Re: why was osd pool default size changed from 2 to 3.

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Am 23.10.2015 um 20:53 schrieb Gregory Farnum:
> On Fri, Oct 23, 2015 at 8:17 AM, Stefan Eriksson <stefan@xxxxxxxxxxx> wrote:
>
> Nothing changed to make two copies less secure. 3 copies is just so
> much more secure and is the number that all the companies providing
> support recommend, so we changed the default.
> (If you're using it for data you care about, you should really use 3 copies!)
> -Greg

I assume that number really depends on the (number of) OSDs you have in your crush rule for that pool. A replication of
2 might be ok for a pool spread over 10 osds, but not for one spread over 100 osds....

Corin

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