Sounds like a plan Ketih.

And the additional need for a SLOG (like ZeusRam) is def. not required
because of my pool being set as sync=disabled ?


On Mon, Jul 7, 2014 at 8:12 PM, Keith Wesolowski <
[email protected]> wrote:

> On Mon, Jul 07, 2014 at 08:06:54PM +0200, Ibrahim Tachijian wrote:
>
> > We are planning on purchasing 12x 4TB disks. Using 1 or maximum of 2 as
> > hot-spares. We are going to aim for a mirror setup, however we are unsure
> > which setup is going to give the best performance for our use case.
> >
> > 10x4TB HDDs 5 vdevs (2 disks in each vdev).
> > 9x4TB HDDs  3 vdevs (3disks in each vdev).
> > 10x4TB HDDs in 2 vdevs (5 drives in each vdev).
> >
> > Which of the above mentioned configuration would be the best for our
> > scenario?
>
> I honestly don't even know if 5-way mirroring is supported, but given
> your use case, there's no reason to do it.  Just do 5x2-way with 2
> spares and call it done.  You should be overspecified for the
> performance you need, and you'll have extra capacity as well.  3x3
> doesn't get you to your 15 TB requirement.
>



-- 
Ibrahim Tachijian



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