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NEC A1160 manual Cooling

Models: A1160

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Cooling

Cooling

Cooling

Each cell is cooled by two fan modules. Each fan module contains two 12-volt high-performance fans that provide the airflow required to cool the cell components and processors. The fan modules are mounted in the front of the cell.

Note: The power supplies within the cell are self-cooled.

The fans have four speeds. The system automatically adjusts fan speed based on the ambient and system component temperatures or under certain failure or maintenance conditions. If a fan fails or is removed, the system switches the remaining fans in the cell to high speed. The fans return to their normal speed when the failure condition is resolved.

The cooling system is n+1 redundant; that is, it can tolerate the failure of one fan. If two fans fail, the cell powers down. If a fan module is removed, the master power control turns off power to the cell after 2 minutes. This allows time for the fan or memory to be replaced.

The fans have a green LED that is on when the fan module is functioning properly. The green LED is off on a faulty fan module or if DC power is not applied to the cell. A fan module can be replaced by a customer.

Figure 2-11 shows the location of the fan modules on the front of the cell.

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NEC A1160 manual Cooling

Contents

Page Proprietary Notice and Liability Disclaimer TrademarksContents System ConfigurationSection IntroductionAppendix ACell Components Figures Page Tables Page Using This Guide Symbols and ConventionsWho Should Use This Guide Related DocumentsRelated Documents Safety Notices Safety Notices temperature of 89.6Fxiii Page Documentation Updates IntroductionSection Scalable Symmetric Multiprocessing ServersCustomer Installation and Servicing Reliability, Availability, and ServiceabilityOperating Systems Modular ExpansionLinux Operating Systems Virtual Machine MonitorsVirtual Machine Monitors Page Section Cell ComponentExpress5800/A1160 Cell Figure 2-1Basic Cell ProcessorsProcessor Sockets Supported Processors Rules for Mixing ProcessorsMulticore Processors Extended Memory 64 Technology EM64TProcessors Processor Voltage Regulator ModulesNode Controller Figure 2-3Node Controller MemoryMemory DIMM Slot Numbering Figure 2-4Memory BoardsDIMM Capacity and Cell Memory Rules for Memory ExpansionFigure 2-5DIMM Numbering Table 2-1DIMM Capacity and Cell MemoryIndicators on the Memory Board I/O SubsystemDynamic DIMM Sparing Memory MirroringPCIe Card Carrier Figure 2-6I/O Riser BoardFigure 2-8External Card Slots PortsFigure 2-7PCIe Card Carrier Inbuilt RAID Controller Figure 2-9Ports on Back of the CellPower AC/DC Power SuppliesFigure 2-10Power Supplies Power Supply Indicators Power ControlPartitions and Power Uninterruptible Power Supply UPS200-VoltRedundancy and AC Source Options CoolingCooling Peripherals Peripherals2-15 Figure 2-11Fan ModulesExternal Peripherals Boot OptionsFigure 2-12Peripherals on the Drive Tray System Clocks EXPRESSSCOPE MonitorSystem Clocks 2-17Fault Messages on the EXPRESSSCOPE Monitor LCD Fault Messages on the EXPRESSSCOPE Monitor LCD2-18 Figure 2-13EXPRESSSCOPE MonitorFault Messages on the EXPRESSSCOPE Monitor LCD 2-19Inbuilt Virtualization Trusted Platform Module TPMInbuilt Virtualization 2-20System Configuration Cell Interconnect and Multiple Cell SystemsSection Multiple-CellSystemsFigure 3-3System with Four Cells Cell Interconnect and Multiple Cell SystemsFigure 3-2System with Two Cells Cell Identification Cell IdentificationSystem Serial Number Figure 3-4System Serial Number Label CabinetsCabinets Partitions ClusteringFigure 3-5Cabinet Configuration PartitionsRedundant Configurations Replaceable ComponentsRedundant Configurations Clustering SoftwareTable 3-2Minimum and Maximum Configurations Express5800/A1160 Configuration SummaryExpress5800/A1160 Configuration Summary Page Section System ComponentsServer Management Maintenance LAN MLAN Service ProcessorNetwork Components CellsWindows Domain Controller Management ServerClient Workstation Console Manager Client SoftwareMain Components Management ArchitectureIntelligent Platform Management Interface Figure 4-1Management Architecture Management BoardManagement Board Firmware Hub Service ProcessorFigure 4-2Management Board Remote Console Interfaces Trusted Platform Module TPMPorts Other Management LogicHardware Components BIOSServer Management Software Figure 4-3Server Management Hardware Components Management Software ComponentsESMPRO Manager and Agent Remote Monitoring Accessing Remote MonitoringAppendix A Components on the Front of a CellCell Components Figure A-1Front of the CellComponents on the Rear of a Cell Table A-2Component on the Rear of the Cell Components on the Rear of a CellFigure A-1Rear of the Cell Components on the Front of a Cell