Lenovo System x3550 M4 - Reliability, Availability, and Serviceability

externaldevices.UEFI-compliantSystemxserversarecapableofbootingUEFI-compliantoperating
systems,BIOS-basedoperatingsystems,andBIOS-basedadaptersaswellasUEFI-compliantadapters.
Note:TheserverdoesnotsupportDOS(DiskOperatingSystem).
•VMwareESXiembeddedhypervisor
AnoptionalUSBflashdevicewithVMwareESXiembeddedhypervisorsoftwareisavailableforpurchase.
Hypervisorisvirtualizationsoftwarethatenablesmultipleoperatingsystemstorunonahostsystem
atthesametime.TheUSBembeddedhypervisorflashdevicecanbeinstalledintheinternalUSB
connectoronthesystemboard.Formoreinformationaboutusingtheembeddedhypervisor,see“Using
theembeddedhypervisor”onpage107
.
Reliability,availability,andserviceability
Threeimportantcomputerdesignfeaturesarereliability,availability,andserviceability(RAS).TheRAS
featureshelptoensuretheintegrityofthedatathatisstoredintheserver,theavailabilityoftheserverwhen
youneedit,andtheeasewithwhichyoucandiagnoseandcorrectproblems.
YourserverhasthefollowingRASfeatures:
•3-yearpartsand3-yearlaborlimitedwarranty(MachineType7914)
•24-hoursupportcenter
•Automaticerrorretryandrecovery
•Automaticrestartonnonmaskableinterrupt(NMI)
•Automaticrestartafterapowerfailure
•Backupbasicinput/outputsystemswitchingunderthecontroloftheintegratedmanagementmodule
(IMM)
•Built-inmonitoringforfan,power,temperature,voltage,andpower-supplyredundancy
•Cable-presencedetectiononmostconnectors
•Chipkillmemoryprotection
•Double-devicedatacorrection(DDDC)forx4DRAMtechnologyDIMMs(availableon16GBDIMMsonly).
Ensuresthatdataisavailableonasinglex4DRAMDIMMafterahardfailureofuptotwoDRAMDIMMs.
Onex4DRAMDIMMineachrankisreservedasaspacedevice.
•DiagnosticsupportforServeRAIDandEthernetadapters
•Errorcodesandmessages
•Errorcorrectingcode(ECC)L3cacheandsystemmemory
•FullArrayMemoryMirroring(FAMM)redundancy
•Hot-swapcoolingfanswithspeed-sensingcapability
•Hot-swapharddiskdrives
•InformationandlightpathdiagnosticsLEDpanels
•IntegratedManagementModule(IMM)
•LightpathdiagnosticsLEDsformemoryDIMMs,microprocessors,harddiskdrives,solidstatedrives,
powersupplies,andfans
•Memorymirroringandmemorysparingsupport
•Memoryerrorcorrectingcodeandparitytest
•Memorydownsizing(non-mirroredmemory).Afterarestartoftheserverafterthememorycontroller
detectedanon-mirroreduncorrectableerrorandthememorycontrollercannotrecoveroperationally,
theIMMlogstheuncorrectableerrorandinformsPOST.POSTlogicallymapsoutthememorywiththe
uncorrectableerror,andtheserverrestartswiththeremaininginstalledmemory.
•Menu-drivensetup,systemconfiguration,andredundantarrayofindependentdisks(RAID)configuration
programs
•Microprocessorbuilt-inself-test(BIST),internalerrorsignalmonitoring,internalthermaltripsignal
monitoring,configurationchecking,andmicroprocessorandvoltageregulatormodulefailureidentification
throughlightpathdiagnostics
•Nonmaskableinterrupt(NMI)button
•Paritycheckingonthesmallcomputersysteminterface(SCSI)busandPCI-EandPCI/PCI-Xbuses
12Systemx3550M4InstallationandServiceGuide