title: what does low level storage management like iRODS exactly for (in fedora-commons)?
body: <p>I am not clear about the actual advantage of having iRODS or any other low level storage management. What are it's benefits exactly and when should we use it?</p>
  
  <p>In Fedora-commons with normal file system low level storage: 
  <strong><em>a datastream created on May 8th, 2009 might be located in the 2009/0508/20/48/ directory.</em></strong></p>
  
  <p>How does iRODS helpful here?</p>