Dell XPS manual RAID Level, Segment Hard drive

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NOTE: RAID levels do not represent a hierarchy. A RAID level 1 configuration is not inherently better or worse than a RAID level 0 configuration.

RAID Level 0

RAID level 0 uses a storage technique known as "data striping" to provide a high data access rate. Data striping is a method of writing consecutive segments, or stripes, of data sequentially across the physical drives to create a large virtual drive. Data striping allows one of the drives to read data while the other drive is searching for and reading the next block.

serial ATA RAID configured for RAID level 0

segment 1		segment 2

segment 3		segment 4

segment 5		segment 6

hard drive		hard drive

Another advantage of a RAID level 0 configuration is that it utilizes the full capacities of the drives. If you have two 120-GB drives installed, you have 240 GB on which to store data.

NOTICE: Because RAID level 0 provides no data redundancy, if one drive fails, then the data on the other drive is also inaccessible. Therefore, ensure that you perform regular backups when you use a RAID level 0 configuration.

RAID Level 1

RAID level 1 uses a data-redundancy storage technique known as "mirroring." When data is written to the primary drive, it is then duplicated, or mirrored, on the other drive. A RAID level 1 configuration sacrifices high data access rates for its data redundancy advantages.

Using Your Computer

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Contents Ieee 1394 connector Headphone connector Microphone connectorSerial connector Fans Diagnostic lightsAbbreviations and Acronyms Contents Optimizing Performance Mail, Modem, and Internet ProblemsUsing Microsoft Windows XP System Restore Restoring the Computer to an Earlier Operating StateResolving Software and Hardware Incompatibilities Protecting Against Electrostatic Discharge Removing and Installing Parts109 105110 128Contents Safety General Safety When Working Inside Your Computer Safety When Using Your ComputerSafety Protecting Against Electrostatic Discharge Safety Ergonomic Computing HabitsSafety Battery Disposal W . d e l l . c o m s u p p o r t . d e l l . c o m Finding Information for Your Computer How to change my display resolution ResourceCD Service Tag and Microsoft Windows LabelDrivers for my computer My computer documentationFinding Information for Your Computer Using Your Computer Opening the Drive Door Connecting Two MonitorsIf both monitors have VGA connectors TV OUT connector DVI white connectorOptional VGA adapter Configuring Graphics Cards Settings and FunctionsIf one of the monitors is a television About Your RAID Configuration About Serial ATA DrivesRemoving the Graphics Card Driver Segment Hard drive RAID LevelSegment Transferring Information to a New ComputerCopying CDs and DVDs How to Copy a CD or DVD Using Blank CD-Rs and CD-RWsHelpful Tips Network Setup Wizard Turning Off Your ComputerIntegrated firewall provided with Windows XP Using Your Computer DDR Memory and Processor Front-Side Bus Intel Performance Acceleration TechnologyHyper-Threading Optimizing PerformanceOverclocking Solving Problems Finding SolutionsFinding Help Information Battery Problems Drive ProblemsFloppy drive problems CD drive problems DVD drive problems Problems writing to a CD-RW driveHard drive problems Under Error-checking, click Check NowMail, Modem, and Internet Problems Error Messages Click Add or Remove ProgramsClick the Change or Remove Program icon General Problems Computer stops respondingProgram stops responding Other software problems Program crashes repeatedlySolid blue screen appears General hardware problems Other technical problemsIeee 1394 Device Problems Keyboard ProblemsClick Printers and Other Hardware Simultaneously press CtrlEsc to display the Start menu Mouse ProblemsNetwork Problems NetworkIntegrity/speed light Power Problems Printer Problems Click Scanners and Cameras Scanner ProblemsNo sound from speakers Sound and Speaker ProblemsVideo and Monitor Problems No sound from headphonesIf the screen is blank Click Appearance and Themes If the screen is difficult to readSolving Problems Diagnostic Lights Light Pattern Problem Description Suggested ResolutionAdvanced Troubleshooting = yellow = green = off Light Pattern Problem Description Dell Diagnostics When to Use the Dell DiagnosticsStarting the Dell Diagnostics Starting the Dell Diagnostics From the ResourceCD Starting the Dell Diagnostics From Your Hard DriveDell Diagnostics Main Menu Option FunctionTab Function Drivers What Is a Driver?Identifying Drivers Reinstalling DriversCreating a Restore Point Using Microsoft Windows XP System RestoreUsing the ResourceCD Click System RestoreRestoring the Computer to an Earlier Operating State Undoing the Last System RestoreClick Performance and Maintenance Enabling System RestoreClick the System Restore tab Click Performance and Maintenance and click SystemReinstalling Windows XP Reinstalling Microsoft Windows XPBooting From the Operating System CD Before You BeginNext Windows XP SetupAdvanced Troubleshooting Front and Back View of the Computer Removing and Installing PartsFront View Computer. Instead, perform a Microsoft Windows shutdownFront View Doors Open Back View Network or broadband jack Removing and Installing Parts Precautionary Measures Before You BeginRecommended Tools Protecting Against Electrostatic Discharge Opening the Computer Cover Page Floppy drive CD/DVD drive Hard drive Inside View of Your ComputerMemory System Board ComponentsDDR Memory Overview Memory Installation GuidelinesInstalling Memory Notch Memory module Cutouts Crossbar PCI Cards Installing a PCI CardNot fully seated card Fully seated card Bracket Filler bracket Alignment guide Alignment bar Retention arm Removing a PCI CardRemoving an AGP Card AGP CardsInstalling an AGP Card DrivesOverview Hard Drive Removing a Hard DriveFloppy drive CD/DVD drives Hard drives Power cable Tabs IDE hard- drive cable Installing a Hard DrivePower cable Tabs IDE hard drive exampleDrive Bracket rails Screws System board ConnectorRemoving a Floppy Drive Floppy DriveTabs Floppy drive Installing a Floppy DriveTabs Floppy drive Power cable Tabs CD/DVD drive cable Audio cable CD/DVD DriveRemoving a CD/DVD Drive Installing a CD/DVD Drive Power cable Tabs CD/DVD drive cable Audio cable Removing the Processor Airflow Shroud Processor Airflow ShroudInstalling the Processor Airflow Shroud Top anchor tabsSide anchor tabs Indentations Bottom anchor tabs Processor Installing the ProcessorProcessor socket Retention module Heat sink processor socket Release tab Removing the ProcessorFront Panel Removing the Front PanelRelease lever Processor Socket Replacing the Front Panel Removing the Drive Door Drive DoorTop bracket hinge Bottom bracket hinge Replacing the Drive Door100 Door bracket/door hinge assemblyHinge tab Door hinges Door bracket Door hinge101 BatteryBattery Closing the Computer Cover102 Cover latch release Security cable slot Padlock ring 103Removing and Installing Parts 105 SpecificationsVideo 106Audio Expansion BusControls and Lights 107108 PowerPhysical EnvironmentalViewing Settings Standard SettingsSystem Setup Screens Boot SequenceChanging Boot Sequence for the Current Boot Clearing Forgotten PasswordsChanging Boot Sequence for Future Boots 110111 Dell Technical Support Policy U.S. OnlyContacting Dell Definition of Dell-Installed Software and PeripheralsDefinition of Third-Party Software and Peripherals 112113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 What is not covered by this limited warranty? What is covered by this limited warranty?Regulatory Notices Limited Warranties and Return Policy129 How long does this limited warranty last?What do I do if I need warranty service? What will Dell do?130 May I transfer the limited warranty? What if I purchased a service contract?Total Satisfaction Return Policy U.S. Only How will you fix my product?132 133 134 Dell Software and Peripherals Canada Only Total Satisfaction Return Policy Canada Only136 Intel’s Three Year Limited WarrantyWhat are Errata? 137Appendix Index 139 IndexProcessor Problems Modem problems Help file, 14 accessing140 Index Index 141 142 Index Wizard, 37 reinstalling, 60 scanner, 44 System Restore

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