Avaya Virtual Services Platform 9010 Manual page 10

AC power supply fundamentals
• redundant, parallel operation with active load sharing
• internal front-to-back cooling with variable-speed fan control
Redundant power configuration
If a chassis has a redundant power supply configuration and one power supply fails, the chassis
continues to operate with no interruption of service. The chassis continues to supply the same
output power with the remaining power supplies.
If a chassis has the minimum power supply configuration (nonredundant configuration) and one
power supply fails, the system loses power and network connectivity. A trap and syslog message
indicates that the configuration is nonredundant.
With a minimum configuration and a power supply failure, the software powers down lower priority
interface modules until it establishes the positive power margin. For more information about how to
configure the slot priority, see Administering Avaya Virtual Services Platform 9000, NN46250-600.
Important:
Avaya recommends that you operate the Virtual Services Platform 9000 system in a redundant
configuration at all times to ensure a maximum network up time.
The following figure shows a redundant power supply configuration using six 9006AC power
supplies in a Virtual Services Platform 9012 chassis.
Figure 1: Redundant power supplies in the VSP 9012 chassis
Installing AC Power Supplies in Avaya VSP 9000
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December 2014