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Installing and Removing a Power Supply

3-12 Matrix X4-C Chassis Setup

Power Supply Planning

Althougheachpowersupplyrequiresitsowncircuit,whenplanningtheX4‐Cpowerbudgetyou

havetheoptionofdrawingfromoneormoresourcesbyeithertheN+1or1+1m ethod,

respectively.

DrawingpowerbytheN+1methodprotectstheX4‐Cagainst

thefailureofasinglepowersource

althoughnotagainstanoutagebythatsource.Inaschemewherethreemodulesareinstalled,as

showninFigure 3‐10,youcanassignallthreemodulestosource“A . ” Thisisthemostcommon

approachtopowersupplyplanning.

Figure 3-10 Power Supply Planning: N + 1 Method

Alternately,drawingpower

bythe1+1methodhastheadvantageofprotectingtheX4‐Cagainst

anoutagebyoneofthepowersourcesaswellasthefailureofoneorasmanyashalfofyour

powersupplies.However,thismethodrequireseitherabackupbatteryoranotherpowersource



separatefromthefirstpowersource.AsshowninFigure 3‐11,threepowersuppliesareinstalled

withtwoassignedtosource“A ” andtheothertosource“B.”

Figure 3-11 Power Supply Planning: 1 + 1 Method

Installing a Power Supply

Powersuppliesareinstalledinslotslocatedatthebaseofthechassis,asshowninFigure 3‐12.If

youintendtoinstallonlyasinglepowersupply,itcanbeinstal ledinanyoftheslotslabeledPS1

toPS3inthechassisalthoughthePS1slotisleft

openforyourconvenience.

ToinstallpowersuppliesintheMatrixX4‐Cchassis,refertothefollowingfiguresandproceedas

follows:

1. Unpackthepowersupplybyremovingitfromitsshippingboxandstrippingthepacking

material.(Savetheshippingboxandmaterialsintheeventtheunitmustbe

reshipped.)

2. Removethepowersupplyfromitsprotectivewrapping.

3. Examinethepowersupplycarefully,checkingfordamage.Ifanydamageisnoted,donot

installthepowersupply.ContactEnterasys Networksforinstructions.

4. LocatetheESDwriststrapshippedwiththeMatrixX4‐Cchassis.AttachtheESDwriststrap

toyourwrist

andplugthecablefromtheESDwriststrapintotheESDgroundingreceptacle

atthebottomofthechassisasshowninFigure 3‐9.

5. Removetheventplatecoveringallpowersupplyslotsbylooseningthesidecaptivescrews,as

showninFigure 3‐12.

N

+

1

Source A

3

2

1

3

2

1

1

+

1

Source A

Source B

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