RAID Level 1 Configuration | Dell PP521, DCDR01 specs

Another advantage of a RAID level 0 configuration is that it utilizes the full storage capacities of the drives. For example, two 120-GB hard drives combine to provide 240 GB of hard drive space on which to store data.

NOTE: In a RAID level 0 configuration, the size of the configuration is equal to the size of the smallest drive multiplied by the number of drives in the configuration.

RAID Level 1 Configuration

RAID level 1 uses a data-redundancy storage technique known as mirroring to enhance data integrity. When data is written to the primary drive, the data is also duplicated, or mirrored, on the second drive in the configuration. A RAID level 1 configuration sacrifices high data-access rates for its data redundancy advantages.

If a drive failure occurs, subsequent read and write operations are directed to the surviving drive. A replacement drive can then be rebuilt using the data from the surviving drive.

NOTE: In a RAID level 1 configuration, the size of the configuration is equal to the size of the smallest drive in the configuration.

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About RAID Configurations

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Dell PP521, DCDR01 owner manual RAID Level 1 Configuration

Contents

W . d e l l . c o m s u p p o r t . d e l l . c o m April PP521 Contents Connecting Two Monitors With One Monitor With a DVI ConnectorChanging the Display Settings Uninterruptible Power Supplies About RAID Configurations Computer, Keyboard, and Monitor Clearing Passwords Changing Boot Sequence for 117 Technical Support and Customer Service 136 Automated Order-Status Service 137135 137 143 144 Contents Finding Information Finding InformationWhat Are You Looking For? Find It Here What Are You Looking For? Find It Here Warranty information Dell Product Information Guide Use the Service Tag to identify your Computer when you useYour call when contacting support Microsoft Windows License Label Courses, frequently asked questions Community Online discussion with Site Other Dell customersDSS utility. DSS provides critical Select your product model and click How to connect to the Internet Computer and its componentsPeople Another computer Operating System Media About Your Computer Front View of the ComputerFront-panel LEDs Optical-drive panel Power button Power lightPower-saving state Optional optical-drive Back View of the Computer Front-Panel Connectors ConnectorsPower connector Back I/O Back-Panel Connectors Light ConnectorIeee Sound connector To the main speakers in the surround sound setupLine Out/headphone About Your Computer Setting Up Your Computer Setting Up Your ComputerInstalling Your Computer in an Enclosure Setting Up Your Computer Connecting to the Internet Setting Up Your Internet Connection If you have a CD, click Use the CD I got from an ISP Transferring Information to a New Computer Click Next Microsoft Windows XP Setting Up Your Computer Setting Up Your Computer Setting Up a Printer Windows Vista Connecting a USB Printer Printer Cable Restart your system Connecting Two MonitorsConnecting Two Monitors With VGA Connectors TV-OUT connector May not be present on your computer Optional DVI adapter Power Protection Devices Connecting a TVChanging the Display Settings Surge Protectors Power Management Uninterruptible Power SuppliesPower Management Options in Windows XP Line Conditioners Setting Up Your Computer Power Schemes Tab Advanced tab allows you to Place the power options icon Advanced TabWindows taskbar for quick Hibernate Tab Power Management Options in Windows Vista Playing CDs or DVDs Using MultimediaUsing Multimedia CD player includes the following basic buttons DVD player includes the following basic buttons How to Copy a CD or DVD Copying CDs and DVDs Using Blank CDs and DVDs Media Type Read Write Rewritable Adjusting the Picture Helpful Tips Connecting Your Computer to a TV or Audio Device Video TV-out connector Video connector Using Multimedia Video TV-out connector Composite video adapter Standard S-video cable Audio connectorVideo and Standard Audio Video and S/PDIF Digital Audio Pdif digital audio cable Audio input connector Composite Video and Standard Audio Standard audio cable Composite Video and S/PDIF Digital Audio Composite video adapter Component Video and Standard Audio Component video cable Component Video and S/PDIF Digital Audio Component video adapter Component video cable Setting Up the Cyberlink CL Headphones Enabling the Display Settings for a TV Using a Media Card Reader Optional Bluetooth pairing Bluetooth LED MMC/RS-MMC Using Multimedia About RAID Configurations About RAID ConfigurationsRAID Level 0 Configuration RAID Level 1 Configuration Configuring Your Hard Drives for RAID Setting Your Computer to RAID-Enabled Mode Using the Nvidia MediaShield ROM Utility Press Tab to navigate to the Free Disks field Using Nvidia MediaShield Creating a RAID Array Deleting a RAID Array Click Next Rebuilding a RAID Configuration Cleaning Your Computer Cleaning Your ComputerComputer, Keyboard, and Monitor Mouse Non-Optical Floppy Drive CDs and DVDs System Setup Entering System SetupSystem Setup Screens System Setup System Setup Configuration of yourOption is highlighted Settings. Press ESC Current and available Settings System Setup Options MainSingle Dual Advanced Security Power BootChanges, Load Setup Default, and Discard Changes Exit Changing Boot Sequence for the Current Boot Boot SequenceOption Settings Changing Boot Sequence for Future Boots System Setup Clearing Passwords and Cmos Settings Clearing Passwords and Cmos SettingsClearing Passwords Clearing Passwords and Cmos Settings Clearing Cmos Settings Flashing the Bios Troubleshooting Tools Troubleshooting ToolsPower Lights Beep Codes Code Description Suggested Remedy Repetitive Short beeps If the problem persists, contact Dell Exist see Memory in the ServiceDell Support website at See Contacting Dell on System Messages Code Description Troubleshooting Tools Hardware Troubleshooter Dell DiagnosticsWhen to Use the Dell Diagnostics Starting the Dell Diagnostics From Your Hard Drive Insert the Drivers and Utilities media Dell Diagnostics Main Menu Troubleshooting Tools 100 Troubleshooting Battery ProblemsFollow these tips when troubleshooting your computer Troubleshooting Drive Problems Optical drive problems102 Windows XP Error Messages Problems writing to an optical driveHard drive problems 103 104 Ieee 1394 Device ProblemsSee the program documentation for installation instructions 105 Keyboard ProblemsSystems on Lockups and Software Problems 107 C K U P Y O U R F I L E S I M M E D I a T E L Y 108 Memory ProblemsMouse Problems Network Problems Adjust the settings as needed Windows VistaAdjust the settings as needed 109 110 Power ProblemsPrinter Problems Scanner Problems Adjust the settings, as needed111 If the printer is listed, right-click the printer icon Sound and Speaker Problems No sound from speakers112 If the scanner is listed, Windows recognizes the scanner Video and Monitor Problems No sound from headphonesScreen is blank Screen is difficult to read 113 114 Overclocking Problems Power Lights3D image quality is poor Only part of the display is readable Troubleshooting Reinstalling Software What Is a Driver?Reinstalling Software Drivers Reinstalling Drivers and Utilities Using the Drivers and Utilities Media 119 Reinstalling Software 121 122 Using Microsoft Windows System RestoreRestoring Your Operating System 123 Using Dell PC Restore and Dell Factory Image Restore PC Restore or Factory Image Restore 124 125 Reinstalling Software Using the Operating System Media 127 Insert the Operating System disc Specifications 129 130 131 132 An electrical outlet, power strip, or 133Convenience receptacle. The total Percent of the branch circuit rating 134 135 Getting HelpObtaining Assistance Technical Support and Customer Service DellConnect Online Services Problems With Your Order AutoTech ServiceAutomated Order-Status Service 137 Getting Help Before You Call 139 140 Contacting Dell 141 142 Appendix FCC Notice U.S. OnlyFCC Class B 143 Macrovision Glossary 145 146 Glossary 147 148 149 150 151 152 153 Module bay See media bay Glossary 154 155 156 157 158 159 160 161 162 Index Index163 Error messages beep codes, 90 problems Power light, 115 conditions Power options properties 165 Index Wizards Files and Settings Transfer Wizard 167 168