Lenovo ThinkServer RD440 User Manual Page 99

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AttachtheESDgroundcliptoanyframeground,groundbraid,orgreen-wireground.
Whenworkingonadouble-insulatedorbattery-operatedsystem,useanESDcommongroundor
referencepoint.Youcanusecoaxorconnector-outsideshellsonthesesystems.
Usethegroundprongoftheacplugonac-operatedservers.
Systemreliabilityguidelines
Tohelpensurepropercoolingandsystemreliability,strictlyfollowtheseguidelines:
Eachofthedrivebayshasadriveoradummytrayinstalled;orthereisanelectromagneticinterface(EMI)
protectivepanelorEMIshieldinstalledtoprotectthedrivecage.
Iftheserversupportshot-swapredundantpowersupplies,eachofthepowersupplybayhasaredundant
powersupplyinstalled,oronebayhasaredundantpowersupplyinstalledwhiletheotherbayiscovered
byashield.
Leaveadequatespacearoundtheservertoensurethattheservercoolingsystemworkswell.Leave
approximately50mm(2inches)ofopenspacearoundthefrontandrearoftheserver.Donotplace
objectsinfrontofthefans.Forpropercoolingandairflow,installtheservercoverbeforeyouturnon
theserver.Operatingtheserverforextendedperiodsoftime(morethan30minutes)withtheserver
coverremovedmightdamageservercomponents.
Properlyroutethecables.Forsomeoptions,suchasPCIcards,followthecablinginstructionsthatcome
withtheoptionsinadditiontotheinstructionsinthismanual.
Whenreplacingahot-swapdrive,installthenewhot-swapdrivewithintwominutesofremoval.
Ifyourserverhasairductsorairbaffles,donotremovethemwhiletheserverisrunning.Operatingthe
serverwithouttheairductsorairbafflesmightcausethemicroprocessorstooverheat.
Forserversthatsupportuptotwomicroprocessors,ensurethatthesecondmicroprocessorsocket
alwayscontainsamicroprocessororisprotectedbyamicroprocessorsocketcover.
Workinginsidetheserverwiththepoweron
Attention:Staticelectricitythatisreleasedtointernalservercomponentswhentheserveristurnedonmightcause
theservertohalt,whichmightresultinthelossofdata.Toavoidthispotentialproblem,alwaysuseanESDwriststrap
orothergroundingsystemwhenyouworkinsidetheserverwiththepoweron.
Theserversupportshot-swapdevicesandisdesignedtooperatesafelywhileitisturnedonandthecoveris
removed.Followtheseguidelineswhenyouworkinsidetheserverwiththepoweron:
Avoidwearingloose-fittingclothingonyourforearms.Buttonlong-sleevedshirtsbeforeworkinginside
theserver;donotwearcufflinkswhileyouareworkinginsidetheserver.
Donotallowyournecktieorscarftohanginsidetheserver.
Removejewelry,suchasbracelets,necklaces,rings,andloose-fittingwristwatches.
Removeitemsfromyourshirtpocket,suchaspensandpencils.Theseitemsmightfallintotheserveras
youleanoverit.
Avoiddroppinganymetallicobjectsintotheserver,suchaspaperclips,hairpins,andscrews.
Removingtheservercover
Attention:Donotopenyourserverorattemptanyrepairbeforereadingandunderstanding“Safetyinformation”
onpageiii
and“Guidelines”onpage85.
Thistopicprovidesinstructionsonhowtoremovetheservercover.
Chapter6.Installing,removing,orreplacinghardware87
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