Hot-swapping an LRC, ESH, ESH2, or AT-FCX module

Verify that your storage system meets the minimum software requirements to support the disk shelf modules that you are hot-swapping. See the DiskShelf14, DiskShelf14mk2 FC, or DiskShelf14mk2 AT Hardware Guide for more information.

Determine which loop contains the module you are removing, and determine whether any disks in the cluster are single-pathed through that loop.

For more information, see How to determine path status for your cluster.

If you performed a cluster takeover previously, complete the following steps:

1. Return control of Node A's disk shelves by entering the following command at Node B's console:
   
   cf giveback
2. Wait for the giveback to complete before proceeding to the next step.

If any disks use this loop for their only path to a controller, complete the following steps:

1. Follow the cables from the module you want to replace back to one of the cluster nodes. We will call this node Node A.
2. At the Node B console, enter the following command:

   cf takeover
   

3. Wait for takeover to be complete and make sure that the partner node, or Node A, reboots and is waiting for giveback.

Result

The modules in the loop that are attached to Node A can now be replaced.

Put on the antistatic wrist strap and grounding leash.

Disconnect the module that you are removing from the Fibre Channel cabling.

Using the thumb and index finger of both hands, press the levers on the CAM mechanism on the module to release it and pull it out of the disk shelf.

Slide the replacement module into the slot at the rear of the disk shelf and push the levers of the CAM mechanism into place.

Attention
Do not use excessive force when sliding the module into the disk shelf; you might damage the connector.

Wait 30 seconds after inserting the module before proceeding to the next step.

Reconnect the Fibre Channel cabling.

Check the operation of the new modules by entering the following command from the console of both nodes:

environ shelf

Test the replacement module, as described in Testing the modules.

Test the configuration, as described in Stage 6: Checking and testing cluster configuration.