IBM 8870 manual Active Memory, Memory scrubbing and Memory ProteXion, Memory mirroring

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Active Memory

Active Memory is an IBM feature that improves the reliability of memory through memory mirroring, memory scrubbing, and the Memory ProteXion feature.

Memory scrubbing and Memory ProteXion

Memory scrubbing tests the memory at regular intervals to detect and report potential memory errors before they can cause server outages.

If a detected error is recoverable, the Memory ProteXion feature corrects the error and rewrites the data to another memory location on the same DIMM. The error is logged in the error log so that you can determine whether preventive maintenance is necessary.

If there are not sufficient undamaged memory locations that the data can be rewritten to, the error is unrecoverable. Other conditions can also cause unrecoverable errors. If a detected error is unrecoverable, LEDs on the Light Path Diagnostics panel are lit to indicate the failing DIMM.

You do not have to enable memory mirroring to use memory scrubbing and the

Memory ProteXion feature.

Memory mirroring

Memory mirroring stores data in memory port 1 and memory port 2 simultaneously. To support memory mirroring, you must install identical dual inline memory modules (DIMMs) in memory port 1 and memory port 2. For more information, see the section about installing memory modules in the Option Installation Guide on the IBM xSeries Documentation CD.

To enable memory mirroring through the Configuration/Setup Utility program, select Advanced Setup from the main menu, and then select Memory Settings. For more information about using the Configuration/Setup Utility program, see Chapter 2, “Configuring the server,” on page 17.

When memory mirroring is enabled, BIOS will only report half of the installed memory. For example, if you have 64 GB of memory installed and memory mirroring is enabled, BIOS will only report 32 GB of memory.

Note: To use the hot-add memory feature, memory mirroring must be disabled in the BIOS code.

The UpdateXpress program

The UpdateXpress program is available for most xSeries servers and server options. It detects supported and installed device drivers and firmware in your server and installs available updates. You can download the UpdateXpress program from the Web at no additional cost, or you can purchase it on a CD. To download the program or purchase the CD, go to http://www.ibm.com/pc/ww/eserver/xseries/serverguide/xpress.html.

Chapter 1. Introducing the IBM xSeries 445 server 7

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Contents ERserver Page ERserver Page Contents Iv xSeries 445 Type 8870 User’s Guide Safety To Connect To Disconnect Do not ≥ 18 kg 39.7 lb ≥ 32 kg 70.5 lb ≥ 55 kg 121.2 lb 82 kg 180 lb XSeries 445 Type 8870 User’s Guide Related documentation Introducing the IBM xSeries 445 serverClick Continue Learn section, click Online publicationsMicroprocessor Features and specificationsWhat your server offers Redundant connection Light path diagnostics featureRedundant cooling and power capabilities Large data-storage capacity and hot-swap capabilityReliability, availability, and serviceability features Memory mirroring UpdateXpress programActive Memory Memory scrubbing and Memory ProteXionIBM Universal Manageability IBM DirectorFront view Server controls, LEDs, and powerXSeries 445 Type 8870 User’s Guide Rear view of model with Remote Supervisor Adapter II-EXA Rear viewRemote Supervisor Adapter II-EXA connectors and LEDs Introducing the IBM xSeries 445 server Turning on the server Server power featuresTurning off the server XSeries 445 Type 8870 User’s Guide Integrated System Management Processor Update program Configuration/Setup Utility programConfiguring scalable partitions Ethernet controller configurationSystem Summary Using the Configuration/Setup Utility programStarting the Configuration/Setup Utility program Configuration/Setup Utility menu choicesSystem Card Data Power-on PasswordSystem Information Product DataStart Options Administrator PasswordAdvanced Setup Memory SettingsError Logs ASM SettingsScalability Port Configuration Scalable Partition SettingsCreating a scalable partition Configuring scalable partitionsConfiguring the server Deleting a scalable partition Remote console redirectionPower-on password PasswordsAdministrator password ServerGuide features Using the ServerGuide Setup and Installation CDTypical operating-system installation Setup and configuration overviewRSA II-EXA Installing your operating system without ServerGuideUsing the LSI Logic Configuration Utility program Configuring the Gigabit Ethernet controllerUsing ServeRAID Manager Configuration wizard window Configuring the controllerClick Express configuration Using express configurationClick Custom configuration Using custom configurationConfiguration summary window ServeRAID Manager window Viewing the configurationServeRAID Manager help menu Getting assistanceHints and tips feature Identifying the Remote Supervisor Adapter Remote Supervisor AdaptersRemote Supervisor Adapter II-EXA features Setting up the Remote Supervisor Adapter II-EXASetup requirements Step Cabling and configuring the Remote Supervisor Adapter II-EXAASM Interconnect port USB connectorManagement ports Connect the RSA II-EXA breakout cable to the server Remote Supervisor Adapter II-EXA connectors Restrict to this brand field, select Servers Restrict to this brand field, select Servers Configuring and connecting to the ASM interconnect network XSeries 445 Type 8870 User’s Guide Configuring the server ASM interconnect network Ethernet configuration ASM interconnect network modem configuration Remote Supervisor Adapter features Setting up the Remote Supervisor AdapterCabling and configuring the Remote Supervisor Adapter PPP Remote Supervisor Adapter connectors Settings for Web-based remote Gateway Network InterfaceIP Address Subnet MaskDedicated to ASM Baud RateStop Bits Line Type Authentication ProtocolRemote IP Address Configuring the server If the installation is from a diskette, type a\NT\SETUP -q Select Save New Remote Control Password then, press Enter Using the ASM interconnect networkXSeries 445 Type 8870 User’s Guide Server name ASM Interconnect module needed Server name ASM Interconnect module needed Configuring the server ASM Interconnect network configuration Connecting modems to the ASM Interconnect network Starting the PXE boot agent utility program Using the PXE boot agent utility programPXE boot agent utility menu choices Before you call Using the documentationXSeries 445 Type 8870 User’s Guide Edition notice Appendix B. NoticesIBM TrademarksProduct recycling and disposal Important notesBattery return program Avis de conformité à la réglementation d’Industrie Canada Industry Canada Class a emission compliance statementEuropean Union EMC Directive conformance statement Taiwanese Class a warning statementXSeries 445 Type 8870 User’s Guide Macedonia former Yugoslav Republic of, Madagascar, Mali XSeries 445 Type 8870 User’s Guide Index LSI Starting server XSeries 445 Type 8870 User’s Guide Page Part Number 02R2784
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