Lenovo ThinkServer RD450 - Memory Module Problems

•ThestatusLEDsoneachhot-swapstoragedrivehelpyoueasilyidentifyaproblem.See“Hot-swap-drive
activityandstatusLEDs”onpage46
.
Symptom
Action
Anewlyinstalledhot-swapstoragedriveisnotrecognized.1.Ensurethatthedriveisinstalledintothecorrectdrive
bay.
2.Restarttheserver.
3.Removethedrivefromthebay,wait45seconds,and
reinsertthedriveintothebay,makingsurethatthe
driveconnectstothehot-swap-drivebackplane.
4.Runanydiagnosticprogramstotestthedriveifyou
have.
5.Ensurethatthehot-swap-drivebackplaneiscorrectly
seated.Whenitiscorrectlyseated,thedrive
assembliescorrectlyconnecttothebackplane
withoutbowingorcausingmovementofthe
backplane.
6.Ensurethatthecableconnectioniscorrect.See
“Connectingcables”onpage47
.
7.Reconnectthebackplanepowercableandrepeat
step1throughstep4.
8.Reconnectthebackplanesignalcableandrepeat
step1throughstep4.
9.Ifyoususpectaproblemwiththebackplanesignal
cableorthebackplane:
a.Replacetheaffectedbackplanesignalcable.
b.Replacetheaffectedbackplane.
Multiplestoragedrivesfail.
1.Ensurethatthecableconnectioniscorrect.See
“Connectingcables”onpage47.
2.Reconnectthepowercable(s).
3.Reconnectthesignalcable(s).
4.Replacetheaffectedsignalcable(s).
5.Ifyoususpectaproblemwiththebackplane,replace
theaffectedbackplane.
Memorymoduleproblems
Followthesuggestedactionsforthecorrespondingsymptomintheorderinwhichtheyarelisteduntilthe
problemissolved.Ifnoneoftheseactionssolvetheproblem,see“Troubleshootingprocedure”onpage183
forthesubsequentstepsyoushouldcheckafterusingtheinformationinthistopic.Iftheproblemstillcannot
besolved,seektechnicalassistance.SeeChapter8“Gettinginformation,help,andservice”onpage189
.
Notes:
•Ifyouareinstructedtoremove,install,orreplaceanyCRUs,refertotherelatedprocedureinChapter
6“Replacinghardware”onpage63
.
•Ifanactionstepisprecededby“(Trainedservicetechnicianonly),”thisactionstepisreservedforatrained
servicetechnicianandmustbeperformedonlybyatrainedservicetechnician.
186ThinkServerRD450UserGuideandHardwareMaintenanceManual