FreeBSD 9/ZFS: Striped Pool (2 disks) migrating to mirror (onto additional disk)

Christer Solskogen christer.solskogen at
Wed Jan 26 09:21:54 UTC 2011

On Wed, Jan 26, 2011 at 9:42 AM, O. Hartmann
<ohartman at> wrote:

> My question is: is it possible to migrate the two-disk pool without data
> loss into a mirrored pool by adding the one 2TB-disk?

No, you cant create a two-way mirror of three disks with ZFS. The only
way of doing what you want by creating a gmirror (or by hardware raid)
of the two 1TB disks.


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