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I have 2x 3TB identical drives and i want to make a single 6TB partition from both drives so i don't have to keep copying files between the drives. ( i know if 1 drive fails i'll lose everything but i have backups )

When i try and make a striped partition in windows disk management i add the 2 drives there but it will only let me make the available disk space the maximum of 1 drive.

Is there something i'm doing wrong ?

Many Thanks

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3 Answers 3

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You're really close. If you want the full capacity without redundancy then you need to select the option for a spanned volume, not striped.

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  • Striped will also use the capacity of both disks. You're thinking of mirrored.
    – Alex McKenzie
    Commented Jan 24, 2014 at 19:26
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In the Windows Disk Manager you'll want to use the Extend Volume option and span the volume across the two drives. This will create a logical extent on the drives and should allow you to make a 6TB (minus partitioning) volume. Here is a link to Microsoft's article on the matter:

http://technet.microsoft.com/en-us/library/cc753058.aspx

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If USB drives on Windows 8, look at storage spaces. If USB drives pre-Windows 8 you need 3rd party software - the free versions of which are extremely clunky.

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