Date: Thu, 30 Dec 2010 13:18:06 +0100 From: =?UTF-8?Q?G=C3=B3t_Andr=C3=A1s?= <andrej@antiszoc.hu> To: Damien Fleuriot <ml@my.gd> Cc: freebsd-stable@freebsd.org Subject: Re: ZFS - moving from a zraid1 to zraid2 pool with 1.5tb disks Message-ID: <cce29d8a7249d9cb21fd80b7cdfc2a23@127.0.0.1> In-Reply-To: <4D1C6F90.3080206@my.gd> References: <4D1C6F90.3080206@my.gd>
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Hi, I think it's enough to have 2 parity drives with raidz2. If a drive fails another two has to fail for data loss. However, keep in mind that raid (in any form) is not instead of backups. I have a setup where a 8TB RAID5 is the main backup and serves as file server for not important things AND there's a 3TB RAID5 in a different machine for secondary backups. Regards, Andras On Thu, 30 Dec 2010 12:40:00 +0100, Damien Fleuriot <ml@my.gd> wrote: > Hello list, > > > > I currently have a ZFS zraid1 with 4x 1.5TB drives. > The system is a zfs-only FreeBSD 8.1 with zfs version 14. > > I am concerned that in the event a drive fails, I won't be able to > repair the disks in time before another actually fails. > > > > > I wish to reinstall the OS on a dedicated drive (possibly SSD, doesn't > matter, likely UFS) and dedicate the 1.5tb disks to storage only. > > I have ordered 5x new drives and would like to create a new zraid2 > mirrored pool. > > Then I plan on moving data from pool1 to pool2, removing drives from > pool1 and adding them to pool2. > > > > My questions are as follows: > > With a total of 9x 1.5TB drives, should I be using zraid3 instead of > zraid2 ? I will not be able to add any more drives so unnecessary parity > drives = less storage room. > > What are the steps for properly removing my drives from the zraid1 pool > and inserting them in the zraid2 pool ? > > > Regards, > > > dfl > > _______________________________________________ > freebsd-stable@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-stable > To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org"
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