A Storage Pool is a logical entity that aggregates the capacity of physical devices.
Define the Protection Domain (Option A): The Storage Pool hierarchy is strict. You must first create a Protection Domain (PD), which groups the SDS nodes. The Storage Pool is then created within that Protection Domain. You cannot create a Storage Pool without this parent container.
Assign drives with similar performance characteristics (Option B): This is a critical configuration requirement. PowerFlex stripes data across all drives in a pool. If you mix NVMe and SATA drives in the same pool, the fast NVMe drives will wait for the slow SATA drives, dragging the entire pool's performance down to the lowest common denominator (the "straggler" effect). Therefore, standard procedure is to create separate pools for separate media types (e.g., "Performance_Pool" for NVMe, "Capacity_Pool" for HDD).
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