Petabytes on a budget: How to build cheap cloud storage
I always thought it was best to focus on what I did best (application software) and leave the infostructure to others.  Until I saw this:  Raw Drives      $81,000
  Backblaze      $117,000
  Dell           $826,000
  Sun          $1,000,000
  NetApp       $1,714,000
  Amazon       $2,806,000
  EMC          $2,860,000

I had no idea.  Kinda makes one rethink what business they want to be in.