[OpenIndiana-discuss] ZFS 0+1 across disparate drives

[Michelle]

I'm trying to achieve a resilient way of bringing together all my older
drives for a backup solution using scraps of whatever I can get my
hands on.

I have closing on 12TB of data so even the 10 won't be enough to back
everything up, but this is as much for the exercise of doing it, as
achieving anything solid. It won't be under pressure, but I'd rather
push the envelope and see what I can do.

So how would the command go?

zpool create tank raidz mirror drive1 drive2 mirror drive3 drive4
drive5

...which is where I come unstuck with the 2TB drive in the mix.



On Wed, 2021-12-01 at 11:17 +0000, James wrote:
> On 01/12/2021 08:31, Michelle wrote:
> > Say I was to put a 2tb, three 4tb and a 6tb together (a 2 and two 4
> > would make 10 and the other 4 and the 6 would also make 10)
> > 
> > Would that be possible with ZFS now?
> 
> I think it has always been possible, ask is is sensible?  Try it, if
> you 
> have nothing to loose.  The problem is if one drive fails is takes
> out 
> all of one side of the mirror.
> 
> Why not use 2 separate 4TB mirrors?  4&4 = 4, 4&6 = 4, total 8.  You 
> loose the 2TB drive completely but (guessing) it is the slowest and 
> oldest.  You ignore 2TB of the 6.
> 
> You don't say what you are trying to achieve but it's unlikely you
> have 
> the full 8TB of data, it is unlikely it can't be split.
> 
> 
> 
> 
> 
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