7
SAS/SATAControllerLED
15
DIMM1-6errorLEDs
8
IMMheartbeatLED
Table7.System-boardLEDs
LEDDescription
ErrorLEDs
WhenoneoftheseLEDsislit,itindicatesthattheassociatedcomponenthas
failed.
Baseboardmanagementcontroller
heartbeatLED
ThisLEDashestoindicatethattheIMMisfunctioningnormally.
StandbypowerLED
WhenthisLEDislit,itindicatesthattheserverisconnectedtoacpower.
Serverpowerfeatures
Whentheserverisconnectedtoanacpowersourcebutisnotturnedon,theoperatingsystemdoesnot
run,andallcorelogicexceptfortheserviceprocessor(theintegratedmanagementmodule)isshutdown;
however,theservercanrespondtorequeststotheserviceprocessor,suchasaremoterequesttoturnonthe
server.The
power-onLEDashestoindicatethattheserverisconnectedtoacpowerbutisnotturnedon.
Turningontheserver
Approximately5secondsaftertheserverisconnectedtoacpower,oneormorefansmightstartrunning
toprovidecoolingwhiletheserverisconnectedtopowerandthepower-onbuttonLEDashesquickly.
Approximately1to3minutesaftertheserverisconnectedtoacpower,thepower-controlbuttonbecomes
active(thepower-onLEDashesslowly),andoneormorefansmightstartrunningtoprovidecoolingwhile
theserverisconnectedtopower.Youcanturnontheserverbypressingthepower-controlbutton.
Theservercanalsobeturnedoninanyofthefollowingways:
•Ifapowerfailureoccurswhiletheserveristurnedon,theserverwillrestartautomaticallywhenpower
isrestored.
•Ifyouroperatingsystemsupportsthe®WakeonLANfeature,the®WakeonLANfeaturecanturnon
theserver.
Note:When4GBormoreofmemory(physicalorlogical)isinstalled,somememoryisreservedforvarious
systemresourcesandisunavailabletotheoperatingsystem.Theamountofmemorythatisreservedfor
systemresourcesdependsontheoperatingsystem,thecongurationoftheserver,andthecongured
PCIdevices.
Turningofftheserver
Whenyouturnofftheserverandleaveitconnectedtoacpower,theservercanrespondtorequeststo
theserviceprocessor,suchasaremoterequesttoturnontheserver.Whiletheserverremainsconnected
toacpower,oneormorefansmightcontinuetorun.Toremoveallpowerfromtheserver,youmust
disconnectitfromthepowersource.
Someoperatingsystemsrequireanorderly
shutdownbeforeyouturnofftheserver.Seeyour
operating-systemdocumentationforinformationaboutshuttingdowntheoperatingsystem.
Statement5
Chapter5.LocatingServerControlsandconnectors113
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