Snoop-de-dupe
 
  Keep your server's storage space optimized! Snoop-de-dupe will automatically scan your server storage in real-time and display duplicate files in an easy-to-view layout directly within the server’s user Console. Once snoop-de-dupe locates duplicate files then you can respond to them as you choose. You can delete the duplicate files, ignore/keep the duplicate files, or replace the duplicate files with a hard-link (available in WHS/SBS 2011 and Server 2012 Essentials only).  You will be in command of your server storage space like never before!

Read our FAQ and How-To’s to see how snoop-de-dupe can work for you. 
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  Windows Home Server   Home & Small Business Server 2011  
  windows home server   small business server  
         
  Product features:  
     
Supports Windows Home Server 2011 and Windows Home Server V1
  Supports Windows Small Business Server 2011 Essentials and Storage Server 2008 R2  
  Supports Windows Server 2012 Essentials  
Batch-mode to easily manage large quantities of duplicate files
  Localized in both English and German languages  
  Automatic, real-time continuous file de-duplication scanning  
  160-bit SHA-1 de-duplication hash for optimum results  
  Windows Home Server Dashboard/Console integration  
  Pause and Resume operation at any time for maximum efficiency of your server  
  Select any folders of your choosing on your server for de-duplication scanning  
Simple, easy-to-view heads-up status display to monitor progress
Configurable resource limiter (CPU usage and worker thread priority)
Exclude files from duplication based on file name, file size, folder name, and attributes
  Easy to navigate list for: deleting, linking, or ignoring duplicate files  
  Quick-launch feature allows for viewing contents of duplicate files  
  One-click "copy to clipboard" to simplify management and tracking of duplicate files  
  15 day free trial available