title: Storing commit log in an ephemeral disk?
body: <p>In EC2, if stopped and started, or rebooted, the data on the ephemeral disk will be erased.</p>
  
  <p>The question is, is it a good idea to put the commitlog on an ephemeral disk?</p>
  
  <p>What if the instance get rebooted and lost the commitlog, what will happen?
  I already have replication factor to 2, using <code>NetworkTopologyStrategy</code> that is availability zone aware.</p>
  
  <p>Please advice</p>