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    I'm in the process of building a WHS.  I am trying to get by using a couple of 200gb harddrives for the server.  I was wondering when the WHS backs up data does it compress the data.  If so, what type of compression ratio can I expect.  I probably have currently approximately 500gb worth of data divided between 3 computers.  Thanks for any help.
    Friday, April 17, 2009 12:40 AM

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    I'm in the process of building a WHS.  I am trying to get by using a couple of 200gb harddrives for the server.  I was wondering when the WHS backs up data does it compress the data.  If so, what type of compression ratio can I expect.  I probably have currently approximately 500gb worth of data divided between 3 computers.  Thanks for any help.
    No, it doesn't compress.  But what it does do is similar to Single Instance Storage.  In other words, if you have a file that is on all 3 computers, it backs up that file when you back up the first computer, then creates pointers for the other computers to the file for the first computer.
    Friday, April 17, 2009 12:51 AM
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    ... and if backing up changed files, only the changed clusters of the file will be stored, which makes backup also more efficient.
    For technical details you can download the Home Computer Backup and Restore technical brief from the WHS Support Site.
    Best greetings from Germany
    Olaf
    Friday, April 17, 2009 8:18 AM
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  • Question
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    I'm in the process of building a WHS.  I am trying to get by using a couple of 200gb harddrives for the server.  I was wondering when the WHS backs up data does it compress the data.  If so, what type of compression ratio can I expect.  I probably have currently approximately 500gb worth of data divided between 3 computers.  Thanks for any help.
    No, it doesn't compress.  But what it does do is similar to Single Instance Storage.  In other words, if you have a file that is on all 3 computers, it backs up that file when you back up the first computer, then creates pointers for the other computers to the file for the first computer.
    Friday, April 17, 2009 12:51 AM
    Moderator
  • Question
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    ... and if backing up changed files, only the changed clusters of the file will be stored, which makes backup also more efficient.
    For technical details you can download the Home Computer Backup and Restore technical brief from the WHS Support Site.
    Best greetings from Germany
    Olaf
    Friday, April 17, 2009 8:18 AM
    Moderator