1. Owner's Guide
  2. Security and Maintenance of Recovery Appliance
  3. Maintaining the Recovery Appliance Hardware
  4. Replacing a Power Distribution Unit
  5. Replacing a PDU

Replacing a PDU

To replace a PDU:

  1. Restart the PDU monitor to identify the network settings:

    1. Press the reset button for 20 seconds, until it starts to count down from 5 to 0. While it is counting, release the button, and then press it once.

    2. Record the network settings, firmware version, and so on, displayed on the LCD screen as the monitor restarts.

    If the PDU monitor is not working, then retrieve the network settings by connecting to the PDU over the network, or from the network administrator.

  2. Turn off all PDU breakers.

  3. Unplug the PDU power plugs from the AC outlets.

    If the rack is on a raised floor, then move the power cords out through the floor cutout. You might need to maneuver the rack over the cutout first.

    WARNING:

    If the power cords use overhead routing, then put them in a location where they will not fall or hit anyone.

  4. For replacing PDU-B when there is no side panel access, and the rack does not have an InfiniBand cable harness:

    Note:

    Do not unstrap any cables attached to the cable arms.

    1. Unscrew the T25 screws holding the square cable arms to the rack.

    2. Move the InfiniBand cables to the middle, out of the way.

  5. Unplug all power cables that connect the servers and switches to the PDU. Keep the power cables together in group bundles.

  6. Remove the T30 screws from the top and bottom of the L-bracket, and note where the screws are used.

  7. Note where the PDU sits in the rack frame.

    The PDU is typically an inch back from the rack frame, to allow access to the breaker switches.

  8. Angle and maneuver the PDU out of the rack.

  9. Hold the PDU or put it down, if there is enough room, while maneuvering the AC power cords through the rack. You might need to cut the cable ties that hold the AC cord flush with the bottom side of the PDU.

  10. Pull the cords as near to the bottom or top of the rack as possible. There is more room between the servers to guide the outlet plug through the routing hole.

  11. Remove the smaller Torx T25 screws, and loosen the nut on the top and bottom to remove the PDU from the L-bracket. You do not need to remove the nut.

  12. Attach the L-bracket to the new PDU.

  13. Put the new PDU next to the rack.

  14. Route the AC cords through the rack to the outlets.

    Note:

    Do not cable-tie the AC cord to the new PDU.

  15. Place the new PDU in the rack by angling and maneuvering it until the L-brackets rest on the top and bottom rails.

  16. Line up the holes and slots so that the PDU is about an inch back from the rack frame.

  17. Attach the power cords, using the labels on the cords as a guide. For example, G5-0 indicates PDU group 5 outlet 0 on the PDU.

  18. Attach the InfiniBand cable holders, if you removed them in step 4. Oracle recommends that you first screw in the holders by hand to avoid stripping the screws.

  19. Attach the AC power cords to the outlets.

  20. Turn on the breakers.

  21. Cable and program the PDU monitor for the network, as needed.

    See Also:

    Oracle Sun Rack II Power Distribution Units User's Guide for information about programming the PDU monitor at

    http://docs.oracle.com/cd/E19844-01/html/E23956/index.html