On 19/05/2026 17:44, Anthony D'Atri wrote:


We initially selected 8+3 over 4+2 because we expect rebuilds to take very long 
with nodes this big and we don't want to loose redundancy

Fair enough.  You get more nines with m=3 for sure, though the wider profile 
itself will mean slower scrubs and recovery.  I suspect you set 
mon_osd_down_out_subtree_limit?

We didn't configure that settings before.

I see that by default it is configured at rack level.

What benefit it would have for out deployment?
I don't quite understand it's description in the documentation.
Should it be configure to higher level than failure domain of the pool?
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