Power Supplies

Use the Elements window to view information about your system's installed power supplies. Use the Alert Management tab to configure Alert Actions for Power Supply and Power Redundancy Alert Management.

System Tree Selection  Tab Subtab User Privileges
    View Manage
Main System Chassis
Power Supplies Properties Elements  U, P, A NA

U=User; P=Power User; A=Administrator; NA=Not Applicable. For more details on user privilege levels, see "Privilege Levels in the Server Administrator GUI."

Power Supply

The power supply is an electrical system that converts AC current from the wall outlet into the DC currents required by the system components. 

Systems can be designed with redundant power supplies to prevent system shutdown due to power supply failure. When extra power supplies are present in a system, being able to see that one or two power supplies have failed enables administrators to replace power supplies and restore redundancy before the last power supply failure causes the entire system to fail. 

Power Supply Redundancy

Redundancy Status Redundancy Status can be Full or Lost. Currently, all systems have n+1 power supplies, where n is the number of power supplies that are required for the system to work under fully loaded and stress conditions. If the number of power supplies in a system that is required for full redundancy is three:

Redundancy status is Full when three power supplies are working.

Redundancy Status is Lost with a status of noncritical when two power supplies are working.

Redundancy Status is Lost with a status of critical when only one power supply is working.

Full redundancy is defined by system specification. Lost redundancy means that there are no backup power supplies available to take over for the minimum number required, but at least one power supply is working. 

Number of devices  required for full redundancy Your system has a number of power supplies defined for full redundancy. Currently, all systems have n+1 power supplies, where n is the number of power supplies that are required for the system to work under fully loaded and stress conditions. If the number of power supplies required for Full redundancy is three, redundancy is lost when one or two power supplies are working.

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Individual Power Supply Elements

Status Power supply status is indicated by the status icon for components. A green check mark ( ) indicates that a component is healthy (OK). A yellow triangle containing an exclamation point ( ) indicates that a component has a warning (noncritical) condition and requires prompt attention. A red X ( ) indicates that a component has a critical/failure condition and requires immediate attention. A blank space (     ) indicates that a component's health status is unknown.
Location Place in the system where the power supply is installed.
Type Whether the power that is supplied to the system is AC or DC.
Max Wattage Maximum wattage that the power supply can deliver.
Online Status Whether the power supply is currently delivering power to the system (online) or whether the power supply is not supplying power (offline).

Example online status values for a power supply in normal condition are:

AC Power on, AC Power Switch on, PS OK, PS On, PS Fan OK

Example online status values for a power supply in critical condition are:

AC Power off, AC Power Switch on, PS Failure, PS Off, PS Fan Failure

Power Supply and Power Redundancy Alert Management

Use this window to configure the alerts that you want to take effect in case of a power supply warning, critical/failure, or loss of redundancy event.

System Tree Selection Tab Subtab User Privileges
  View Manage
Main System Chassis
Power Supplies Alert Management Alert Actions U, P, A P, A

U=User; P=Power User; A=Administrator; NA=Not Applicable. For more details on user privilege levels, see "Privilege Levels in the Server Administrator GUI."

Status Definitions for Power Supplies and Power Redundancy Units
Event Description
Power Supply Critical Power supply is operating outside of wattage limits. Take power supply offline.
Power System Redundancy Degraded The number of operational supplies has fallen below the number required for Full redundancy.
Power System Redundancy Lost The number of operational power supplies has fallen below the number required for partial redundancy (redundancy Degraded). Only the minimum number of power supplies required by the system is operational. In the event that the nonredundant power supplies fail, there will be no power delivered to the system.
Alert Actions for Power Supplies

To configure alert actions for power supplies, see "Power Supply Alert Management."

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