How are replicas spread in default crush configuration?

[Kevin Olbrich <ko@xxxxxxx>]

Hi,

just to make sure, as I did not find a reference in the docs:

Are replicas spread across hosts or "just" OSDs?

I am using a 5 OSD cluster (4 pools, 128 pgs each) with size = 2. Currently each OSD is a ZFS backed storage array.

Now I installed a server which is planned to host 4x OSDs (and setting size to 3).

I want to make sure we can resist two offline hosts (in terms of hardware).

Is my assumption correct?

Mit freundlichen Grüßen / best regards,
Kevin Olbrich.

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