On Wed, Jun 16, 2010 at 3:03 AM, Orvar Korvar < knatte_fnatte_tja...@yahoo.com> wrote:
> "You can't expand a normal RAID, either, anywhere I've ever seen." > Is this true? > > A "vdev" can be a group of discs configured as raidz1/mirror/etc. An zfs > raid consists of several vdev. You can add a new vdev whenever you want. > Close. A vdev consists of one or more disks configured as stand-alone (no redundancy), mirror, or raidz (along with a couple of special duty vdevs: cache, log, or spare). A pool consists of multiple vdevs, preferably of the same configuration (all mirrors, all raidz1, all raidz2, etc). You can add vdevs to the pool at anytime. You cannot expand a raidz vdev by adding drives, though (convert a 4-drive raidz1 to a 5-drive raidz1). Nor can you convert between raidz types (4-drive raidz1 to a 6-drive raidz2). -- Freddie Cash fjwc...@gmail.com
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