1. Oracle Server X9-2L Service Manual
  2. Servicing the Disk Backplane (FRU)

13 Servicing the Disk Backplane (FRU)

The following section describes how to service the disk backplane. The disk backplane is a field-replaceable unit (FRU). For more information about FRUs, see Illustrated Parts Breakdown and Field-Replaceable Units.

Caution:

The disk backplane must be removed and replaced only by authorized Oracle Service personnel.

Caution:

Ensure that all power is removed from the server before removing or installing the disk backplane. You must disconnect the power cables before performing this procedure.

Caution:

These procedures require that you handle components that are sensitive to electrostatic discharge. This sensitivity can cause the component to fail. To avoid damage, ensure that you follow electrostatic discharge safety measures and antistatic practices. See Electrostatic Discharge Safety.

To remove and install the disk backplane, follow these procedures:

Servicing Storage Drives (CRU)
Servicing SAS Cables (FRU)
Servicing NVMe Cables (FRU)

Remove the Disk Backplane

  1. Prepare the server for service.
    1. Power off the server and disconnect the power cords from the power supplies.
    2. Extend the server into the maintenance position.
    3. Attach an antistatic wrist strap to your wrist, and then to a metal area on the chassis.
    4. Remove the server top cover.
    5. Remove the air baffle.
    6. Remove the fan modules from the server.
    7. Remove the fan tray from the server.
  2. Pull each storage drive out far enough to disengage it from the backplane.

    See Remove a Storage Drive.

    Note:

    It is not necessary to completely remove the storage drives from the server; simply pull them out far enough to disengage them from the backplane. If you do remove the storage drives from the server, make a note of their locations so that you can reinstall them in the same locations.
  3. Disconnect the cables from the disk backplane.
    1. Disconnect the power cable from the disk backplane [1].
    2. Depending on your storage drive configuration, do one of the following:

      • Disconnect the three SAS cables (not shown) from the disk backplane [1].

        Press and hold the green button on the connector to disengage the locking mechanism, then gently pull the connector from the disk backplane. Note the cable connections in order to ease proper reconnection of the cables.

      • Disconnect the twelve NVMe cables from the disk backplane [1].

        Note:

        Up to twelve NVMe cables are used when storage drive slots 8 through 11 contain NVMe SSDs.

        Press and hold the green button on the connector to disengage the locking mechanism, then gently pull the connector from the disk backplane. Note the cable connections in order to ease proper reconnection of the cables.


      Figure showing the disk backplane being removed from the server.
    3. Disconnect the temperature sensor cable from the disk backplane [2].
    4. Disconnect the auxiliary signal cable from the disk backplane [2].
  4. Using a Torx T15 screwdriver, loosen the right-side and left-side spring-mounted screws that secure the disk backplane to the chassis [3].
  5. Using a Torx T25 screwdriver, loosen the spring-mounted screws that secure the backplane bracket to the chassis, and lift the bracket from the server [4].
  6. Lift the disk backplane up to release it from the standoff hooks and out of the chassis [5 and 6].
  7. Place the disk backplane on an antistatic mat.

Install the Disk Backplane

  1. Lower the disk backplane into the server, and position it to engage the standoff hooks [1 and 2].

    Figure showing the disk backplane being installed in the server.
  2. Lower the backplane bracket into the server, and using a Torx T25 screwdriver, tighten the spring-mounted screws to secure the bracket to the chassis [3].
  3. Using a Torx T15 screwdriver, tighten the right-side and left-side spring-mounted screws to secure the disk backplane to the chassis [4].
  4. Reconnect the cables to the disk backplane.
    1. Reconnect the auxiliary signal cable to the disk backplane [5].
    2. Reconnect the temperature signal cable to the disk backplane [5].
    3. Depending on your storage drive configuration, do one of the following:

      • Reconnect the three SAS cables (not shown) to the disk backplane [6].

        To ensure proper SAS cable connections, see the SAS cabling reference table in Step 3 in Install SAS Storage Drive Cables.

      • Reconnect the twelve NVMe cables to the disk backplane [6].

        Note:

        Up to twelve NVMe cables are used when storage drive slots 8 through 11 contain NVMe SSDs.

        To ensure proper NVMe cable connections, see the NVMe cabling reference table in Step 3 in Install NVMe Cables, and perform the procedures in Verify NVMe Cable Connections.

    4. Reconnect the power cable to the disk backplane [6].
  5. Return the server to operation.
    1. Install the fan tray.
    2. Install the fan modules.
    3. Install the air baffle.
    4. Install the server top cover.
    5. Install all storage drives into the storage drive cage.
    6. Return the server to the normal rack position.
    7. Reconnect the power cords to the power supplies, and power on the server.
    8. Verify that the power supply AC OK LED is lit.

    Note:

    IMPORTANT: When the disk backplane is replaced, the key identity properties (KIP) of the backplane is programmed by Oracle ILOM to contain the same KIP as the other quorum member components. If you removed other quorum member components, you might need to manually program the product serial number (PSN) into the new backplane. For more information, see FRU Key Identity Properties (KIP) Automated Update.