ZFS stripe to raidz1

[Anders Jensen-Waud]

On Wed, May 13, 2015 at 11:25 PM, Johan Hendriks <joh.hendriks at gmail.com>
wrote:

>  Anders Jensen-Waud schreef op 13/05/15 om 14:37:
>
> Hello
>
> I bought two 2TB drives and would like to see them up in a 4TB stripe for now. Later, I would like to add redundancy to the stripe by adding one more 2TB disk, effectively ending up with a 4TB raidz1.
>
> Is this possible on FreeBSD 10.1 without having to recreate the entire pool from scratch?
>
> Thanks
>
> Anders
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>
> Not like you want it.
>
> You can start with two disks and create a stripe accross both disks. Keep
> in mind that if one fails you will loose all your data!
> Later on you can mirror disk one by *attaching* a disk to this vdev. But
> this way you still have no redundancy. If the second disk/vdev fails, you
> still loose all data. You need to *attach* a second disk to the second
> vdev also. That way you can loose a disk per mirrored vdev. So you will
> need 4 disks.
>
>
Thank you for the advise.

I am thinking of just mirroring the two disks at the moment and then adding
2 x 2TB later (in a second mirror vdev), and stripe the two vdevs. Is that
possible without having to rebuild the entire array?





> regards
>
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