Ramblings of a Home Server User

April 22, 2007

What is Drive Extender?

Filed under: Uncategorized — Tom @ 2:10 pm

So I’ve seen some confusion around what Drive Extender (DE) is and how it works. So I’ll give a brief explanation of DE.

 From the Windows Home Server FAQs :

Drive Extender (DE for short) is a technology behind easily adding and removing hard drives on the server through the Console. Drive Extender (DE) allows you to easily add multiple Internal drives, USB 2.0 Drives and Firewire Drives to your storage by simply connecting the drive then in the Console selecting the drive and clicking add. You can remove your hard drive by going into the Console, selecting the hard drive you wish to remove, and clicking remove. Windows Home Server with the Drive Extender work great, but it is best to not make a habit of continually removing and adding hard drives.  It was designed more so that your storage grows with you and your data, easily.”

How does Drive Extender work?

Drive Extender works by creating a storage pool of all the hard drives that you have connected to your system. When you copy files to your home server Drive Extender takes the data and then “balances” it across all of your drives. If you turn duplication on, it further “balances” the data by duplicating it across all of your available storage. One note about Drive Extender is that wnen you copy data you are limited as to how much data you can copy at one time by the amount of free space on the System Drive DATA partition. Say you have 18 GB of free space and you are trying to copy 20 GB of data to your Home Server it will fail because what happens is that all of the data you copy originates on the DATA partition and then is spread across all of your drives.

Hope that helps. 🙂  If you have any questions or concerns, please feel free to contact me.


1 Comment »

  1. Does it make much difference that the USB connection is slower than the internal SATA connection? Is it better to add additional internal drives – or does it not make that much difference? Is there a limit on the number of drives that may be added?

    Comment by Ronald Lyster — September 2, 2008 @ 8:24 am

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