Cabling a hot-add shelf for an AFF A400 HA pair

How you cable an NS224 drive shelf in an AFF A400 HA pair, depends on the number of shelves you are hot-adding and the number of RoCE capable port sets you are using on the controllers.

Before you begin

Steps

  1. If you are hot-adding one shelf using one set of RoCE capable ports on each controller, and this is the only NS224 shelf in your HA pair, complete the following substeps.
    Otherwise, go to the next step.
    1. Cable shelf NSM A port e0a to controller A port e0c.
    2. Cable shelf NSM A port e0b to controller B port e0d.
    3. Cable shelf NSM B port e0a to controller B port e0c.
    4. Cable shelf NSM B port e0b to controller A port e0d.
    Example
    The following illustration shows cabling for one hot-added shelf using one set of RoCE capable ports on each controller:

  2. If you are hot-adding one or two shelves using two sets of RoCE capable ports on each controller, complete the following substeps.
    Shelves Cabling
    Shelf 1
    1. Cable NSM A port e0a to controller A port e0c.
    2. Cable NSM A port e0b to controller B slot 5 port 2 (e5b).
    3. Cable NSM B port e0a to controller B port e0c.
    4. Cable NSM B port e0b to controller A slot 5 port 2 (e5b).
    5. If you are hot-adding a second shelf, complete the "Shelf 2" substeps; otherwise, go to step 3.
    Shelf 2
    1. Cable NSM A port e0a to controller A slot 5 port 1 (e5a).
    2. Cable NSM A port e0b to controller B port e0d.
    3. Cable NSM B port e0a to controller B slot 5 port 1 (e5a).
    4. Cable NSM B port e0b to controller A port e0d.
    5. Go to step 3.
    Example
    The following illustration shows cabling for two hot-added shelves:

  3. Verify that the hot-added shelf is cabled correctly.
    If any cabling errors are generated, follow the corrective actions provided.

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  4. If you disabled automatic drive assignment as part of the preparation for this procedure, you need to manually assign drive ownership and then re enable automatic drive assignment, if needed.
    Otherwise, you are done with this procedure.

    Completing the hot-add