title: Number of shards in Solr
body: <p>We are expecting indexes to be created for 6TB of data. Index size would be around 10 GB . 
  1) So how many shards are required?
  2) Because of the hardware limitation I'm thinking to use only 1 Solr machine with number of shards. I have 16GB RAM and 4 core machine. </p>
  
  <p>Kindly let me know your experience on this.  </p>