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How much storage is utilized with RAID-5?

If I had a RAID-5 set up with five 100 GB drives, how much hard drive storage space would actually be utilized as data storage and how much would be used by parity information?

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The overhead of RAID-5 is fixed at one drive. With an array of five 100 GB drives, you lose 100 GB.

This was first published in March 2003

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