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From Jack Krupansky <>
Subject Re: How many nodes do we require
Date Fri, 25 Mar 2016 15:45:55 GMT
It depends on how much data you have. A single node can store a lot of
data, but the more data you have the longer a repair or node replacement
will take. How long can you tolerate for a full repair or node replacement?

Generally, RF=3 is both sufficient and recommended.

-- Jack Krupansky

On Fri, Mar 25, 2016 at 11:40 AM, Rakesh Kumar <>

> We have two data centers. Our requirement is simple
> Assuming that we have equal number of nodes in each DC we should be able
> to run with the loss of one DC and loss of at most one node in the
> surviving DC. Can this be achieved with 6 nodes (3 in each). Obviously for
> that all data must be available  in any two nodes. Any pointers on
> replication factor.
> Thanks
> --
> Sent from mobile.

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