[GitHub] wohali commented on issue #338: Fix ambiguity in documentation on shards and replicas

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wohali commented on issue #338: Fix ambiguity in documentation on shards and replicas
URL: https://github.com/apache/couchdb-documentation/pull/338#issuecomment-429069325
 
 
   This isn't accurate either, unfortunately. I think we need a more complete rewrite here.
   
   If you have 4 copies of a shard, `n=4`, then you can still have 100 nodes in your cluster - but that specific shard replica will live at most on 4 of those nodes. If you have `q=8` on top of your `n=4`, then you will use a maximum of 8 x 4 = 32 nodes in a 100 node cluster. Again, this is fine - if you had 4 databases with `q=8` and `n=4` you'd have at least one shard replica on every node, with some nodes having 2 replicas.

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