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    How is the storage capacity calculated for DSA E-Series E2800 12-bay (RAID 6)?

    Question

     

    How is the storage capacity calculated for DSA E-Series E2800 12-bay (RAID 6)?

    Answer

     

    According to this E2800 DSA-N2C8XC-12AT unit, NetApp uses disks that have a net capacity of 10,691TB.

     

    1 HDD = 10948.5 GB (NET) = 12 TB (GROSS) = 10,69 TB

    12 HDDs without RAID = 128,30 TB

    12 HDDs in RAID 6 =  128,30 TB - (10,69 TB x 2 HDDs)= 128,30 TB -  21,38 TB = 106.92 TB 

    Total capacity:

    • RAID 6 contains 12 HDDs → is given by the sum of the total capacity of 10 HDDs (max. 2 broken HDDs without losing data) ex 106,92TB
    • RAID 5 contains 12 HDDs → is given by the sum of the total capacity of 11 HDDs (max. 1 broken HDDs without losing data) ex 117,61TB

     

    The VRM is using the TB value in the VRM dashboard and GB value in his logs. But all calculated with the 1TB = 1024GB

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    ‎10-25-2022 02:05 PM
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