Example of Distributed Parity RAID | Dell (PERC) S100, PERC S300

Figure 2-3. Example of Distributed Parity (RAID 5)

stripe element1	stripe element2	stripe element3	stripe element4	stripe element5	parity (1-5)
stripe element7	stripe element8	stripe element9	stripe element10	parity (6-10)	stripe element6
stripe element13	stripe element14	stripe element15	parity (11-15)	stripe element11	stripe element12
stripe element19	stripe element20	parity (16-20)	stripe element16	stripe element17	stripe element18
stripe element25	parity (21-25)	stripe element21	stripe element22	stripe element23	stripe element24
parity (26-30)	stripe element26	stripe element27	stripe element28	stripe element29	stripe element30

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Overview

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Dell (PERC) S100, PERC S300 manual Example of Distributed Parity RAID

Contents

User’s Guide February Contents Installing the Perc S300 Adapter Complete the Hardware InstallationInstalling the Microsoft Windows Drivers Physical Disk-Related Errors RAID Technology Understanding Disk Arrays Industry Canada Notice Canada Only Contents Page Safety General Safety When Working Inside Your System Protecting Against Electrostatic Discharge Page Overview Introduction Overview Supported Platforms Requirements Physical disks Overview Boot to it About RAID Summary of RAID Levels Disk Mirroring RAID TerminologyDisk Striping Spanned RAID Levels Parity Data Example of Distributed Parity RAID Description FeaturesGeneral Features Description Allows hot-swapping Physical disks, in the same virtual disk Disks That supports hot-swapping Backplane with hot-swap capability Features Virtual disk Migration during an OCE Specifications RAID General Considerations Hardware InstallationBefore You Begin Installing the Perc S300 Adapter Installing a Perc S300 Adapter Connecting the Cables Complete the Hardware Installation Connect Physical Disks to the Perc S300 Adapter Hardware Installation Downloading the Controller Driver Media Installing the DriversInstalling the Microsoft Windows Drivers To Use Pre-Installation Requirements for the Controller DriversOperating System And Device Driver Media Sata Controller to either ATA Mode or Ahci Pre-Installation Procedures For The Controller Drivers Steps DVD, and so on, perform the following For Microsoft Windows Server 2008 and Windows Server 2008 R2 For Microsoft Windows Server For Microsoft Windows Server 2008 and Windows Server 2008 R2 Installing the Drivers Installing the Drivers RAID Configuration Management Perc Virtual Disk Management Utility Operations Description Accessing the Perc Virtual Disk Management Utility Perc Virtual Disk Management Text Colors Description Initializing Physical Disks Creating Virtual Disks Before You Begin RAID Configuration and Management Deleting Virtual Disks RAID Configuration and Management Swapping Two Virtual Disks Delete a Global Hot Spare Managing Global Hot SparesCreate a Global Hot Spare Viewing Physical Disk Details Viewing Virtual Disk Details Controller Options Controller Options Description How to OperateRescanning Disks Continuing to Boot Pause if Degraded RAID Configuration and Management RAID Mode to ATA Mode TroubleshootingSystem Startup Problems Boot Mode, Boot Sequence Bios Bios Screen Corrective Action Lost This warning message appears when multiple virtual disks are Bios not Installed User Disabled INT13 Bios Load From virtual disk creation Virtual Disk-Related Errors On the virtual disk A Virtual Disk is in a Failed State Redundant virtual disk 12. Cannot Create a Global Hot Spare Select View Virtual Disk Details Physical Disk-Related Errors 14. a Dedicated Hot Spare Fails Troubleshooting Controller Specifications Appendix aRead, Write, and Cache Policy S300 adapter Controller Tasks Physical Disk TasksTable A-3. Physical Disk Tasks Physical Disk Task Name Perc S300 adapter Virtual Disk Tasks Supported RAID LevelsTable A-4. Virtual Disk Tasks Virtual Disk Task Name Adapter Virtual Disk Specifications Appendix B RAID Technology Understanding Disk Arrays and Virtual Disks Understanding RAID Levels Appendix B Disk States Virtual and Physical Disks Table B-2. Physical Disk States Definition Failure States Table B-3. Virtual Disk States State Definition Table B-5. Minimum and Maximum Physical Disk Configurations Creating Virtual Disks Future ExpansionUnderstanding Physical Disks Physical Disk States Dedicated Hot Spares Rescanning Physical Disks for Changes in State Global Hot Spares Appendix C Regulatory Notices FCC Notice U.S. Only FCC, Class a FCC, Class B Industry Canada Notice Canada Only CE Notice European UnionIndustry Canada, Class a Industry Canada, Class B Appendix C CE Mark Notice Appendix D Contacting Dell Appendix D Index Index Index 100 101 102 Glossary 103 104 105 106 107 Acronym for nanoseconds, one billionth of a second 108 109 110