How do I compare IBM FlashSystem resellers against Dell and HPE storage resellers?

Start by confirming each reseller can quote on equal terms: the same workload, capacity, and performance requirements sent to IBM FlashSystem, Dell EMC (PowerStore/PowerMax), and HPE (Alletra/Primera) resellers. Ask each about consumption model (capital purchase vs. pay-as-you-go), what replication and encryption licensing is bundled versus separate, and their specific IBM, Dell, or HPE partner certification tier. For IBM FlashSystem specifically, confirm the FlashCore Module generation and part number being quoted, since capacity and generation both affect price and compatibility.