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RAID 6 capacity loss

Posted on 2014-01-12
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Last Modified: 2016-12-08
Hi All,

I am trying to work out how much capacity is lost on a RAID 6 deployment within a backup solution I am looking at deploying (Datto).

7x 2TB disk at RAID 6 - how much useable space do I actually have?

thanks
Gareth
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Question by:gareth629
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CompProbSolv earned 250 total points
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With RAID 6 you will lose the capacity of two of the drives.  In your case of 7 2T drives, you will have 10T total capacity (7-2)*2T.

Of course, these are nominal sizes and don't account for any overhead.
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by:helpfinder
helpfinder earned 250 total points
ID: 39775265
attaching simple calculators if you will need in the future work with RAID
http://www.synology.com/en-global/support/RAID_calculator
http://www.raid-calculator.com/default.aspx
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by:gareth629
ID: 39775270
awesome guys, thanks.
g
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