Removing and replacing a fan module

Use this procedure to replace a faulty fan module in a Storwize® V7000 2076-724/U7B node canister with a new one received from stock.

About this task

Each node canister contains five fan modules, which are accessible when the node canister is removed from the control enclosure. Each fan module contains two fans and a cable that connects the module to the system board.

Attention:

• Do not remove the node canister and faulty fan module before the replacement fan is available. After a fan module is removed, this replacement procedure must be completed within 16 minutes to ensure that the components do not shut down due to excessive temperatures.
• When you replace this part, you must follow recommended procedures for handling electrostatic discharge (ESD)-sensitive devices.
• No tools are required to complete this task. Do not remove or loosen any screws.

1. Follow Procedure: Powering off a node canister to verify that the hosts will not lose access to data in volumes.
2. Remove the node canister, as described in Reseating a node canister in the control enclosure.
3. Remove the cover, as described in Removing and replacing the cover of a node canister.

Removing the fan module

4. Remove the replacement fan module from its packaging. Figure 1 shows an example of a fan module.

   

5. Identify the faulty fan module.

   The Event Log indicates the fan and node that are causing the error. The fix procedure in the management GUI provides the location of the node canister. As Figure 2 shows, the fan modules are numbered 1 to 5 within the node canister. Fan modules 4 and 5 are near the node canister battery.

   

6. Carefully disconnect the fan cable from the system board of the node canister, as shown in Figure 3.

   

7. Hold the fan module between your finger and thumb at the blue touch points. Squeeze gently and lift the fan module out of the node canister, as Figure 4 shows.

   

Replacing the fan module

8. Install the replacement fan module into the vacant fan slot. The cable must face toward the canister front. Be careful to ensure the connecting cable passes over the air dam at the V-shaped indent, as shown in Figure 5. Ensure that the cable is not caught under the fan module.

   

   1. Check the orientation of the connector and plug the cable end into the numbered fan connector on the system board.
   2. If you are installing fan module 5, carefully pass the cable through the gap in the metal divider of the battery compartment to reach the connector on the main board.

      

9. Replace the canister cover, as described in Removing and replacing the cover of a node canister.
10. Reinsert the node canister, as described in Reseating a node canister in the control enclosure.
11. Reconnect the power and data cables into the ports from which they were removed.
12. If the control enclosure is powered and the node canister is correctly installed, the node canister starts automatically.
    1. If the node canister is not correctly installed, remove it and repeat the installation procedure.
13. When the node canister is back online, check the Event Log for any new events that might indicate a problem with the reassembly.