Hitachi 1000 Advanced ECC, Online Spare Memory, Online spare memory supported configurations

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Advanced ECC

Conventional ECC is intended to correct 1-bit errors and detect 2-bit errors. Advanced ECC, also known as Chipkill, corrects up to four or eight bits of an error that occurs in a DRAM installed on a

x4- DRAM or x8-DRAM type DIMM, respectively. Accordingly, the system can operate normally even if one DRAM fails, as illustrated in Figure 14.

Figure 14. Advanced ECC

Online Spare Memory

Online spare memory provides the functionality to switch over to spare memory if correctable errors frequently occur. This function is enabled to prevent system downtime caused by a memory fault.

BladeSymphony 1000 supports the online spare memory function in the ten patterns of memory configurations listed in Table 5. The shaded sections represent spare banks. Online spare memory excludes the use of the memory mirroring function.

Table 5: Online spare memory supported configurations

Bank	Bank1		Bank2		Bank3			Bank4


Slot	Slot 1	Slot 2	Slot 3	Slot 4	Slot 5	Slot 6		Slot 7	Slot 8

Configuration 1	2 GB	2 GB	2 GB	2 GB	2 GB	2 GB		2 GB	2 GB

Configuration 2	1 GB	1 GB	1 GB	1 GB	1 GB	1 GB		1 GB	1 GB

Configuration 3	512	512	512 MB	512	512 MB	512		512	512
	MB	MB		MB		MB		MB	MB

Configuration 4	2 GB	2 GB	2 GB	2 GB	2 GB	2	GB	None	None

Configuration 5	1 GB	1 GB	1 GB	1 GB	1 GB	1	GB	None	None

Configuration 6	512	512	512 MB	512	512 MB	512		None	None
	MB	MB		MB		MB

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BladeSymphony 1000 Architecture White Paper 23

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Contents BladeSymphony 1000 Architecture Table of Contents Introducing BladeSymphony IntroductionExecutive Summary BladeSymphony 1000 front view Enterprise-Class CapabilitiesData Center Applications System Architecture Overview Front Intel Itanium Server Blade Intel Itanium Server Blade featuresFast Ethernet Two100Base/10Base ports LAN manage Ment SpecificationsBackplane Node link for Three interconnect ports Interface Two ports per partitionFW ROM Atmel Intel Itanium Processor 9100 SeriesHyper-Threading Technology CacheBus throughput from the Hitachi Node Controller Demand Based SwitchingHitachi Node Controller Intel VT Virtualization TechnologyMemory System Baseboard Management ControllerSMP Capabilities Hitachi Node Controller connects multiple server blades Numa Architecture SMP Configuration OptionsFull interleave mode and non-interleave mode L3 Cache Copy Tag Intel Itanium I/O Expansion ModuleEBS Chassis Intel Xeon Server Blade components Intel Xeon Server BladeMicrosoft Windows Server 2003 SP2, Enterprise x64 Edition Intel Xeon 5200 Dual Core ProcessorsFB-DIMM Advantages Intel Xeon 5400 Quad Core ProcessorsOnline Spare Memory Online spare memory supported configurationsAdvanced ECC Memory mirroring Memory MirroringOn-Module Storage PCI-X I/O Module Sub SystemModules PCIe I/O Module Combo Card Embedded Fibre Channel Switch ModulePCI-X I/O Module connector types PCIe I/O ModuleFiber channel switch close-up Total 8 modules mountable FCSW, Ipfc RFC, FCAL2, Fcph Embedded Fibre Channel Switch Module componentsLAN FC-HBA + Gigabit Ethernet Combo CardHitachi FC Controller FC-HBA functions Management SoftwareEmbedded Gigabit Ethernet Switch Scsi Hard Drive Modules Connection configuration for HDD Modules Chassis specifications Chassis, Power, and CoolingModule Connections Redundant Power ModulesTop view and cooling fan modules numbers Redundant Cooling Fan ModulesReliability features Reliability and Serviceability FeaturesReliability Features Switch & Management Module Serviceability FeaturesNV Sram Switch & Management Module componentsBase Management Controller BMC OS Console Console FunctionsRemote Console SVP ConsoleOperating System Support Management SoftwareBladeSymphony Management Suite +1 or N+M Cold Standby Fail-over Operations ManagementDeployment Manager Asset Management Remote ManagementNetwork Management Rack ManagementVirtage High CPU Performance and FeaturesHigh I/O Performance Dedicated ModeShared Mode Integrated System Management for Virtual Machines Fiber Channel VirtualizationShared/Virtual NIC Functions For More Information SummarySierra Point Parkway