal space, for me makes no sense having three disks mirrored, or do I get something wrong?
> Hi Andres, > > For general ZFS best practices info, please see this site: > > http://www.solarisinternals.com/wiki/index.php/ZFS_Best_Practices_Guide > > For your specific questions, creating a mirrored ZFS configuration > provides > the most flexibility if you want to change the device configuration. > > For example, you could start with a two-way mirror, like this: > > # zpool create tank mirror c1t0d0 c2t0d0 > > Then, attach another disk for a 3-way mirror: > > # zpool attach tank c2t0d0 c3t0d0 > > If you get more disks, add another 3-way mirror: > > # zpool add tank mirror c3t0d0 c4t0d0 c5t0d0 > > Even better, add some spares: > > # zpool add tank spare c2t1d0 c3t1d0 > > If you change you mind, go back to two, 2-way mirrors: > > # zpool detach tank c3t0d0 > # zpool detach tank c5t0d0 > > If you want to replace the existing disks, with larger disks, then: > > # zpool replace tank c1t0d0 c6t0d0 > > and so on, until all the disks are replaced. > > Similar examples are available in the ZFS Administration Guide: > > http://docs.sun.com/app/docs/doc/817-2271/gavwn?a=view > > You cannot currently remove a device except to replace a disk > in a mirrored or RAIDZ configuration, or detach a disk in a mirrored > configuration. > > Cindy > >> Is there any best practice summary for managing ZFS >> pool, specifically >> related to adding/removing/replacing drives or >> changing layout? >> >> On 3/18/08, Andre Lue <[EMAIL PROTECTED]> wrote: >> > Yes you have to backup the data and recreate the >> pool then restore. >> > >> > >> > This message posted from opensolaris.org >> > _______________________________________________ >> > storage-discuss mailing list >> > [email protected] >> > >> http://mail.opensolaris.org/mailman/listinfo/storage-d >> iscuss >> > >> >> >> -- >> Regards, >> Andrey >> _______________________________________________ >> storage-discuss mailing list >> [email protected] >> http://mail.opensolaris.org/mailman/listinfo/storage-d >> iscuss > > > This message posted from opensolaris.org > _______________________________________________ > storage-discuss mailing list > [email protected] > http://mail.opensolaris.org/mailman/listinfo/storage-discuss > _______________________________________________ storage-discuss mailing list [email protected] http://mail.opensolaris.org/mailman/listinfo/storage-discuss
