title: analyzed or not_analyzed, what to choose
body: <p>I'm using only kibana to search ElasticSearch and i have several fields that can only take a few values (worst case, servername, 30 different values).</p>
  
  <p>I do understand what analyze do to bigger, more complex fields <a href="https://stackoverflow.com/questions/34404771/analyzed-vs-not-analyzed-storage-size">like this</a>, but the small and simple ones i fail to understand the advance/disadvantage of anaylyzed/not_analyzed fields. </p>
  
  <p>So what are the benefits of using analyzed and not_analyzed for a "limited set of values" field (example. servername: server[0-9]* , no special characters to break)? What kind of search types will i lose in kibana? Will i gain any search speed or disk space?</p>
  
  <p>Testing on one of then i saw that the .raw version of the field is now empty but kibana still flags the field as analyzed, so i find my tests inconclusive.</p>