RAID 6 capacity loss

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
Gareth McKeeCEO/OwnerAsked:
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CompProbSolvConnect With a Mentor Commented:
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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helpfinderConnect With a Mentor IT ConsultantCommented:
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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Gareth McKeeCEO/OwnerAuthor Commented:
awesome guys, thanks.
g
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