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We have 3 HDDs, same capacity (2TB). Witch RAID level allows me to use 4TB of space and in case any of the 3 HDDs fails (but only one) i have all the 4TB untouched and safe?

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marked as duplicate by EEAA, MDMarra, Zoredache, TheCleaner, Sven Oct 8 '13 at 20:02

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up vote 4 down vote accepted

The answer is RAID 5, but it's really not difficult for you to have looked this up yourself, is it?

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