On Thu, Apr 18, 2013 at 7:41 AM, Alain RODRIGUEZ <arodr...@gmail.com> wrote: > I am wondering about the process to grow from one data center to a few of > them. First thing is we use EC2Snitch for now. So I guess we have to switch > to Ec2MultiRegionSnitch. > > c/ I am using the SimpleStrategy. Is it worth it/mandatory to change this > strategy when using multiple DC ?
I suggest you thoroughly read the datastax documentation on cassandra replication. The change you are planning is big - make sure to try it in a test environment first. Also, you might find you don't really need Cassandra's rack aware feature, and can operate using (Gossiping)PropertyFileSnitch. The rack feature is listed as an "anti-pattern" here: http://www.datastax.com/docs/1.2/cluster_architecture/anti_patterns Here are some recent discussions on this list: http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/migrating-from-SimpleStrategy-to-NetworkTopologyStrategy-tp7586272.html http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/migrating-from-SimpleStrategy-to-NetworkTopologyStrategy-tp7481090.html Dane
