RAID 5 Capacity
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Thread: RAID 5 Capacity

  1. April 17th, 2001, 08:45 PM #1
    CyberTech
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    Question RAID 5 Capacity

    When dealing with a RAID 5 storage system, how do you calculate the total storage capacity??

    For example, if you have 5x 30GB HDDs one of these should be used for parity, so my guess would be the total capacity is 4x 30GB = 120GB. Is this correct? or am I missing something??

    My boss seems to think there is a formula to calculate the actual capacity.
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  2. April 17th, 2001, 09:18 PM #2
    Shades
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    Yeah that is the std calculation fo raid 5 capacity

    Capacity = n-1 x size

    You are right in that one disk is used for striping/parity. It isn't physically one disk, it's just one disk worth of space, spread across the entire set of disks.
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