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I have Windows Home Server 2011 automatically backing up my PC. The relevant specifications are that my 500GB system drive is a software mirror and my PC is running Windows 7 Ultimate SP1.

I expected WHS to backup 500GB of data, but it is backing up 1TB of data. Here is an image of what's going on:

enter image description here

I would really like to know:

  • If I had to restore from a backup, would I need to first setup another RAID-1 mirror?
  • If I were to break the mirror while it's healthy, how would the backup feature react?
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