Installing and Removing an S-AC-PS Power Supply
Enterasys S-Series S8 Chassis Hardware Installation Guide 3-15
BeawarethatwhenyoureceiveyourS8chassis,acoverplatewillbeinplaceoverallpower
supplyslotsexceptPS1.
Power Supply Planning
Althougheachpowersupplyrequiresitsowncircuit,whenplanningtheS8chassispowerbudget
youhavetheoptionofdrawingfromoneormoresourcesbyeithertheN+1or1+1method,
respectively.
TheN+1methodprotectstheS8chassisagainstthefailureof
asinglepowersupplyalthoughnot
againstanoutagebythatsource.Inaschemewherethreemodulesareinstalled,youcanassignall
threemodulestoonesource.Thisisthemostcommonapproachtopowersupplyplanning.
Alternately,the1+1methodhastheadvantageofprotectingthe
S8chassisagainstanoutageby
oneofthepowersourcesaswellasthefailureofoneorasmanyashalfofyourpowersupplies.
However,thismethodrequireseitherabackupbatteryoranotherpowersourceseparatefromthe
firstpowersource.
Thenumberofpowersuppliesrequired
inanS8chassisisdeterminedbythenumberandtypesof
modulesinstalledinthechassis.
Unpacking the S-AC-PS Power Supplies
TheS‐AC‐PSpowersupplymodulesareshippedinboxesseparatefromtheS‐Serieschassis.To
unpackapowersupply:
1. Unpackthepowersupplybyremovingitfromtheshippingboxandslidingthetwofoamend
capsofftheunit.
Savetheshippingboxandmaterialsinthe
eventtheunitmustbereshipped.
2. VerifythecontentsoftheboxusingTable 3‐2asappropriate.
3. Removethepowersupplyfromitsprotectiveplasticbag.
4. Examinethepowersupplycarefully,checkingfordamage.
Ifanydamageisnoted,DONOTinstallthepowersupply.ContactEnterasysNetworks
immediately.Referto“Getti ng
Help”onpage xviifordetails.
Table 3-2 Contents of S-AC-PS Power Supply Carton
Item Quantity
S-AC-PS power supply 1
Type of power cord is dependent on country of installation.
For USA shipments: NEMA Power Cord 5-20, C19, R/A, SHLD
Each S-AC-PS power supply accepts (X) IEC320 C19 power cord plugs.
1
NOTICE Card 1