> It seems to me that with 2 datacenters, if one datacenter is lost, > the reads/writes to cassandra will fail in the surviving datacenter > because of the N/2 + 1 distribution of replicas. In other words, you > need more than half of the replicas to respond but in the case of a > datacenter loss you would only ever get 1/2 to respond at best.
So just to go back to the original post: My interpretation of this was that you wanted to survive in *BOTH* data centers, not just a primary one. If the latter is the case, it is indeed possible as was just pointed out (assuming no nodes are otherwise down in the primary data center). -- / Peter Schuller
