title: number of nodes in elasticsearch cluster
body: <p>in our university we have an elasticsearch cluster with 1 Node. Now we have money to install more powerful server. We produce 7-10 millions accesslogs / day. </p>
  
  <p>What is better to create a cluster with:</p>
  
  <p><strong>a.</strong>  3 powerful server each 64GB and 16 CPU + SSD.<br>
  <strong>b.</strong> to have 14 not so powerful server each 32GB and 8CPU +SSD<br>
  ps: a &amp; b have the same price.   </p>
  
  <p><strong>c.</strong> may be some recommendation?</p>
  
  <p>Thank you in advance</p>