zfs on hardware raid array

[Brian Bilbrey]

(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
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