Power and Cabling

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The power and cabling of your appliance can vary based on the actual model. All the models except for the 7520 consist of a single head unit only. The 7520 has a head unit and an EBOD enclosure. The details of power and cabling for these models is covered in the following sections:

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Power and Cabling for all models except 7520

For the power and cabling of your appliance, perform the following steps:

  1. Ensure that the power switches on each of the power supplies are in the OFF position. 
  2. Connect the power cords to both the PCMs (as identified in red in the diagram below) in the head unit. 
  3. Attach the power cords to the rack power distribution units as shown below. Ensure the two PCMs use separate power sources.
  4. Power up the system by flipping the power switches on both the PCMs to the ON position.

 

Note.png Note: The user should strictly adhere to the power and cabling scheme shown in diagram below to ensure high availability of the system.

 

5020And7020_PowerCabling5_S.png

 

 

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Power and Cabling for 7520

The 7520 model has a head unit as well as an EBOD enclosure. For the power and cabling of this model, perform the following steps:

  1. Identify the head unit and the EBOD enclosure. The EBOD enclosure has two stickers marked 'EBOD' in its back plane. See the diagram below for guidance.
  2. Ensure that the power switches on all the PCMs are in the OFF position.
  3. For the head unit, connect the power cords to both the PCMs (as identified in red in the diagram below). 
  4. Ensure the two PCMs of the head unit use separate power sources.
  5. Attach the power cords to the rack power distribution units as shown below. 
  6. Repeat steps 2-5 for the EBOD enclosure.
  7. The EBOD enclosure now needs to be connected to the head unit.
    1. Identify Controller 0, Controller 1, EBOD 0  and EBOD 1 in the appliance backplane. See figure below for guidance.
    2. Use the SAS cables to connect EBOD 0 to Controller 0 and EBOD 1 to Controller 1.
    3. Note that SAS port A on Controller 0 should be connected to SAS port A (as identified by a 'CTRL' sticker) on EBOD 0, and SAS port A on Controller 1 to SAS port A (as identified by a 'CTRL' sticker) on EBOD 1.
  8. Power up the EBOD enclosure first by flipping the power switches on both the PCMs to the ON position.
  9. Verify that the EBOD enclosure is powered up by checking the EBOD controller LEDs (green LED on the back of the chassis) have turned ON. 
  10. Finally, power up the head unit by flipping both the PCM switches to the ON position.
  11. Verify that the system is up by checking the appliance controller LEDs have turned ON.
  12. Verify that the connection between EBOD controller and appliance controller is OK by ensuring the SAS LEDs (4 LEDs next to the SAS port) on the EBOD controller are green.

 

Note.png Note: The user should strictly adhere to the power and cabling scheme shown in diagram below to ensure high availability and optimal performance of the system.

 

7520PowerCabling6_S.png

 

 

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