Hi Murray,

   Great article.  Can you point me to any roadmap for Change Block Tracking (CBT) within IRIS?  We are expecting to reach over 400TB in size for the IRIS database within the next few years so we need to plan how to manage this growing backup window.  Current technology is Dell PowerMax (source), CommVault Intellisnap which then mounts to a Linux Media Agent then its backed up to an offsite disk based target.  Since we can only use one Media Agent that will require a huge throughput per hour (40TB/hr) to get done within a reasonable timeframe, so it doesn't impact production on the PowerMax during the day.  CBT seems to be the next best way to reduce the window.  Thoughts?