FC-NVMe limitations and SAN configuration guidelines

Consider NVMe over Fibre Channel target limits when you plan and configure the hosts.

Include the following points in your plan:
  1. An NVMe host can connect to four NVMe controllers on each system node. The maximum per node is four with an extra four in failover.

    Zone up to four ports in a single host to detect up to four ports on a node. To allow failover and avoid outages, zone the same or additional host ports to detect an extra four ports on the second node in the I/O group.

  2. A single I/O group can contain up to 256 FC-NVMe I/O controllers. The maximum number of I/O controllers per node is 128 plus an extra 128 in failover. Following the recommendation in step 1, zone a total maximum of 16 hosts to detect a single I/O group. Also, consider that a single system target port allows up to 16 NVMe I/O controllers.