Shadow RAM, Internal Cache CPU Cache, External Cache | NCR S26

Advanced System Configuration

Shadow RAM

The system reserves 256 KB of random access memory (RAM) for the shadow RAM function. This parameter has eight range addresses. When you set these addresses to Enabled, the system BIOS, video BIOS, and I/O ROM functions run directly from the shadow RAM for faster operation. When you set them to Disabled, the functions run normally from ROM.

The address range E0000h - FFFFFh is for shadowing the system BIOS. This item is always set to Enabled and is not user-configurable. The address range C0000h - C7FFFh is for shadowing the video BIOS. Shadow RAM is set to Enabled and is not user-configurable if the Auto Configuration Mode and the Fast Boot Mode parameters on page 2 of the Basic System Configuration menu are enabled. Otherwise, you can disable this item.

The remaining address ranges are for I/O ROM functions.

Internal Cache (CPU Cache)

This parameter enables or disables the internal cache memory. It is set to Enabled and is not user-configurable if you enabled the Auto Configuration Mode and Fast Boot Mode parameters on page 2 of the Basic System Configuration menu. Otherwise, you can disable this item.

External Cache

This parameter enables or disables the external cache memory. It is set to Enabled and is not user-configurable if you enabled the Auto Configuration Mode and Fast Boot Mode parameters on page 2 of the Basic System Configuration menu. Otherwise, you can disable this item.

ECC/Parity Mode Selection

This parameter permits you to enable or disable the ECC and parity check feature. Fast-page mode SIMMs supports both ECC and parity mode while EDO SIMMs supports only ECC mode.

NCR S26 Hot Plug Server User Guide

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NCR S26 manual Shadow RAM, Internal Cache CPU Cache, External Cache, ECC/Parity Mode Selection

Contents

NCR S26 Hot Plug Server Page Contents Adding and Replacing Components Using the Bios Setup Utility IRQ/DMA Using the System Utilities Error Messages Watt Power Supply RequirementsSample Configurations Hot Plug Backplane System Support Log ViiiContents Who Should Read This Book About This Book Related Publications Conventions Used in This BookEnter + Y Chapter Installation and Documentation Overview Step What to Do How to Do It Where to Find Information Where to Start Documentation Documentation and Additional Help Additional Help Compliance and Regulatory Statements Safety ComplianceDeclaration of the Manufacturer or Importer Electromagnetic Compatibility EMC Electromagnetic Compatibility Notice USA Product Type Colred FCC Declaration of Conformity Electromagnetic Compatibility Notices International Using System Features ESD Precautions Front View Identifying System Features Identifying System Features Rear Panel Features Identifying the Rear Panel Features Arranging the System in a Stable Position Bottom View Positioning the System Allowing for Air Circulation Bottom View Opening the System Opening the System Opening the Cabinet Housing Configuring the System Board FeaturesMajor Components System Board Layout System Board Jumper Locations Jumper Settings Jumper Settings Connector FunctionsConnector Functions Jumper Setting Function SW1 Adding and Replacing Components Adding and Replacing Components Installing CPU Boards InstallationTypes of CPU Boards Installing CPU Boards Memory Configurations ConfigurationsUpgrading the Memory Bank Total Memory Restrictions Simm Sockets Installing and Removing SIMMs Installing a Simm Installing SIMMs Removing a Simm Removing SIMMs Reconfiguring the System Upgrading the Video Memory Installing a Video Memory Chip Expanding the PCI System Installing PCI Devices Using the Scsi Feature Identifying Expansion Boards Installing and Removing Expansion Boards Removing a Bracket Installing an Expansion Board Removing an Expansion Board Installing a Board Removing the Upper Front Panel Cover and Frame Installing Drives Securing the Drive on the Frame Installing a 3.5-inch Peripheral Drive 10. Securing the Drive 11. Securing the Drive Guides Installing a 5.25-inch Peripheral Drive 12. Inserting the Drive into the Drive Bay Removing a 5.25-inch Peripheral Drive Installing a Hot Plug Fixed Disk Drive Installing Drives Using the Bios Setup Utility When to Use the Bios Setup Utility Run Setup Message Repeatedly ReceivedBefore Running Setup Bios Utility Entering Setup Basic System Configuration Menu, Basic System Configuration Date and Time Diskette Drives DateTime Selecting the Auto Option IDE Hard Disk Drives Communication Settings System MemorySelecting the User Option Hard Disk Block Mode Enhanced IDE FeaturesOn Board IDE Hard Disk Size 504 MB Num Lock After Boot Large Memory Support ModeAuto Configuration Mode Memory Test Fast Boot Mode Advanced System Configuration, Page One Advanced System Configuration Shadow RAM ECC/Parity Mode SelectionInternal Cache CPU Cache External Cache Operation of ECC Memory at 15 MB 16 MB PCI IRQ Setting PCI System Configuration PCI Slots VGA Palette SnoopOnboard VGA Onboard Scsi Onboard Scsi Boot Device Non-PnP ISA Card Configuration, Page One Non-PnP ISA Card Configuration Expansion ROM Region Non-PnP ISA Card Configuration, Page Two Region Power Saving Configuration Power Management ModePower Saving Configuration IDE Hard Disk Standby Timer System Suspend TimerSystem Wake Up Events Disk Drive Control System Security Drive Control Settings System Boot DriveOnboard Communication Ports Diskette Drive Serial Port 2 Settings Serial Port 1 SettingsSerial Port 1 Base Address Serial Port 2 Base Address Parallel Port Settings Parallel Port Operation Mode SettingsSetting Function Setting a Password Setup PasswordIf You Forget the Password Onboard PS/2 Mouse IRQ Remote Diagnostic Configuration Power On Password Load Setup Default Settings Leaving Setup Hard Disk Drive Types Hard Disk Drive TypesType Cylinders Heads Sectors Per Track Type Cylinders Heads Sectors Per Track Type Cylinders Heads Sectors Per Track Type Cylinders Heads Sectors Per Track Using the System Utilities Identifying the System Utilities Executing AFlash Using the AFlash Bios Utility Quick Way to Execute AFlash Using the Eisa Configuration Utility FunctionsMaking Menu Selections Using the Keyboard Using the MouseKeyboard Function Keys Accessing the ECU Getting HelpMain Menu Configure Computer Learn About Configuring Your ComputerSetting the Date and Time Steps in configuring your computer Maintain System Configuration Diskette Maintain System Configuration DisketteExit from this Utility Important Eisa configuration information Configuring Your Computer Initially Examine switches or print report Examine Switches or Print Report Using the Eisa Configuration Utility Save and Exit Save and Exit Adding Boards Adding or Removing Boards Add or Remove Boards Removing a Board Viewing or Editing Configuration Details See the next page for continuation of the above screen Standard VGA Resources Appendix a Watt Power Supply Requirements Table A-1 -Watt Power Supply Input Requirements Input RequirementsInput Nominal Frequency Variations Output Requirements Table A-2 -Watt Power Supply Output Requirements Output Requirements Appendix B Error Messages Types of Error Messages Software Error Messages System Error Messages Table B-1. Error MessagesMessage Action Mmmmssssooo WXXXX,RYYYY Correcting Error Conditions Appendix C Sample Configurations Types of Sample Configurations Installing the Hardware Sample Standard Configuration Basic System Configuration Configuring the System Settings Non-PnP ISA Card Configuration Advanced System Configuration Power Saving Configuration Remote Diagnostic ConfigurationSystem Security Configuring the PCI Adapters Configuring the Scsi Adapters and Drives Sample Standard Configuration Configuring Memory and Other Baseboard Settings If the ECU Will Not Boot Keyboard Port Enabled as LPT1 3BCh Sample RAID Configuration Install the PCI Ethernet Adapter in PCI slot Advanced System Configuration Power Saving Configuration Sample RAID Configuration On Board PS/2 Mouse IRQ Configuring the Scsi Adapters and Drives Press Esc to return to previous menu Configuring the Memory and Other Baseboard Settings Enabled as LPT1 3BCh Configuring the Mylex RAID Array Group Appendix D Hot Plug Backplane Features Major Components Figure D-1. Hot Plug Backplane Components Hot Plug Backplane Figure D-2. Hot Plug Scsi Drive Tray Components Hot Plug Scsi Drive Tray Scsi Channel Configurations Figure D-3. Single-Channel Configuration Single-Channel Configuration Without External Device Terminator Setting With External Device Figure D-5. Dual-Channel Configuration Dual-Channel Configuration Figure D-6. J3 and J4 Jumper Settings Strapping the Scsi IDs on the Backplane Setting Hard Disk ID Options ID # Strapping the Scsi IDs on the Drive Table D-3. Scsi Drive ID Settings Using the System Board Scsi Connectors Installation Figure D-9. Installing the Hot Plug Backplane Secure the drive to the tray with four screws Figure D-12. Installing the Hot Plug Drive Tray Using an Add-on Scsi Controller Board Installation Using the Hot Plug Feature Appendix E System Support Log Introduction System Identification NCR Hardware Support Services NCR On-Site Hardware Support ServicesNCR Technical Support Web Site NCR Support Phone Numbers Before Placing a Hardware Support CallPlacing a Hardware Support Call Placing a Software Support Call NCR Faxback System List of NCR Support Telephone Numbers United States Support Other Areas Support Table E-1. Support Telephone Numbers for Specific CountriesCountry Toll-free number Toll number PRC Customer Support Agreement Overview System Numbers Support Services Priority Plus Next Day NCR Support Phone Numbers Placing a Hardware Support Call Placing a Software Support Call One Log for All Service Hardware RecordsDifferent Types of Logs Hardware Records Hardware Log CustomerEntry UUU UUU UUU UUU UUU UUU UUU Software Records This page intentionally left blank System Product Serial Number Software Product Log Software Product Log Software Product Log Software Product Log Customer Entry NCR Entry System Software Log Problem Symptom Failure#, error# System Software Log System Software Log System Software Log System Software Log System Software Log System Software Log Hardware Configuration Report Current System ConfigurationAdapter Board Locations System Equipment List PCI Slot PCI Slot 5 Shared Eisa Slot 3 Shared Adapter Board Locations System Equipment List System Equipment List Hardware Configuration Preventive Maintenance General Customer Preventive Maintenance GuidelinesCentral Processor Unit CPU Disk Drives General Customer Preventive Maintenance ProceduresTape Drives Plotters Preventive Maintenance Product Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Preventive Maintenance Timetable Worksheet Preventive Maintenance Timetable Worksheet Preventive Maintenance Reference Sheet Preventive Maintenance Reference Sheet Installation Records Customer Support Agreement List of NCR Support Telephone Numbers NCR Faxback SystemUnited States Support Country Number Index IDE Ventilation Index Index-4