Installation guide

Power Supply Installation Considerations
Enterasys G-Series Hardware Installation Guide 2-5
Figure 2-1 Attaching the Brackets to the Switch (G3G124-24 with G3G-24TX IOM shown)
3. Usingyourmountinghardware,attachthefrontofthebracketstotherack.Tightensecurely.
Power Supply Installation Considerations
G‐Seriesswitchescanhaveuptotwointernalpowersuppliesinstalled.Currently, twosizesof
powersuppliesareoffered.Thefollowingpowersuppliesareavailabletobepurchasedfrom
EnterasysforinstallationontheG‐Seriesswitch:
•G3‐PWR,a400‐wattACpowersupply(requiresa15ampcircuit)
•G3‐PWR‐POE,a1200‐wattACpowersupply(requiresa20ampcircuit)
Thesepowersuppliesperformloadsharingandmaybeusedinanycomb ination.Thefollowing
sectionsdiscusstheavailablepowersupplyconfigurations.
Power Supply Redundancy
Twomodesofpowersupplyoperationaresupported:
• Redundantmode,inwhichthepowermadeavailabletothesystemisequaltothemaximum
outputofthelowestratedsupply.Whentwosuppliesareinstal ledinredundantmode,
systempowerredundancyisguaranteedifonesupplyislost.
• Non‐redundant,
oradditive,mode,inwhichthecombinedoutputofbothsuppliesismade
availabletothesystem.Inthismode,thelossofasinglesupplymayresultinasystemreset.
Theswitchwillsupportafull15.4wattsofpowerto96portsinnon‐redundantpowermode,and

9.4wattsofpowerto96portsinredundantpowermode.Bydefault,theG‐Seriesswitchissetto
operateinredundantmodewhenasecondpowersupplyisadded.
1 Screws 3 Right rack-mount bracket
2 Left rack-mount bracket