Apple NMB-003 manual What’s Next?

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RAID 30

RAID level 30 essentially combines RAID 3’s dedicated parity (reliability) and RAID 0’s striping (performance). RAID 30 requires at least six drives. This level provides high reliability; one drive in each data pair could fail and data would still be available.

To create a RAID 30 conﬁguration, you use RAID Admin and Disk Utility. See the document “Using RAID Admin and Disk Utility” on the CD that came with your system for instructions.

RAID 50

RAID level 50 combines RAID 5’s distributed parity (reliability) and RAID 0’s striping (performance). This level requires at least six drives and offers high data-transfer performance.

To create a RAID 50 conﬁguration, you use RAID Admin and Disk Utility. See the document “Using RAID Admin and Disk Utility” on the CD that came with your system for instructions.

What’s Next?

With this overview of RAID technology, you can plan the Xserve RAID conﬁguration that best suits your needs. The next chapter provides detailed examples of the conﬁguration options for each RAID level on the Xserve RAID system.

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Contents User’s Guide Apple Computer, Inc Apple Computer, Inc. All rights reservedContents Using the Xserve RAID System Installing the SystemConnecting Xserve RAID to a Host System and a Network Installing or Replacing ComponentsData Storage Methods Installing Xserve RAID Hardware and SoftwareConnecting a 14-Drive System to a Host Computer or Switch RAID OverviewGlossary Appendix a Specifications Appendix B Safety, Maintenance, and ErgonomicsAbout This Guide Page Introducing Xserve RAID Unpacking the System Introducing Xserve RAID Your System at a Glance-Front Panel Indicates temperature status green is OK, red is failure Your System at a Glance-Back Panel RAIDRedundant, hot-swappable cooling module cools the system Your System at a Glance-Mounting Hardware Use this bar to fasten extenders C and D for a deep rack Page Precautions for Handling the System Preparing to Install Xserve RAID in a RackGuidelines for Installation Use your leg muscles to liftLift with a smooth motion don’t jerk the load up or down Choosing the System’s Location in the RackElectrical Power Rack StabilityOperating Environment SecurityMounting Xserve RAID in a Rack Getting Ready to Install the System Determine the Position for the System in the Rack Follow the instructions in Unpacking the System on Installing the SystemPrepare the System for Installation Two mounting screws for attaching the system to the rack Assemble the Brackets and ExtendersTighten the screws and then remove the template Repeat this procedure for the second bracket and extender Six short screws for assembling two brackets and extenders Secure each bolt with a washer Adjust the mounting Mounting Xserve RAID in a Rack Mount the System in the Rack Secure the System in the Rack or Cabinet Moving the Xserve RAID System System and a Network About Fibre Channel Connections and Cables Installing the Host Bus Adapter Card in the Host SystemConnecting Xserve RAID to a Host System or Switch Connecting the System to Xserve or a Power Mac G4 Connecting Xserve RAID to a Switch or Hub Removing Cables From the Xserve RAID and Host Systems Connecting to a Network Connecting Power to the System Follow these steps to connect a UPS unit to the system Connecting an Uninterruptible Power SupplyPlug one of the system’s power cords into the UPS Using the Xserve RAID System Starting Up the SystemUsing Status Lights and Other Indicators Turning Off the SystemLight manually check If the System Has a Problem About Replacing Components Installing or Replacing an Apple Drive ModuleFollow these steps to install or replace a drive module Security lock Replacing a Power Supply Follow these steps to replace a power supplyReplacing a Cooling Module Installing or Replacing Components Replacing a RAID Controller Module Installing or Replacing a Battery Module Obtaining Additional Replacement Components Installing Xserve RAID Hardware and Software Setting Up the Xserve RAID SystemInstalling the system in a rack or cabinet RAID OverviewScalability for expansion of storage Connecting to an Ethernet networkAbout RAID Storage How RAID WorksData Storage Methods RAID 0+1 requires a minimum of four drives RAID LevelsHardware and Software RAID RAID 3 requires a minimum of three drivesRAID 5 requires a minimum of three drives What’s Next? Tools for Configuring the Xserve RAID System Planning RAID Storage For the Xserve RAID SystemRAID Controllers and Drive Modules Drive modules Controllers System With Four Drive Modules Xserve RAID SchemesRAID RAID 0+1 RAID 1 Schemes RAID 3 or RAID 0+1 and RAID 10 Schemes RAID System With Seven Drive ModulesDisk Mirror Mirror Mirror Hot spare RAID 3 or 5 Hot spare RAID 3 or Disk System With 14 Drive Modules RAID 0+1 Disk Hot spare RAID 1 and RAID 3 or Disk Mirrors RAID1 Hot spare RAID RAID 30 and 50 Schemes Storage Capacities for Xserve RAID Schemes Xserve RAID Hardware Connections Connecting a Four-Drive System to a Host Computer or Switch Connecting a 14-Drive System to a Host Computer or SwitchGlossary Common RAID TermsPage Speciﬁcations RAID Controller SpecificationsFibre Channel PCI Card Specifications Ethernet Specifications Apple Drive Module SpecificationsDimensions and Operating Environment UPS Interface SpecificationsPin D connector Battery Module Optional Information Power Supply SpecificationsCooling Module Specifications Safety, Maintenance, and Ergonomics Important Safety InformationHandling Your System Power SupplyCleaning Your Equipment Safety, Maintenance, and Ergonomics Page Complies with European Directive 89/336/EEC