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Cable an NS224 shelf to your AFF A700 system

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Cable your NS224 shelf to your AFF A700 system so that each shelf has two connections to each controller in the HA pair.

How you cable an NS224 shelf to an AFF A700 HA pair depends on the number of shelves you are hot-adding and the number of RoCE-capable port sets (one or two) you are using on the controllers.

Before you begin

If you are hot-adding the initial NS224 shelf (no NS224 shelf exists in your HA pair), you must install a core dump module (X9170A, NVMe 1TB SSD) in each controller to support core dumps (store core files).

+ See Replace the caching module or add/replace a core dump module — AFF A700 and FAS9000.

About this task

How you cable an NS224 shelf to an AFF A700 HA pair depends on the number of shelves you are hot-adding and the number of RoCE-capable port sets (one or two) you are using on the controllers.

Steps

  1. If you are hot-adding one shelf using one set of RoCE-capable ports (one RoCE capable I/O module) on each controller, and this is the only NS224 shelf in your HA pair, complete the following substeps.

    Otherwise, go to the next step.

    Note This step assumes that you installed the RoCE-capable I/O module in slot 3, instead of slot 7, on each controller.

    1. Cable shelf NSM A port e0a to controller A slot 3 port a.

    2. Cable shelf NSM A port e0b to controller B slot 3 port b.

    3. Cable shelf NSM B port e0a to controller B slot 3 port a.

    4. Cable shelf NSM B port e0b to controller A slot 3 port b.

      The following illustration shows cabling for one hot-added shelf using one RoCE-capable I/O module in each controller:

      Cabling for an AFF A700 with one NS224 shelf and one set of IO module ports

  2. If you are hot-adding one or two shelves using two sets of RoCE-capable ports (two RoCE-capable I/O modules) in each controller, complete the applicable substeps.

    Shelves Cabling

    Shelf 1
    Note These substeps assume that you are beginning the cabling by cabling shelf port e0a to the RoCE-capable I/O module in slot 3, instead of slot 7.

    1. Cable NSM A port e0a to controller A slot 3 port a.

    2. Cable NSM A port e0b to controller B slot 7 port b.

    3. Cable NSM B port e0a to controller B slot 3 port a.

    4. Cable NSM B port e0b to controller A slot 7 port b.

    5. If you are hot-adding a second shelf, complete the “Shelf 2” substeps; otherwise, go to the next step.

    Shelf 2
    Note These substeps assume that you are beginning the cabling by cabling shelf port e0a to the RoCE-capable I/O module in slot 7, instead of slot 3 (which correlates with the cabling substeps for shelf 1).

    1. Cable NSM A port e0a to controller A slot 7 port a.

    2. Cable NSM A port e0b to controller B slot 3 port b.

    3. Cable NSM B port e0a to controller B slot 7 port a.

    4. Cable NSM B port e0b to controller A slot 3 port b.

    5. Go to the next step.

    The following illustration shows cabling for the first and second hot-added shelves:

    Cabling for an AFF A700 with two NS224 shelves and two sets of IO module ports

  3. Verify that the hot-added shelf is cabled correctly using Active IQ Config Advisor.

    If any cabling errors are generated, follow the corrective actions provided.

What's next

If you disabled automatic drive assignment as part of the preparation for this procedure, you need to manually assign drive ownership and then reenable automatic drive assignment, if needed. Go to Complete the hot-add.

Otherwise, you are done with the hot-add shelf procedure.