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6.5
4700 Power-Up
Once the 4700 chassis is secure within the rack, electrical cables from the power distribution
source can be fitted in preparation for connection.
Power cords are supplied by Mellanox according to the system configuration, one per power
supply unit.
1. Ensure that all site power and grounding requirements have been met before connecting the
chassis to a power source.
2. Before turning on the power, verify that all boards, power supplies, and fan tray modules
are properly inserted.
3. Connect the power supply cords to the AC connectors located at the rear of the chassis.
All LED indicators on the Fabric Board and Line Board briefly light up and then turn off just
after power is turned on. This is a normal part of the power on initialization sequence.
After initialization is completed, the link LED indicators on the Fabric Board and Line Board
are in a state representing the link status of their corresponding ports.
If there are not enough sPSUs installed, the system won't power up or in some cases, only part
of the system will power up and other parts will remain unpowered.
Determine the minimum number of PSU required and to add at least 1 PSU as redundant (N:1)
or full redundant (N:N), using the method described in Power Data per Module.
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Verify that you have the correct number of power supply modules installed.
Rack-Mounting the 4700 Chassis
Chapter 7
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