Cisco Systems UCS C420 manual Resolving Insufficient 16-Bit I/O Space

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Chapter 3 Maintaining the Server

Installing or Replacing Server Components

Figure 3-26 BIOS Setup Utility Advanced > PCI Configuration Page

•Guidelines for RAID controller booting

When the server is configured in the factory, the RAID controllers are installed in PCIe slot 3 or slot 5 for single RAID controller configuration, or in both slot 3 and slot 5 for dual RAID controller configuration.

If the server is configured to boot primarily from RAID storage, make sure that the option ROMs for slot 3 or slot 5 are enabled in the BIOS, depending upon your RAID controller configuration. If the RAID controller does not appear in the system boot order even with the option ROMs for slot 3 and slot 5 enabled, the RAID controller option ROM might not have sufficient memory space to execute. In that case, disable other option ROMs that are not needed for the system configuration to free up some memory space for the RAID controller option ROM.

•Guidelines for onboard NIC PXE booting

If the system is configured to primarily perform PXE boot from onboard NICs, make sure that the option ROMs for the onboard NICs to be booted from are enabled in the BIOS Setup Utility. Disable other option ROMs that are not needed to create sufficient memory space for the onboard NICs PXE boot.

Resolving Insufficient 16-Bit I/O Space

The system has only 64 KB of legacy 16-bit I/O resources available. This 64 KB of I/O space is divided between four CPUs in the system because the PCIe controller is integrated into the CPUs. This server BIOS has the capability to dynamically detect the 16-bit I/O resource requirement for each CPU and then balance the 16-bit I/O resource allocation between the CPUs accordingly during the PCI bus enumeration phase of the BIOS POST.

		Cisco UCS C420 Server Installation and Service Guide
		Cisco UCS C420 Server Installation and Service Guide
	OL-27640-01			3-47
	OL-27640-01			3-47

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Contents Americas Headquarters Cisco UCS C420 Server Installation and Service GuidePage N T E N T S Special Considerations for Cisco UCS Virtual Interface Cards For More Information C-6 OL-24342-01 Audience OrganizationChapter Title Description Bewaar Deze Instructies ConventionsWarnung Wichtige Sicherheitshinweise Avvertenza Importanti Istruzioni Sulla SicurezzaAviso Instruções Importantes DE Segurança Guarde Estas Instrucciones GEM Disse Anvisninger Xii Xiii Documentation Feedback Related DocumentationOverview of the Cisco UCS C420 Server 2shows the rear panel features of the server Standard 1lists the features of the serverCisco UCS C420 Server Features Statement Installing the ServerUnpacking and Inspecting the Server Server Documentation Power cord up to two KVM cableInstallation Guidelines Preparing for Server InstallationSlide Rail Adjustment Range Rack RequirementsEquipment Requirements This section describes how to install the server in a rack Installing the Server In a RackInserting the Server into the Slide Rails Attaching the Cable Management Arm Initial Server Setup Connecting and Powering On the Server Standalone ModeThis section includes the following topics Installing the Server Initial Server Setup OL-27640-01 NIC Modes and NIC Redundancy Settings Updating the Bios and Cimc Firmware System Bios and Cimc FirmwareAccessing the System Bios DIP Switch Location on the I/O Riser Service DIP SwitchIf These Steps do not Recover the Bios Using the Bios Recovery DIP SwitchInstalling the Server Service DIP Switch Server Configuration Utility Server Monitoring and Management ToolsCisco Integrated Management Interface Front-Panel LEDs Status LEDs and ButtonsLED Name State Rear-Panel LEDs and Buttons Rear-Panel LEDs and ButtonsRear-Panel LED States LED Name State LED Name State Internal Diagnostic LEDsPreparing for Server Component Installation Shutting Down and Powering Off the ServerRequired Equipment Release buttons Front cover panel Removing and Replacing the Server Top CoverSee also -23 on page 3-40for details Replaceable Component LocationsColor-Coded Touch Points Installing or Replacing Server ComponentsDrive Population Guidelines Replacing Hard Drives or Solid State DrivesRelease button Drive tray securing screws Ejector lever Drive Replacement ProcedureDrive Bay Assembly and Transition Card Two Versions Replacing a Modular Drive Bay AssemblyOL-27640-01 Removing and Replacing the Drive-Bay Module FAN Replacing Fan Modules11 Removing and Replacing Fan Modules Replacing a Fan Tray 12 Removing and Replacing a Fan Tray Dimm Performance Guidelines and Population Rules Replacing DIMMsCPU Black Socket Color# of DIMMs Memory Mirroring Mode Dimm Replacement Procedure Replacing CPUs and Heatsinks Open the hinged CPU cover plate. See Figure CPU Replacement Procedure14 CPU Retaining Latches 16 Removing or Inserting a CPU Icon. See -14 on 18 Thermal Grease Application Pattern Replacing the Motherboard RTC Battery 19 Removing and Replacing the Motherboard RTC Battery Replacing a PCIe Riser Assembly 20 Removing and Replacing the PCIe Riser Assembly 21 I/O Riser, Including SD Card Slots Replacing an I/O Riser22 Removing and Replacing an I/O Riser Riser in designated motherboard socket Riser securing screwReplacing an Internal SD Card PCIe Slots Replacing a PCIe CardElectrical Card Length1 Slot Number Lane Width Connector LengthNCSI3 Support Primary Slot Secondary Slot Alternate Slots24 PCIe Riser Assembly Side View PCIe card socket on PCIe riser assembly Card retaining clipReplacing a PCIe Card in a Motherboard Slot 25 Hinged PCIe Card Retainer on Rear of Chassis Minimum Firmware for Nexus OS on an Server VICs Mode Firmware Integration Fabric InterconnectSupported Cisco Card NIC Use With UCS Upstream NexusResolving Insufficient Memory Space to Execute Option ROMs Resolving Insufficient 16-Bit I/O Space 27 vNIC Properties Dialog Replacing the Supercap Power Module RAID Backup Unit 28 Removing the Scpm Installing a Trusted Platform Module 29 TPM Socket Location on Motherboard Set TXT Support to Enabled 30 Removing and Replacing Power Supplies Replacing Power SuppliesEnabling or Disabling the Internal USB Port OL-27640-01 Physical Specifications Table A-1lists the physical specifications for the serverDescription Specification Power Specifications Environmental SpecificationsLength Power Cord Description Feet Meters Supported Power Cords and PlugsPower Cord, 250 VAC 10 a MP232 Plug Switzerland Power Cord, 250 VAC 10 a CEI 23-16 Plug ItalyPower Cord, 250 VAC 13 a IEC60320 Plug North America Power Cord, 250 VAC 13 a Nema 6-15 Plug North AmericaCAB-9K10A-AU AC Power Cord IllustrationsCAB-9K10A-EU CAB-9K10A-SW CAB-N5K6A-NA Figure B-13 CAB-C13-CBN, Jumper Power Cord 0.68 m OL-24342-01 Maximum Optional Required Cables1 Controller Style Drives Supported RAID Controllers and Required CablesRAID Levels With expander3 Two controllers with two nonexpandersMixing Drive Types in RAID Groups Supercap Power Modules RAID Backup UnitsRAID Controller Cabling Mix of Drive Types RAID Group Allowed?334371 334646 334373 For More Information Foreign configurations found on adapterPage OL-27640-01 Installation for Cisco UCS Integration OL-24342-01