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Why Reported Capacity and Configured Capacity are difference?

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e-series-systems
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Applies to

E-series

Answer

It is caused by D-stripe size. Configured Capacity must be integral multiple of D-stripe size.

The D-Stripe size depends on the platform. For all arrays except EF600 and EF300, a D-stripe contains 4GiB of user data and 1GiB of RAID 6 parity. For EF600 and EF300, a D-stripe contains 8GiB of user data and 2GiB of RAID 6 parity.

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