Replacing a Fan Module (for a Smart Disk Enclosure)

Impact on the System

During the replacement of a fan module, when the expansion module of the disk enclosure where the fan module resides is removed, the system switches services from the port to the peer cascading port. The back-end port has no redundant links, and disks in the loop all run with a single path, degrading the system reliability. Therefore, you are advised to replace an expansion module in off-peak hours.

Prerequisites

• The spare part is on hand.
• The fan module that you want to replace has been located.

You can locate a component in either of the following ways:

• Locating a component based on alarms in DeviceManager: On the Alarms and Events page of DeviceManager, view the help information and determine the ID of the component to be replaced. Then locate the component at your site based on its ID.
• Locating a component based on the status of its Running/Alarm indicator: For details about the indicators on different components, see "Indicator Introduction" of each component in the Product Description specific to your product model and version.

Precautions

• Do not touch rotating fan blades.
• Remove and insert a fan module and the expansion module of the disk enclosure where the fan module resides with even force. Excessive force may damage the appearance of the fan module or cause faults.
• The interval between the removal and insertion of an expansion module must be within 10 minutes.
• After all indicators on the rear panel of an expansion module are off, the air baffle can be removed. A fan module must be replaced within three minutes.

Tools and Materials

• ESD table
• ESD wrist strap
• ESD bag
• Labels

Procedure

1. Check status before replacement.
   1. Check system status.

      Start SmartKit and choose Home > Storage > Routine Maintenance > Health Check. On the Health Check page, perform inspection as instructed. For details, see Checking System Status.

      If any items fail the inspection, rectify the faults by performing the recommended actions in the inspection reports. Ensure that all other parts except the parts to be replaced are working properly.

   2. Check the status of the parts to be replaced.

      Start SmartKit and choose Home > Storage > Parts Replacement > Parts Replacement. On the Parts Replacement page, click FRU Replacement. Then complete the check before the replacement as prompted. For details, see Replacing an FRU.

      You can proceed to next steps only when all items pass the pre-replacement check and the replacement page is displayed. If any item fails, rectify the fault as prompted.

2. Wear an ESD wrist strap.
3. Remove the cable from the expansion module to which the fan module to be replaced belongs.
4. Open the latches on the ejector levers on both sides of the expansion module, and hold the ejector levers to pull out the expansion module, as shown in Figure 8-108.
   Figure 8-108 Opening the latches to pull out the expansion module
   

5. Place the removed expansion module on the ESD table.
6. Lift the air baffle according to the signs on the air baffle, as shown in Figure 8-109.

   You can remove the air baffle only after all indicators on the rear panel of the expansion module are off.

   Figure 8-109 Removing the air baffle
   

7. Locate the fan module you want to replace based on its ID and indicator, as shown in Figure 8-110.
   • If the indicator is steady yellow, the fan module is faulty.
   • If the indicator is steady green, the fan module is working properly.
   Figure 8-110 ID and indicator on the fan module
   

8. Hold the latch on the fan module, lift the handle on the front and rear of the fan module, and pull out the fan module, as shown in Figure 8-111.
   Figure 8-111 Removing the fan module
   

   You must vertically remove the fan module upward. Otherwise, connectors of the fan module will be damaged.

9. Put the removed fan module into an ESD bag.
10. Take the spare part out of its ESD bag.
11. Insert the fan module to be installed into the empty slot, as shown in Figure 8-112.
    Figure 8-112 Installing the fan module
    

12. Press connectors of the fan module to ensure that the connectors are fastened, as shown in Figure 8-113.
    Figure 8-113 Fastening connectors of the fan module
    

13. Close the air baffle of the expansion module.
14. Open the ejector levers of the expansion module to be installed, insert the expansion module into the empty slot, and push the expansion module into the slot as much as possible, as shown in Figure 8-114.
    Figure 8-114 Pushing the expansion module to be installed into the empty slot
    

15. Press and hold the ejector levers and push the expansion module inwards until the expansion module is fully inserted into the slot, as shown in Figure 8-115.
    Figure 8-115 Installing the expansion module
    

    Hold the ejector levers on both sides and push the expansion module into the slot with even force to prevent poor contact between the expansion module and the backplane.

16. Connect cables to their corresponding locations.
17. Wait until the expansion module is powered on and check the status of the Power indicator, Alarm indicator, and built-in FRU Alarm indicator on the expansion module to determine whether the fan module has been successfully installed, as shown in Figure 8-116.
    • If the Power indicator is on and the Alarm indicator is off, the expansion module has been installed successfully.
    • If the Power indicator is off or the Alarm indicator is on, the newly installed expansion module is faulty, the expansion module slot is faulty, or the expansion module is not properly installed or is not powered on.
    • If the built-in FRU Alarm indicator is on, the newly installed fan module is faulty, the fan module slot is faulty, or the fan module is not properly installed.
    • If the built-in FRU Alarm indicator is off, the fan module has been installed successfully.
    Figure 8-116 Indicators of the expansion module
    

18. Confirm the replacement.
    1. Perform a post-replacement inspection.

       After the parts replacement, return to the SmartKit page and click Replaced. Then complete the check after the replacement as prompted.

    2. Check system status.

       On the Parts Replacement page, click Inspection to check the system status again. If any item fails inspection, rectify the fault based on the suggestions in the inspection report.

    3. After the preceding procedure is complete, check services on the host for storage-related errors.

Follow-up Procedure

After the fan module is replaced, label it to facilitate subsequent operations.