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Dell 3 manual Hot Swap, Scsi Drive States, Rebuild Rate, Scsi drive states are listed in Table

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Rebuilding can be done only in arrays with data redundancy, which includes as RAID 1, 5, 10 and 50.

A hot spare can be used to rebuild disk drives in RAID 1, 5, 10, or 50 systems. If a hot spare is not available, the failed disk drive must be replaced with a new disk drive so that the data on the failed drive can be rebuilt.

Using hot spares, PERC 3 can automatically and transparently rebuild failed drives with user-defined rebuild rates. If a hot spare is available, the rebuild can start automatically when a drive fails. PERC 3 automatically restarts the system and the rebuild if the system goes down during a rebuild.

Rebuild Rate

The rebuild rate is the percentage of the compute cycles dedicated to rebuilding failed drives. A rebuild rate of 100 percent means the system is totally dedicated to rebuilding the failed drive.

The PERC 3 rebuild rate can be configured between 0% and 100%. At 0%, the rebuild is done only if the system is not doing anything else. At 100%, the rebuild has a higher priority than any other system activity. The default rebuild rate is 30%.

Hot Swap

A hot swap is the manual replacement of a defective physical disk unit while the computer is still running. When a new drive has been installed, a rebuild will occur automatically if it is placed in the same drive bay as the failed drive it is replacing. PERC 3 can be configured to detect the new disks and to rebuild the contents of the disk drive automatically.

SCSI Drive States

The SCSI drive states are listed in Table 2-3.

Ta b l e 2 - 3 . S C S I D r i v e S t at e s

State	Description

Online	The drive is working normally and is a part of a configured
(ONLIN)	logical drive.
(ONLIN)

Introduction to RAID

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Dell 3 manual Hot Swap, Scsi Drive States, Rebuild Rate, Scsi drive states are listed in Table

Contents

Perc 3 User’s Guide July 5C229 General Safety InstructionsWhen Using Your Computer When Working Inside Your Computer Protecting Against Electrostatic Discharge Ergonomic Computing Habits Battery Disposal W . d e l l . c o m s u p p o r t . d e l l . c o m Contents Operating System Software Drivers Configuration on Disk ConfigurationPerc 3/SC Fault Tolerance Features Perc 3/SC Bios Hardware Architecture Features Array Performance FeaturesConfiguring Scsi Physical Drives Perc 3/QC Features103 Planning the Array Configuration102 119 118120 131150 135136 163 Enabling and Disabling the Cluster Mode 185167 173Designating Drives as Hot Spares 195 190196 197Glossary Index Figures Figures Tables Perc 3/QC Specifications 182 Bios Boot Error Messages C T I O N E r v i e wPerc 3 Overview Perc 3 FeaturesScsi Channels Scsi ConnectorsScsi Bus Widths and Maximum Throughput Single-Ended and LVD Scsi BusesMaximum Cable Length for Scsi Standards Scsi Standard Scsi Bus Width Scsi Throughput Operating System SupportOver view Introduction to RAID RAID Definition Perc 3 Host-Based RAID SolutionFault Tolerance Components and FeaturesPhysical Array Logical DriveDisk Striping Consistency CheckG u r e 2 1 . E x a m pl e o f D i s k S t r i p i n g Stripe WidthStripe Size G u r e 2 2 . E xa m pl e o f D i s k M i r r or i n g Disk MirroringG u r e 2 3 . E x a m pl e o f D i s k S p an n i n g Disk SpanningSpanning for RAID 10 or RAID Describes how to configure RAID 10 and RAID 50 by spanningParity Ta b l e 2 2 . Ty pe s o f Par i t yG u r e 2 4 . E x a m pl e o f Par i t y Hot SparesDedicated Hot Spare Disk RebuildsGlobal Hot Spare Scsi Drive States Hot SwapRebuild Rate Scsi drive states are listed in TableEnclosure Management Logical Drive StatesLogical drive states are listed in Table Ta b l e 2 3 . S C S I D r i v e S t a t e sRAID Levels Overview Perc 3 also supports independent drives configured as RAIDSelecting a RAID Level Tab l e 3 1 . R a I D Le v el sDoes not provide fault tolerance. All data lost if any Fault toleranceRAID 0 provides high data throughput, especially for Large files. Any environment that does not requireG u r e 3 1 . R a I D 0 a r r a y Displays an example of a RAID 0 arrayIdeal for any application that requires fault tolerance Environment that requires fault tolerance but smallUse RAID 1 for small databases or any other CapacityG u r e 3 2 . R a I D 1 a r r a y Requires fault tolerance. Use for any application that Office automation and online customer service thatRAID 5 provides high data throughput, especially for Large files. Use RAID 5 for transaction processingG u r e 3 3 . R a I D 5 a r r a y Displays an example of a RAID 5 array2n, where n is greater than 1. The maximum number Any environment that requires a higher degree of faultRAID 10 works best for data storage that needs 100% Redundancy of mirrored arrays and that also needsG u r e 3 4 . R a I D 1 0 a r r a y High reliability, high request rates, and high data RAID 50 works best when used with data that requiresTransfer and medium to large capacity RAID 50 provides high data throughput, dataG u r e 3 5 . R a I D 5 0 a r r a y Displays an example of a RAID 50 arrayPerc 3/SC Features Specification Feature Configuration FeaturesHardware Requirements Ta b l e 4 1 . C o nf i g u r a t i o n Fe at u r e sTa b l e 4 1 . C on f i g u r a t i o n Fe at ur e s Configuration on Disk ConfigurationSmart Technology Array Performance Features Hardware Architecture FeaturesPerc 3/SC hardware architecture features are shown in Table Perc 3/SC array performance features are shown in TablePerc 3/SC fault tolerance features are shown in Table Perc 3/SC Fault Tolerance FeaturesSoftware Utilities Perc 3/SC software utilities are shown in TablePerc 3/SC specifications are shown in Table Perc 3/SC SpecificationsTa b l e 4 7 . P E R C 3 / S C Specification s Operating System Software DriversCache Memory PCI Bridge/CPUSerial Port Onboard SpeakerScsi Bus Scsi TerminationFeature Description Perc 3 Bios Configuration UtilityScsi Firmware RAID ManagementDell OpenManage Array Manager WebBIOS Configuration UtilityDell Manager Perc 3/DC and Perc 3/DCL Features MB Dimm Perc 3/DC Ta b l e 5 1 . C o nf i g u r a t i o n Fe at u r e sConfiguration on Disk Fe a t u r es Lists the fault tolerance features Fault Tolerance FeaturesTa b l e 5 4 . a r r a y Pe r f o r m a nc e Fe at u r e s Ta b l e 5 5 . Fa u l t To l e r a n ce Fe at u r e sLists the Perc 3/DC and Perc 3/DCL specifications Perc 3/DC and Perc 3/DCL SpecificationsLists the software utilities Ta b l e 5 6 . S o f t w a r e U t i l i t i e sPCI Bridge/CPU Perc 3/DC and Perc 3/DCL Bios Ta b l e 5 8 . S C S I F i r mw ar e RAID Management Perc 3/QC Features Ta b l e 6 1 . C o n f i g u r at i on Fe a t u r e s Lists the Perc 3/QC configuration featuresSmart Technology Lists the array performance features Lists the Perc 3/QC hardware architecture featuresS k Fe a t u r es Ta b l e 6 4 . a r r a y Pe r f o r m a n ce Fe at u r e sSoftware utilities are listed in Table Fault tolerance features are listed in TableTa b l e 6 4 . a r r a y Pe r f o r m a nc e Fe at u r e s Ta b l e 6 5 . Fa u l t To l e r a n ce Fe at u r e sPerc 3/QC specifications are listed in Table Perc 3/QC SpecificationsTa b l e 6 6 . S o f t w a r e U t i l i t i e s Ta b l e 6 7 . P E R C 3 / Q C S pe c i f i c a t i o n sTa b l e 6 7 . P E R C 3 / Q C Pe c i f i c a t i o n s Perc 3/QC Bios Ta b l e 6 8 . S C S I F i r mw ar e Dell Manager Configuring Perc Current Configuration Configuring Scsi Physical DrivesDevice Description Scsi ChannelScsi ID Scsi ID Logical Logical Drive ConfigurationLD2 LD3 LD4 LD5 LD6 LD7 LD8 LD9 Channel Physical Device LayoutTa b l e 7 6 . P h y s i c al D ev i c e L a y o ut W . d e l l . c o m s u p p o r t . d e l l . c o m Ta b l e 7 6 . P h y s i c al D ev i c e L a y o ut Configuring Arrays Arranging Arrays Configuration StrategiesCreating Hot Spares Creating Logical DrivesMaximizing Capacity Fault Tolerance ProtectionMaximizing Drive Availability Description Drives Capacity Level RequiredMaximizing Drive Performance Assigning RAID LevelsOptimizing Data Storage Configuring Logical DrivesData Access Requirements Question Answer Planning the Array ConfigurationArray Functions Using the Array Configuration Planner Ta b l e 7 1 Random Array DeletionOverview 100 Configuration ModulePerc 3/SC Hardware Installation Optional Equipment RequirementsG u r e 8 1 . P E R C 3 / S C C a r d L a yo u t Installation StepsPerc 3/SC Card Layout License agreement Perc 3 configuration utilities diskette Power DownUnpack 104Tab l e 8 1 . P E R C 3 / S C J u mp e r s J1 Termination EnableSet Jumpers J5 Serial Port J9 I2C Interface ConnectorTa b l e 8 3 . J9 N o u tJ8 Hard Disk LED J10 Term PowerJ15 Rubi Slot Interrupt Steering Ta b l e 8 5 . J 8 H a r d D i s k L E DJ16, J17 Rubi Slot Interrupt Steering Set Scsi TerminationG u r e 8 2 . E xa m pl e o f S C S I Te r m i n at i on 108Selecting a Terminator Scsi TerminationTerminating Internal Scsi Disk Arrays 109ID2 111 Install Perc 3/SCG u r e 8 4 . P C I S l o t s o n M o t h e r b o ar d 112 Connect Scsi Devices Connect Scsi CablesG u r e 8 6 . C o n n e ct i n g S C S I C a b l e s 113114 Set Target IDsCable Suggestions Ta b l e 8 Tar g et Power On Host SystemPriority Highest Lowest 115116 Run Perc 3 Bios Configuration Utility or WebBIOS UtilityInstall Operating System Software Drivers Perc 3/DC or Perc 3/DCL Hardware Installation Perc 3/DC or Perc 3/DCL Hardware Installation G u r e 9 1 . P E R C 3 / D C C a r d L a y ou t Perc 3/DC Card LayoutG u r e 9 2 . P E R C 3 / D C L C ar d L ay o u t Perc 3/DCL Card Layout121 Unpack the Perc 3/DC or Perc 3/DCLTa b l e 9 1 . J u mp e r S e t t i n g s J9 Onboard Bios Enable J2, and J3 Termination EnableJ9 Setting Onboard Bios Status JumperJ13 Dirty Cache LED J10 Nvram ClearJ11 Serial Port J14 Scsi Activity LED J16 and J18 Termpwr EnableTab l e 9 6 . J 1 3 D i r t y C ac h e L E D P i n ou t Ta b l e 9 7 . J1 4 S C S I a c t i v i t y P i n o u tJ17 is a 4-pin header. -9 displays the J17 pinout J17 I2C ConnectorTa b l e 9 9 . J 1 7 I 2 C C o n n e ct or P i n o u t 125126 Install the Perc 3/DC or Perc 3/DCL Controller127 128 Select and Set Target IDs for Scsi Devices129 130 Using Driver 5.22.1 or 5.22.2 and Firmware 161J or 161N Install Operating System Software DriverUsing Driver 5.30 and Firmware Proceed to the Windows Device Manager132 C T I O N 1 Perc 3/QC Hardware Installation134 G u r e 1 0 1 . P E R C 3 / Q C C a r d L a yo u t Perc 3/QC Card LayoutUnpack the Perc 3/QC Controller License agreement Perc 3/QC Configuration Utilities diskette137 Ta b l e 1 0 1 . P E R C 3 / Q C J u m p er S et t i n g sJ9, J10, J11, and J12 Termpwr Enable J2, J3, J5, and J7 Termination EnableJumper Term Settings Power Channel 138J17 Dirty Cache LED J19 Onboard Bios EnableJ14 Serial Port J19 Setting Onboard Bios Status J23 External BatteryTab l e 140141 G u r e 1 0 3 . E x a mp l e o f Te r m i n at i o n142 143 Install Perc 3/QCG u r e 1 0 5 . P C I S l o t s o n M o t h e r b o ar d 144 145 G u r e 1 0 7 . C o n n e ct i n g S C S I C a b l e s146 147 Install Operating System DriverPerc 3/QC Hardware Installation Perc 3 Bios Configuration Utility Select Configure Menu-View/Add Configuration Configuration On DiskStarting the Perc 3 Bios Configuration Utility Option Description Bios Configuration Utility Menu Options152 Configure MenuObjects Menu Initialize MenuAdapter Ta b l e 1 1 3 . a d ap t er M en u O p t i on s154 Logical Drive Cluster Mode and the Initiator IDVirtual Sizing Ta b l e 1 1 Log i c a l D r i v e M en u O p t i o ns156 Select Enabled to enable Virtual SizingPhysical Drive Channel Battery InformationTa b l e 1 1 6 . S C S I C h an n e l M e nu O pt i o n s Menu Item ExplanationSelect Reset Battery Charge Counter Reset Battery Charge CounterFormat Menu Rebuild MenuCheck Consistency Menu Configuring Arrays and Logical DrivesNew Configuration Choosing the Configuration MethodEasy Configuration Perc 3/QC and Perc 3/DC Default Settings View/Add ConfigurationPerc 3/SC and Perc 3/DCL Default Settings Displays the default settings for Perc 3/QC and Perc 3/DCUsing the Objects-Physical Drive menu Reserved Disk Space during ConfigurationDesignating Drives as Hot Spares Press F4Using Easy Configuration 164 165 Set the Stripe Size from the Advanced Menu166 Set the Write Policy from the Advanced MenuSet the Read Policy from the Advanced Menu Choose Configure-New Configuration from the Management Menu Using New Configuration168 169 170 Set the Write Policy Set the Stripe SizeSet the Read Policy 171172 Set the Cache PolicyUsing View/Add Configuration 174 175 176 177 Batch Initialization Initializing Logical DrivesIndividual Initialization Deleting Logical Drives Random Array DeletionFormatting Physical Drives Media ErrorsFormatting Drives Select Objects-Physical Drives from the Management MenuBatch Formatting Physical Drive action menu for a physical driveSelect Format from the Management Menu Individual FormattingRebuilding Failed Disk Drives Manual Rebuild Batch ModeManual Rebuild Rebuilding an Individual Drive Choose Rebuild from the Management MenuSelect Configure-Easy Configuration Using a Pre-loaded Scsi Drive As-isSetting Hardware Termination Exiting the Perc 3 Bios Configuration UtilityClustering Cluster ModeEnabling and Disabling the Cluster Mode 186 Select Objects-Adapter-Cluster Mode Select Enable or DisableDell Manager Type this Starting Dell ManagerFirst Dell Manager screen displays the Management Menu Management Menu Options Using Dell Manager in Red Hat Linux GUI ModeDisplays the options for the Dell Manager Management Menu Ta b l e 1 2 2 . M a na g e me n t M e n u O p t i o n sTa b l e 1 2 3 . a d ap t er M en u O p t i on s Dell Manager Menu OptionsParameter Setting Logical Drive SettingsTa b l e 1 2 3 . a d ap t er Me n u O p t i on s 191Displays the options in the physical drive menu Physical Drive MenuTab l e 1 2 192Scsi Channel Battery BackupTa b l e 1 2 7 . S C S I C h an n e l O p t i on s Ta b l e 1 2 8 . B a t t er y B a ck u p M e n u I t e m s194 Reconstruct Menu Parameters Initializing Logical Drives Select Objects-Logical Drive Perform the following steps to initialize one logical driveSelect Physical Drive-Objects Choose Objects-Logical Drive. The logical drives displaySelect Objects-Physical Drive on the Management Menu Choose Format on the Management MenuTa b l e 1 2 Re b u i l d Typ e s Perform the following steps to rebuild one drivePerform the following steps to rebuild more than one drive Exiting Dell ManagerTr o u b l e s h o o t i n g Problem Suggested Solution Message Problem Suggested Solution Bios Boot Error MessagesTa b l e 1 3 2 . B I O S B o ot Error M e s s a ge s 206 View/Add Configuration207 Ta b l e 1 3 3 . O t h er B I O S Error Me s s a g e s Other Bios Error MessagesExplains the other Bios error messages that can display Describes other items that might cause problems Other Potential ProblemsTa b l e 1 3 4 . O t h e r Po t e n t i a l P r o b l e ms Topic InformationTone Pattern Meaning Examples Audible WarningsTa b l e 1 3 5 . a u di bl e Wa r n i n g s Appendix a Scsi Cables and Connectors Appendix a Scsi Cables and Connectors Appendix B Warranties and Return Policy 214 One-Year Limited Warranty U.S. Only215 216 Two-Year Limited Warranty U.S. Only217 Limited Warranty Coverage During Year One218 Limited Warranty Coverage During Year Two219 General Provisions220 Three-Year Limited Warranty U.S. Only221 Limited Warranty Coverage During Years Two and Three222 223 Four-Year Limited Warranty U.S. Only224 Limited Warranty Coverage During Years Two, Three, and Four225 226 One-Year Limited Warranty Canada Only227 228 Two-Year Limited Warranty Canada Only229 230 231 Three-Year Limited Warranty Canada Only232 233 234 Total Satisfaction Return Policy U.S. OnlyExclusions GuaranteeMaking a Claim 235Dell World Trade LP Limitation and Statutory RightsDell Computer de Colombia Corporation Carrera 7 #115-33 Oficina Bogota, Colombia237 Glossary238 239 240 241 242 243 244 245 Gl ossar y 247 D ex248 249 250 Page 5C229 Rev. A04