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3.8 Power Supply
The chassis features redundant power supplies. The power modules can be changed without
powering down the system, but only up to the redundancy supported. Standard configuration
supports 3 + 3 redundancy. Up to three modules can be offline for service, although that is not
recommended. New units can be ordered directly from Supermicro or authorized distributors.
These power supplies are auto-switching capable. This feature enables them to automatically
sense the input voltage and operate at a 100-120 V or 180-240 V.
Power Supply LEDs
On the rear of the power supply module, an LED displays the status.
LED Color and State
Solid Green
Blinking Green
Solid Amber
Off
Chapter 3: Maintenance and Component Installation
Power Supply Indicator
Power Supply Condition
Indicates that the power supply is on and working
Indicates the system is off
Indicates failure or needs attention
No AC power to module
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Troubleshooting
