Datasheet

A-70
Catalyst 6500 Series Switches Installation Guide
OL-5781-05
Appendix A Power Supply Specifications
Power Supply Redundancy
Note When running redundant 4000 W power supplies in Catalyst 6506 and Catalyst 6509 non-E series
systems, if you remove the power supply in bay 1, the total system power will be reduced to 2940 W
after 300 seconds (5 minutes). You can avoid this reduction in the total system power by leaving the
4000 W power supply in bay 1, even in a powered down state.
If the total system power usage is greater than 2940 W, the following scenario will apply if the 4000 W
power supply is removed from bay 1 (these scenarios are specific to the 4000 W power supply running
in redundant mode in either the Catalyst 6506 or Catalyst 6509 non-E series systems.
• If the 4000 W power supplies in bay 1 and bay 2 are running in redundant mode, the total system
power will be 4000 W.
• If power supply 1 is running and you power off or remove power supply 2, the total system power
will be 4000 W. The system will issue a normal power supply 2 down/remove indication warning.
• If you power down power supply 1 while power supply 2 is operating, the system will issue a normal
power supply 1 down indication warning with another warning asking the user not to remove power
supply 1. If power supply 1 is left in the system, even if it is powered off, the total system power
will be 4000 W.
• If you remove power supply 1 from the system, a major alarm will be issued to warn that the total
system power will be reduced to 2940 W and that any modules or PoE devices that cause the system
to exceed 2940 W will power down in 300 seconds (5 minutes). If you insert a replacement power
supply 1 in the 300-second timeframe, no action will be taken.