title: How to add new nodes in Cassandra with different machine configuration
body: <p>I have 6 cassandra nodes in two datacenters with 16GB of memory and 1TB HD drive.</p>
  
  <p>Now I am adding 3 more nodes with 32GB of memory. will these machines will cause overhead for existing machines ( May be in token distribution )? if so please suggest how to configure these machine to avoid those problems.</p>
  
  <p>Thanks in advance. </p>