title: MongoDB data remove - reclaim diskspace
body: <blockquote>
    <p><strong>Possible Duplicate:</strong><br>
    <a href="https://stackoverflow.com/questions/4555938/auto-compact-the-deleted-space-in-mongodb">Auto compact the deleted space in mongodb?</a>  </p>
  </blockquote>
  
  
  
  <p>My understanding is that on delete operations MongoDB won't free up the disk space but would reuse it as needed.</p>
  
  <ol>
  <li>Is that correct?</li>
  <li>If not, would I have run a repair command? </li>
  <li>Could the repair be run on a live mongo instance?</li>
  </ol>