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Install and maintain

Replace the NVMEM battery - FAS2820

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To replace an NVMEM battery in the system, you must remove the controller module from the system, open it, replace the battery, and close and replace the controller module.

All other components in the system must be functioning properly; if not, you must contact NetApp Support.

Step 1: Shut down the impaired controller

To shut down the impaired controller, you must determine the status of the controller and, if necessary, take over the controller so that the healthy controller continues to serve data from the impaired controller storage.

If you have a cluster with more than two nodes, it must be in quorum. If the cluster is not in quorum or a healthy controller shows false for eligibility and health, you must correct the issue before shutting down the impaired controller; see Synchronize a node with the cluster.

Steps

  1. If AutoSupport is enabled, suppress automatic case creation by invoking an AutoSupport message: system node autosupport invoke -node * -type all -message MAINT=_number_of_hours_down_h

    The following AutoSupport message suppresses automatic case creation for two hours: cluster1:*> system node autosupport invoke -node * -type all -message MAINT=2h

  2. If the impaired controller is part of an HA pair, disable automatic giveback from the console of the healthy controller: storage failover modify -node local -auto-giveback false

  3. Take the impaired controller to the LOADER prompt:

    If the impaired controller is displaying…​ Then…​

    The LOADER prompt

    Go to Remove controller module.

    Waiting for giveback…​

    Press Ctrl-C, and then respond y.

    System prompt or password prompt (enter system password)

    Take over or halt the impaired controller from the healthy controller: storage failover takeover -ofnode impaired_node_name

    When the impaired controller shows Waiting for giveback…​, press Ctrl-C, and then respond y.

Step 2: Remove and open the controller module

Remove and open the controller module.

Steps

  1. If you are not already grounded, properly ground yourself.

  2. Loosen the hook and loop strap binding the cables to the cable management device, and then unplug the system cables and SFPs (if needed) from the controller module, keeping track of where the cables were connected.

    Leave the cables in the cable management device so that when you reinstall the cable management device, the cables are organized.

  3. Remove and set aside the cable management devices from the left and right sides of the controller module.

  4. Squeeze the latch on the cam handle until it releases, open the cam handle fully to release the controller module from the midplane, and then, using two hands, pull the controller module half-way out of the chassis.

    drw 2850 pcm remove install IEOPS 694

  5. Check the NVMEM LED located on the back of the controller module. Look for the NV icon:

    drw hw nvram icon
    Note The green NV LED on the faceplate will start flashing when power is removed from the controller if the system was in the "waiting for giveback" state, or the system was not taken over or halted properly (uncommitted data). If the impaired controller module was not successfully taken over by the partner controller module, contact NetApp Support

    • If the green NV status LED begins flashing when the controller module is removed from the chassis:

      • Confirm that the controller had a clean takeover by the partner controller module or the impaired controller shows waiting for giveback, the flashing LED can be ignored and you can complete removing the impaired controller from the chassis.

    • If the green NV LED if off, you can complete removing the impaired controller from the chassis.

Step 3: Replace the NVMEM battery

Remove the failed NVMEM battery from the system and replace it with a new NVMEM battery.

Steps

  1. If you are not already grounded, properly ground yourself.

  2. Remove the controlle module from the chassis.

  3. Turn the controller module over and place it on a flat, stable surface.

  4. Open the cover by pressing the blue buttons on the sides of the controller module to release the cover, and then rotate the cover up and off of the controller module.

    drw 2850 open controller module cover IEOPS 695

  5. Locate the NVMEM battery in the controller module.

    Animation - Replace the NV battery
    drw 2850 replace nvbattery IEOPS 715
    Callout number 1

    Battery release tab
    icon round 2

    Battery power connector

  6. Remove the failed battery from the controller module:

    1. Press the blue button on the side of the controller module.

    2. Slide the battery up until it clears the holding brackets, and then lift the battery out of the controller module.

    3. Unplug the battery from the controller module

  7. Remove the replacement battery from its package. Install the replacement battery:

    1. Plug the battery plug back into the socket on the controller module.

      Make sure that the plug locks down into the battery socket on the motherboard.

    2. Aligning the battery with the holding brackets on the sheet metal side wall.

    3. Slide the battery pack down until the battery latch engages and clicks into the opening on the side wall.

  8. Reinstall the controller module cover and lock it into place.

Step 4: Reinstall the controller module

After you replace components in the controller module, reinstall it into the chassis.

Steps

  1. If you are not already grounded, properly ground yourself.

  2. If you have not already done so, replace the cover on the controller module.

  3. Turn the controller module over and align the end with the opening in the chassis.

  4. Align the end of the controller module with the opening in the chassis, and then gently push the controller module halfway into the system.

    Note Do not completely insert the controller module in the chassis until instructed to do so.

  5. Recable the system, as needed.

    If you removed the media converters (QSFPs or SFPs), remember to reinstall them if you are using fiber optic cables.

  6. Complete the reinstallation of the controller module:

    1. With the cam handle in the open position, firmly push the controller module in until it meets the midplane and is fully seated, and then close the cam handle to the locked position.

      Note Do not use excessive force when sliding the controller module into the chassis to avoid damaging the connectors.

      The controller begins to boot as soon as it is seated in the chassis.

    2. If you have not already done so, reinstall the cable management device.

    3. Bind the cables to the cable management device with the hook and loop strap.

  7. Reboot the controller module.

    Note During the boot process, you might see the following prompts:

    • A prompt warning of a system ID mismatch and asking to override the system ID.

    • A prompt warning that when entering Maintenance mode in an HA configuration you must ensure that the healthy controller remains down. You can safely respond y to these prompts.

Step 5: Restore automatic giveback and AutSupport

Restore automatic giveback and AutoSupport if they have been disabled.

  1. Restore automatic giveback by using the storage failover modify -node local -auto-giveback true command.

  2. If an AutoSupport maintenance window was triggered, end it by using the system node autosupport invoke -node * -type all -message MAINT=END command.

Step 6: Return the failed part to NetApp

Return the failed part to NetApp, as described in the RMA instructions shipped with the kit. See the Part Return and Replacements page for further information.