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@Howard Marks (@DeepStorageNet) - Actually, because of the high level of parallelism, that cluster need only be 8-10 nodes to realistically talk about rebuilding a 2TB SSD in under two minutes. Remember that, during a rebuild, the entire protection domain participates in the rebuild operation, requiring only a fraction of that '160Gbps' to come from each node to execute the rebuild. Also remember that any participating node has a certain quantity of the rebuild data, so each node is only sending a small portion of the data requiring re-protection. If you have not seen this in action, you should ask for a demo from your DEMC account team, because it's staggering to watch a small number of nodes and SSDs rebuild at astounding rates.
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May 4, 2017