The preferred topology for PowerMax is the dedicated dual-SAN with air-gapped switches or fabrics. Cross connects between SAN switches and PowerMax nodes are not used. Fan-in/fan-out is not required for PowerMax. PowerMax supports up to 32 links per node. Other requirements for NVMe/TCP on PowerMax are described in IP network requirements.
Additional links can be added on the same subnets, or on different subnets.