Replace a DIMM

Dual in-line memory modules (DIMMs) provide random access memory (RAM) for the central processing units (CPUs) in the Pilot. A failed DIMM would cause the Pilot to fail and must be replaced as soon as possible.

Each Pilot has two standard DIMMs with an 8 GB memory. DIMMs are connected to the DIMM slots located on both sides of the central processing unit (CPUs) and heatsinks on the Pilot motherboard. DIMMs are customer replaceable units (CRUs) but are not hot-swappable. Replacing a DIMM requires you to power down the Pilot. The following figure shows the location of the DIMMs on the Pilot motherboard and DIMM LEDs.

Figure 1 Location of the DIMMs on the Pilot motherboard

Legend

1 DIMMs

2 Motherboard

3 DIMM LED

Note: The DIMMs can be accessed only after removing the cover over the Pilot chassis.

Note: To replace a DIMM, you do not need to remove the Pilot from the rack but extend it along the Pilot rails using the cable management arm (CMA).

Identify the Pilot component for replacement

1. Locate the failed component by checking the status of the component LEDs.
   You can also use Oracle FS System Manager (GUI) to view the status. From the GUI, navigate to System > Hardware and then select the chassis type of interest.
2. From the GUI, prepare the system for component replacement.

Power off the Pilot

3. Notify affected users that the Pilot will be powered off.
4. Ensure that the host of the Pilot on which the replacement procedure must be performed is powered off.

Slide the Pilot into service position

5. Slide the Pilot chassis fully forward until the slide rails lock into position.
   Figure 2 Pilot position during component replacement  

   Legend

   1 Rack

   2 Pilot chassis

   3 Pilot rails

6. When Guided Maintenance prompts you to remove the component, pull the flip handles at front of the Pilot and start sliding the Pilot out of the rack.
   Caution

   Deploy any rack anti-tilt mechanism before releasing the release buttons and extending the Pilot.

   Figure 3 Pilot slide lockout release tabs  

   Legend

   1 Slide rail lock

   2 Slide lockout release tab

   Note: The slide-rail locks are located behind the flip-down handles on the front of the Pilot chassis. The slide-rail locks are released when the flip-down handles are pulled down. The slide lockout release tab must be released to push the Pilot chassis back into the rack.

Open Pilot fan door

7. Press the two fan door release tabs simultaneously forward and swing the Pilot fan door to the open position.
   Note: Servicing the Pilot fan modules and other components located in the front of the Pilot, such as the front indication module (FIM) and the disk backplanes, require that the fan door be opened. It is also easier to remove the Pilot’s top cover if you open the fan door first.

   Figure 4 Pilot with fan door open  

   Legend

   1 Fan door release tabs

   2 Pilot fan door in open position

Open Pilot top cover

8. Press down on the push button on the Pilot top cover to release the top cover and use the recessed areas to slide the top cover toward the back of the Pilot about 0.5 inches (12.7 mm).
   Caution

   Before removing the top cover of the Pilot, power off the Pilot using Guided Maintenance. Removing the Pilot top cover before powering off the Pilot might cause damage to the software image on the Pilot.

   Tip: Slide out the Pilot top cover by pressing down on the grooves located on both sides of the cover.

   Figure 5 Pilot top cover removal  

   Legend

   1 Push button to release top cover

   2 Grooves to slide out top cover

9. Lift the cover off the Pilot chassis and set it aside.

Remove the failed Pilot DIMM

10. Remove the DIMM by pressing down on the tabs on both sides of the DIMM to unlock it from the slot.
    Figure 6 Pilot DIMM removal
    
    
    
    

    Legend

    1 DIMM

    2 DIMM slot

    3 DIMM tab

    Note: While inserting or removing DIMMs, ensure that there is no interference with the cables. Pulling or pressing down on the cables might cause damage to the cables during the replacement procedure.
11. Lift out the faulted DIMM and set aside on an antistatic mat.
    Note: Visually inspect the DIMM slots, and the DIMM, for physical damage by checking for cracked or broken plastic in the slot.

    Note: Sometimes DIMMs might fault because of dust or improper alignment or damaged slots. Use only compressed air to dust DIMMs.

Insert the failed Pilot DIMM

12. Unpack the component from its shipping carton.
    Note: Place the component on an antistatic mat if it must be set aside for any reason.
13. Press the DIMM fully into the DIMM slot and ensure that the tabs on both sides of the DIMM are locked.
    Important! Ensure that the notch in the DIMM lines up with the key in the slot. Press down on the DIMM equally across the board, placing your thumbs on opposite ends of the DIMM module to insert it into the slot.

    Note: Replace only one DIMM at a time to make sure that they are inserted into the correct slots. Attempting to insert multiple DIMMs into the slots might damage the DIMMs due to excessive flexure.

    Note: Never leave a DIMM slot unpopulated. Insert filler panels into empty DIMM slots to ensure proper air flow inside the Pilot.

Close Pilot top cover

14. Place the top cover of the Pilot onto the chassis.
    Tip: Place the top cover down so that it hangs over the back of the Pilot by about 13 mm (0.5 inches) [1] and the side latches align with the slots in the sides of the Pilot chassis.

    Note: There are three latching tabs on the sides of the Pilot top cover, two on the right side and one on the left side when viewing the Pilot from the front. There is also a latch on the underside of the top cover in the front left corner near the release button.
15. Check both sides of the Pilot chassis to ensure that the four corners of the top cover are fully down and flush with the chassis.
    Note: If the cover corners are not flush with the Pilot chassis, slide the cover towards the back of the chassis until you can position the cover correctly.

    Note: If the top cover is not correctly positioned before attempting to slide the cover forward, the internal latch that is on the underside of the cover might be damaged.
16. Gently slide the top cover along the grooves of the Pilot by pressing down on either side of the top cover until it locks into place and you hear an audible click.
    Figure 7 Pilot top cover installed  

    Legend

    1 Top cover

    2 Grooves to slide the top cover

    3 Fan door

Close Pilot fan door

17. Close the Pilot fan door by pressing the two release tabs on both sides of the fan door until it locks into place.

Slide the Pilot into rack position

18. Simultaneously pull and hold the two release tabs, one on each side of the Pilot, toward the front of the Pilot while you push the Pilot into the rack.
    Figure 8 Location of the Pilot release tabs  

    Note: As you push the Pilot into the rack, verify that the cable management arm (CMA) retracts without binding.

    Note: To pull the Pilot release tab, place your finger in the center of the tab, not on the end, and apply pressure as you pull the tab toward the front of the Pilot.
19. Continue pushing the Pilot into the rack until the slide-rail locks on the front of the Pilot engage the slide-rail assemblies.
    Note: The Pilot locks into the rack position with an audible click.

Power on the Pilot

20. Reconnect the power cords to the Pilot.
    Note: After the power cords are connected, the green SP LED and the OK LED both start to blink.

    Note: Do not turn on the power to the Pilot host immediately. The power on the Pilot host is turned on only after updating the Pilot BIOS. Turning on the power to the Pilot host early can prevent the Pilot from booting after the Pilot BIOS is updated.

Verify the Pilot component status

21. From Guided Maintenance, verify that the status is Normal.
    You can also verify the status by navigating to System > Hardware and then selecting a chassis. The Overview page for the selected chassis lists the status of each component.

    Note: The Controller status will be visible several minutes after being powered on.
22. Review the status of the LEDs to confirm a status of Normal.