Re: [discuss] Recover 6-bay raidz2 pool on a 5-bay system?

[Toomas Soome via illumos-discuss]

> On 25. Mar 2023, at 21:47, Kent Watsen <k...@watsen.net> wrote:
> 
> ZFS Gurus,
> 
> I switched off an OminOS-based server more than a year ago.  I tried to turn 
> the server on last week, but it never does.  Being a system I built myself, 
> I've tried many things to get to turn on.  I don't care if that hardware 
> never works again, but I would like to mount again a pool I had there...
> 
> This server has/had:
>        - an "rpool" on a CF drive.
>        - a raidz2 "tank" pool (6x 3.5 drives).
> 
> I happen to have another machine (also switched off) that I could press into 
> service, which has/had:
>        - an "rpool" on a CF drive.
>        - a raidz2 "tank" pool (3x 3.5 drives).
> 
> I have two-open Sata ports on the motherboard, and so could pretty quickly 
> have 5x bays working.
> 
> My question is, can I plug 5 out of the 6 drives into the new machine and do 
> a `ZFS import tank`?
> 
> Thanks,
> Kent
> 

raidz6 can survive 2 lost disk, 5 of 6 is still good assuming there are no 
corrupted blocks;)

rgds,
toomas
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