freebsd stable - Jan 2019 - zfs on hardware raid array

Hi,

I want to use ZFS on a hardware-raid array. I have no option of making it JBOD.
I know it is best to use ZFS on JBOD, but
that possible in that particular case. My question is - how bad of an idea is
it. I have read very different opinions on that subject, but none of them seems
conclusive.

Any comments and especially case studies are most welcome.
All best,
mjb

(Bcc?d to the OP)

You *could* do what I?ve done in the past - make each disk into a single disk
volume presented by the array, then use the presented volumes to make your
mirrors, z2s, etc? I?m not running that anymore, but it was fine and reliable
for years. A failed disk could be replaced in the array, then re-presented to
the OS for rebuild. I actually kept a presented volume back to use as a warm
spare in those circumstances.

A reasonably inexpensive alternative is to replace the controller with one that
permits JBOD.

Best,

Brian

> On Jan 19, 2019, at 10:07, Maciej Jan Broniarz <gausus at gausus.net>
wrote:
> 
> Hi,
> 
> I want to use ZFS on a hardware-raid array. I have no option of making it
JBOD. I know it is best to use ZFS on JBOD, but
> that possible in that particular case. My question is - how bad of an idea
is it. I have read very different opinions on that subject, but none of them
seems conclusive.
> 
> Any comments and especially case studies are most welcome.
> All best,
> mjb
> _______________________________________________
> freebsd-stable at freebsd.org mailing list
> https://lists.freebsd.org/mailman/listinfo/freebsd-stable
> To unsubscribe, send any mail to "freebsd-stable-unsubscribe at
freebsd.org"