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Upgrading the Dell PowerEdge R940 system from dual processor to quad processor configuration

Upgrading from dual processor to quad processor configuration

For more information on upgrading the dual processor to quad processor configuration, watch the video at www.Dell.com/QRL/PER940/2S-to-4S-Upgrade
Figure 1. QRL for 2S to 4S processor configuration upgradeQRL for 2S to 4S configuration upgrade
  • CAUTION: Many repairs may only be done by a certified service technician. You should only perform troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow the safety instructions that are shipped with your product.
  • CAUTION: The Processor Expansion Module (PEM) processors and DIMMs must be installed after the PEM is installed into the chassis. Failure to do so may result in the PEM getting damaged.
  • Turn off the system and disconnect any attached peripherals.
  • Always wear ESD protection when working inside the system.
  • Torx #T30 tool required.
  • Flat head or Phillips #2 screwdriver.
  • NOTE: All DIMM sockets are required to have either DIMMs or DIMM blank installed.
  • NOTE: It is recommended to order a heat sink along with every new processor ordered.
  1. Using a flat head or Phillips #2 screwdriver, rotate the latch release lock counter clockwise to the unlocked position on the system cover.
  2. Lift the latch until the system cover slides back and the tabs on the system cover disengage from the guide slots on the system.
    Figure 2. Removing system coverThis image shows removing system cover
  3. Hold the system cover on both sides, and lift the cover away from the system.
  4. Hold the air shroud at both ends and lift the air shroud out of the system.
    • NOTE: The air shroud for the dual processor system can be discarded.
    • NOTE: If you have a dual processor 3UPI system, remove the two 3UPI cables from the system board and discard. If you have a dual processor 1UPI system, then there will be no UPI cables to remove.
    • NOTE: If the NVMe drives are installed, then you will have to remove and discard the dual processor NVMe cables and replace them with new NVMe cables. After installing the PEM, the NVMe extender cards must be removed from the system board PCIe slots and installed in the expansion card riser PCIe slots.
  5. Connect the five cables associated with UPI (four 4UPI cables and one clock cable), provided in the kit to the connectors on the system board. For more information, refer to the System Information Label (SIL) for cabling.
  6. Hold the Processor Expansion Module (PEM) power board by the edges and insert the PEM power board into the connector on the system board.
    Figure 3. Installing PEM power boardsThis image shows installing PEM power boards
  7. Hold the PEM vertically by using the PEM handle. Align the slots on the sides of the PEM with the standoffs on the sides of the system and lower the PEM into the standoffs.
    Figure 4. Installing PEMThis image shows installing PEM
  8. Connect the five cables associated with UPI (four 4UPI cables and one clock cable) to the connectors on the PEM. Refer to the System Information Label (SIL) for cabling.
  9. Hold the PEM handle and lower the PEM until it firmly seats in place.
  10. Place the heat sinks, processors, and processor brackets for installation on a static-safe work table.
    • NOTE: Heat sinks, processors, processor brackets, and DIMMs are not part of the kit. They have to be ordered separately.
  11. Flex the outer edges of the bracket around the processor ensuring that the processor is locked into the clips on the bracket.
    • NOTE: Ensure that the pin 1 indicator on the bracket is aligned with the pin 1 indicator on the processor before placing the bracket on the processor.
    Figure 5. Installing processor bracketThis image shows installing processor bracket
  12. Place the heat sink on the processor and push down until the processor bracket locks onto the heat sink.
    Figure 6. Installing heat sink onto processorThis image shows installing heat sink onto processor
  13. Remove the processor socket dust covers on the PEM.
  14. Align the pins on the heat sink to the guides on the PEM and then place the processor and heat sink module (PHM) on the processor socket.
    Figure 7. Installing processor and heat sink moduleThis image shows installing processor and heat sink module
  15. Push the blue retention clips inward to allow the PHM to drop into place.
  16. Using Torx #T30 screwdriver, tighten the screws on the PHM in the order below:
    1. Partially tighten the first screw (approximately 3 turns).
    2. Tighten the second screw completely.
    3. Return to the first screw and tighten it completely.
    If the PHM slips off the blue retention clips when the screws are partially tightened, follow these steps to secure the PHM:
    1. Loosen both of the screws completely.
    2. Lower the PHM onto the blue retention clips, follow the procedure described in step 15.
    3. Secure the PHM to the PEM, follow the procedure described in this step above.
  17. Repeat the steps 11 to 16 to install the other PHM.
  18. Install the DIMMs on the DIMM sockets on the PEM.
    • NOTE: All DIMM sockets are required to have either DIMMs or DIMM blank installed.
  19. If applicable, move the NVMe extender cards from the system board to the appropriate expansion card riser slot per the Installation and Service Manual or System Information Label (SIL), and connect the new NVMe cables per requirement. For more information on NVMe cabling, watch the video at www.Dell.com/QRL/PER940/4S-NVMe-cabling.
    Figure 8. 4S NVMe cabling4S NVMe cabling
  20. Remove the expansion card riser blanks from the rear of the system.
    Figure 9. Removing expansion card riser blankThis image shows removing expansion card riser blank
  21. Remove the protective covers on the expansion card riser connectors on the PEM.
  22. To install the expansion card riser, lift the release lever to an upward position.
    Figure 10. Installing expansion card riserThis image shows installing expansion card riser
  23. Align the guide rail on the side of the expansion card riser with the slot on the side of the system and lower the expansion card riser into the system.
  24. Lower the release lever until the connector on the expansion card riser connects with the connector on the processor expansion module.
  25. Repeat the steps 20 to 24 to install the other expansion card riser.
  26. Install the air shroud for the quad processor configuration provided in the kit.
    Figure 11. Installing quad processor air shroudThis image shows installing quad processor air shroud
  27. Align the tabs on the system cover with the guide slots on the system and slide the system cover forward to close the system cover latch.
  28. Using a flat head or Phillips #2 screwdriver, rotate the latch release lever lock to locked position.
    Figure 12. Installing system coverThis image shows installing system cover

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