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Considerations for SAN configurations in a MetroCluster environment

You must be aware of certain considerations when using SAN configurations in a MetroCluster environment.

  • Four-node and eight-node MetroCluster configurations do not support front-end FC fabric routed vSAN configurations.

  • Four-node and eight-node MetroCluster configurations support SAN protocols.

  • The NVMe protocol is not supported on MetroCluster configurations.

  • The MetroCluster is using the same WWPNs on both sides of the front-end SAN.
    To avoid overlap when the old port goes offline and the new port comes online, use the following steps to configure the front-end switches:
    For a..Use these steps:
    Cisco switch

    Step 1. Connect to the switch and log in.

    Step 2. Enter configuration mode:

    switch# config t
    switch(config)#

    Step 3. Overwrite the first device entry in the name server database with the new device:
    switch(config)# no fcns reject-duplicate-pwwn vsan 1
    Brocade switchStep 1. Connect to the switch and log in.

    Step 2. Enter the switchDisable command.

    Step 3. Enter the configure command, and press y at the prompt.

       F-Port login parameters (yes, y, no, n): [no] y

    Step 4. Choose setting 1:

       - 0: First login take precedence over the second login (default)
       - 1: Second login overrides first login.  
       - 2: the port type determines the behavior
       
       Enforce FLOGI/FDISC login: (0..2) [0] 1

    Step 5. Respond to the remaining prompts, or press Ctrl + D.

    Step 6. Enter the switchEnable command.