title: How much virtual memory does a 30.5Gb heap(256 Gb memory in total) for Elasticsearch support?
body: <p>Assume I have a machine with 256gb memory and 12TB SSD. Indexed document size is 100TB. I assign 30.5 GB to Elasticsearch heap. The remaining is for Lucene and OS. </p>
  
  <p>My question is, how much virtual memory does Elasticsearch support? To put it in another way, how many indexed documents can I put into the virtual memory for each machine?</p>
  
  <p>Thanks</p>