Installation guide

Power Supply Installation Considerations
2-6 Installation
Bydefault,theG3switchautomaticallyallotspowertothebaseboardandtoeachinstalled
module.Eachcomponent’spowerconsumptionissubtractedfromtheavailablepowerandthe
remainingpowerisequallydistributedamonginstalledPoEmodules.APoEmodulemustbe
allottedaminimumof37wattstobe
operational.
Table 2‐1illustratestheG3powerdistribution.Ifonepowersupplyfailsorisremoved(hot
swapped)foranyreason,theother powersupplytakesuptheload.Powerredundancyremainsin
effectaslongastheloaddoesnotexceedthepowerasstatedintheRedundancycolumn.
Power
supplyLEDsvisibleonthefrontpaneloftheswitchindicatewhetherthepowersupplies
arepresentand,iftwoarepresent,whethertheyareinredundantoradditive(non‐redundant)
mode.FormoreinformationaboutthepowersupplyLEDs,see“PowerLEDDisplays”on
page 2‐14.
RefertoAppendix A
forpowerspecificationsofvariousG3components.Forinformationonusing
theCLItosetthestatusofpowerredundancyandtoreviewsystempowersettings,refertothe
EnterasysG‐SeriesCLIReference.
Supported Power Configurations
ThefollowingpowerconfigurationsaresupportedontheG3:
•Non‐redundant(additive)
– 400Watts(1x400)
– 800Watts(2X400)
– 1200Watts(1x1200)
– 1600Watts(1200+400)
– 2400Watts(1200X2)
•Redundant
– 400Watt(2X400)
– 400Watt(400+1200)
– 1200Watt(2X1200)
Table 2-1 Power Distribution According to Number of Installed Power Supplies
Power
Supplies
Redundancy
Hot
Swappable
Power Sharing
1 No No Maximum power 1200
2 Yes, if power demand is less than
the capacity of one power supply.
1
1. If power requirements exceed this capacity, power redundancy is no longer supported. Removing a power
supply under this condition will cause the remaining power supplies to go into over-current protection and shut
down the power system.
Yes The total load is shared by both power
supplies.