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OceanStor 9000 V5 7.0 Parts Replacement 05

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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Replacing a DIMM

Replacing a DIMM

A storage node supports up to 24 DDR4 RDIMMs.

Impact on the System

Before replacing a DIMM, you must power off the storage node. This will adversely affect the services running on the node. Exercise caution when performing this operation.

Prerequisites

  • The replacement DIMM is ready.
  • The faulty DIMM has been located.

Precaution

  • Only professional technical support engineers are allowed to replace a DIMM.
  • A storage node has two power modules. Ensure that both are disconnected.
  • The DIMM has only one installation direction. If a DIMM cannot be properly seated in a slot, do not exert excess force on the module to avoid damaging the DIMM or slot.
  • The new memory modules must be the same as the other memory modules. If new memory modules are different from the old memory modules, it is recommended to change all old memory modules in the node.
  • Before replacing a DIMM, record the system memory capacity for check and comparison after the replacement.

Do not install DIMM in 001 (E) to ensure that data on the NVDIMM can be normally accessed.

The following lists rules to install a DIMM:

  • A storage node provides 24 double data rate 4 (DDR4) DIMM slots. Each processor supports six memory channels and each memory channel supports two DDR4 DIMMs, as shown in Figure 5-135. NVDIMM is located at 000 (A) in Figure 5-135.
    Figure 5-135  Memory riser
  • Table 5-2 lists the memory channels.
    Table 5-2  Memory channel components

    CPU

    Channel

    CPU1

    000 (A), 010 (B), 020 (C), 030 (D), 040 (E), 050 (F)

    CPU2

    100 (A), 110 (B), 120 (C), 130 (D), 140 (E), 150 (F)

  • You must comply with the memory configuration rules listed in Table 5-3.

    Table 5-3  Memory configuration rules for storage node with two CPUs

    DIMMs

    Slot to Install DIMMs

    2

    040 (E),140 (E)

    3

    040 (E),140 (E),050 (F)

    4

    040 (E),140 (E),050 (F),150 (F)

    5

    030 (D),040 (E),140 (E),050 (F),150 (F)

    6

    030 (D),130 (D),040 (E),140 (E),050 (F),150 (F)

    7

    010 (B),110 (B),020 (C),040 (E),140 (E),050 (F),150 (F)

    8

    010 (B),110 (B),020 (C),120 (C),040 (E),140 (E),050 (F),150 (F)

    9

    010 (B),110 (B),020 (C),120 (C),030 (D),040 (E),140 (E),050 (F),150 (F)

    10

    010 (B),110 (B),020 (C),120 (C),030 (D),130 (D),040 (E),140 (E),050 (F),150 (F)

    11

    010 (B),110 (B),020 (C),120 (C),030 (D),130 (D),040 (E),140 (E),050 (F),150 (F),011 (H)

    12

    010 (B),110 (B),020 (C),120 (C),030 (D),130 (D),040 (E),140 (E),050 (F),150 (F),011 (H),111 (H)

    13

    010 (B),110 (B),020 (C),120 (C),030 (D),130 (D),040 (E),140 (E),050 (F),150 (F),011 (H),111 (H),021 (I)

    14

    010 (B),110 (B),020 (C),120 (C),030 (D),130 (D),040 (E),140 (E),050 (F),150 (F),011 (H),111 (H),021 (I),121 (I)

    15

    010 (B),110 (B),020 (C),120 (C),030 (D),130 (D),040 (E),140 (E),050 (F),150 (F),011 (H),111 (H),021 (I),121 (I),041 (K)

    16

    010 (B),110 (B),020 (C),120 (C),040 (E),140 (E),050 (F),150 (F),011 (H),111 (H),021 (I),121 (I),041 (K),141 (K),051 (L),151 (L)

    17

    010 (B),110 (B),020 (C),120 (C),030 (D),040 (E),140 (E),050 (F),150 (F),011 (H),111 (H),021 (I),121 (I),041 (K),141 (K),051 (L),151 (L)

    18

    010 (B),110 (B),020 (C),120 (C),030 (D),130 (D),040 (E),140 (E),050 (F),150 (F),011 (H),111 (H),021 (I),121 (I),041 (K),141 (K),051 (L),151 (L)

    19

    010 (B),110 (B),020 (C),120 (C),030 (D),130 (D),040 (E),140 (E),050 (F),150 (F),011 (H),111 (H),021 (I),121 (I),031 (J),041 (K),141 (K),051 (L),151 (L)

    20

    010 (B),110 (B),020 (C),120 (C),030 (D),130 (D),040 (E),140 (E),050 (F),150 (F),011 (H),111 (H),021 (I),121 (I),031 (J),131 (J),041 (K),141 (K),051 (L),151 (L)

    21

    100 (A),010 (B),110 (B),020 (C),120 (C),030 (D),130 (D),040 (E),140 (E),050 (F),150 (F),011 (H),111 (H),021 (I),121 (I),031 (J),131 (J),041 (K),141 (K),051 (L),151 (L)

    22

    100 (A),010 (B),110 (B),020 (C),120 (C),030 (D),130 (D),040 (E),140 (E),050 (F),150 (F),101 (G),011 (H),111 (H),021 (I),121 (I),031 (J),131 (J),041 (K),141 (K),051 (L),151 (L)

    Table 5-4  Memory configuration rules for storage node with a single CPU

    DIMMs

    Slot to Install DIMMs

    1

    010 (B)

    2

    010 (B),040 (E)

    3

    010 (B),020 (C),040 (E)

    4

    010 (B),020 (C),040 (E),050 (F)

    5

    010 (B),020 (C),040 (E),050 (F),011 (H)

    6

    010 (B),020 (C),040 (E),050 (F),011 (H),041 (K)

    7

    010 (B),020 (C),040 (E),050 (F),011 (H),021 (I),041 (K)

    8

    010 (B),020 (C),040 (E),050 (F),011 (H),021 (I),041 (K),051 (L)

    9

    010 (B),020 (C),030 (D),040 (E),050 (F),011 (H),021 (I),041 (K),051 (L)

    10

    010 (B),020 (C),030 (D),040 (E),050 (F),011 (H),021 (I),031 (J),041 (K),051 (L)

Tools and Materials

  • Flat-head screwdrivers
  • Electrostatic discharge gloves
  • ESD wrist straps
  • ESD bags
  • Labels

Procedure

  1. Wear an ESD wrist strap or ESD gloves.
  2. Use the KVM to log in to the operating system of the node, enter user name root and its password (default: Root@storage), and run poweroff command to power off the node.

    Wait until the KVM has no output. The power-off is complete.

  3. Remove all power cables and external signal cables.
  4. Remove the storage node from the enclosure.
    1. Loosen the captive screws on the storage node panel using a screwdriver, as shown in step 1 in Figure 5-136.

      Figure 5-136  Pulling out a storage node

    2. Pull out the storage node along the guide rails away from the cabinet, as shown in step 2 in Figure 5-136.
    3. Push the release button upward, and remove the storage node with the inner rails. See Figure 5-137. Note that four people are required to lift the storage node.

      Figure 5-137  Removing the storage node from the holding rails

  5. Remove the enclosure cover.
    1. Use a flat-head screwdriver to loosen the latch that secures the ejector lever of the enclosure cover, as shown in step 1 in Figure 5-138.
    2. Open the ejector lever to push the enclosure cover backwards, as shown in step 2 in Figure 5-138.

      Figure 5-138  Removing an enclosure cover

  6. Lift the air duct according to the signs on the air duct, as shown in Figure 5-139.

    Figure 5-139  Removing the air duct

  7. Remove the DIMM.
    1. At the same time, open the fixing clips of the DIMM slot, as shown in step 1 in Figure 5-140.

      Figure 5-140  Removing a DIMM

    2. Remove the DIMM from the slot, as shown in step 2 in Figure 5-140.
  8. Place the removed DIMM in a memory riser box.
  9. Take the spare DIMM out of the memory riser box.
  10. Open the two fixing clips on the DIMM slot simultaneously, as shown inFigure 5-141.

    Figure 5-141  Opening the fixing clips on a DIMM slot

  11. Align the DIMM with the DIMM slot, and insert the DIMM into the slot, as shown in Figure 5-142.

    The two fixing clips close automatically.

    Figure 5-142  Installing a DIMM

  12. Align the positioning pins on the air duct with the fixing holes on the mainboard by following the instructions on the enclosure, and vertically place the air duct downwards, as shown in Figure 5-143.

    Figure 5-143  Installing an air duct

  13. Install the enclosure cover.
    1. Place the enclosure cover horizontally, align it with the fixing slots on both side panels of the enclosure, and close the ejector lever, as shown in steps 1 and 2 in Figure 5-144.

      Figure 5-144  Installing an enclosure cover

    2. Use a flat-head screwdriver to tighten the latch in order to secure the ejector lever of the enclosure cover, as shown in step 3 in Figure 5-144.
  14. Put the storage node into the cabinet.
    1. Lift the storage node, align the inner rails with the holding rails, and push the storage node into the rack. See Figure 5-145. Note that four people are required to lift the storage node.

      Figure 5-145  Installing the storage node

    2. Press the release buttons on both sides, and push the storage node into the cabinet until the storage node cannot move forward, as shown in Figure 5-146.

      Figure 5-146  Pushing the storage node into the cabinet

    3. Tighten the captive screws on the mounting ears to secure the storage node, as shown in Figure 5-147.

      Figure 5-147  Securing a storage node

  15. Connect the storage node to the power sockets and peripheral devices according to the cable connection labels. Then power on the storage node.
  16. Log in to the storage node using the KVM.
  17. Clear NVDIMM data.
    1. When the screen shown in Figure 5-148 is displayed during the system startup, press Delete.

      Figure 5-148  BIOS startup page

      NOTE:
      If a dialog box that informs you of entering the password is displayed, enter the BIOS password (default: Admin@9000).

    2. Choose Security > Clear NvDimm Flash and press Enter, as shown in Figure 5-149.

      Figure 5-149  Choosing Clear NvDimm Flash

    3. In the Clear NvDimm Flash dialog box, select Yes and press Enter, as shown in Figure 5-150.

      Figure 5-150  Starting to clear NVDIMM data

    4. If the Clear NvDimm flash success! message is displayed, data in the NVDIMM is cleared, as shown in Figure 5-151.

      Figure 5-151  NVDIMM data cleared

    5. Press Enter and then F10. In the dialog box that is displayed, select Yes and press Enter to save the configuration and restart the storage node, as shown in Figure 5-152.

      Figure 5-152  Saving the configuration and restarting the storage node

  18. During the system startup, the basic input/output system (BIOS) interface is displayed. Check the system memory capacity.
    1. If information similar to the following is displayed, press Delete repeatedly. The BIOS interface is displayed, as shown in Figure 5-153.

      Figure 5-153  BIOS startup page
      NOTE:

      If a dialog box that informs you of entering the password is displayed, enter the BIOS password (default: Admin@9000).

    2. On the BIOS interface that is displayed, check the system memory capacity, as shown in Figure 5-154.

      Figure 5-154  Checking memory capacity
      NOTE:
      • If the system memory capacity equals the actual memory capacity, the installation is successful. Then restart the device.
      • If the system memory capacity is less than the actual memory capacity, the installation fails. Remove and reinsert the DIMM.

  19. Inspect the system using SmartKit. Choose Home > Storage > Routine Maintenance > More > Inspection to check the system status. For details, see the OceanStor 9000 V5 Routine Maintenance.

    • If all inspection items are successful: The inspection is successful.
    • If some inspection items fail the inspection: The inspection is failed. Rectify the faults by taking recommended actions in the inspection reports. You need to reperform inspection after rectifying. If the inspection is still failed, contact Huawei technical support.

Follow-up Procedure

After replacing the DIMM, label the replaced DIMM to facilitate subsequent operations.

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Updated: 2019-07-25

Document ID: EDOC1100067965

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