Apple NMB-003 manual Disk Mirrors RAID1 Hot spare RAID

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You can also set up three mirrored pairs and one hot spare with RAID 1 on one controller, and stripe all the drives together on the other controller using RAID 0, 3, or 5. (The spare is only for the drives on the controller where the spare is located.)

	RAID 3 or 5
	Appears	Disk 1	Disk 2
	as
	Mirrors RAID1 Hot spare RAID 0	Disk 3	Disk 4
	or	Disk 3	Disk 4
	or
	RAID 3 or 5

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Contents User’s Guide Apple Computer, Inc Apple Computer, Inc. All rights reservedContents Installing the System Connecting Xserve RAID to a Host System and a NetworkUsing the Xserve RAID System Installing or Replacing ComponentsInstalling Xserve RAID Hardware and Software Connecting a 14-Drive System to a Host Computer or SwitchData Storage Methods 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 Preparing to Install Xserve RAID in a Rack Guidelines for InstallationPrecautions for Handling the System 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 Prepare the System for Installation Installing the SystemFollow the instructions in Unpacking the System on 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 Connecting Xserve RAID to a Host System or Switch Installing the Host Bus Adapter Card in the Host SystemAbout Fibre Channel Connections and Cables 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 Plug one of the system’s power cords into the UPS Connecting an Uninterruptible Power SupplyFollow these steps to connect a UPS unit to the system 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 Follow these steps to install or replace a drive module Installing or Replacing an Apple Drive ModuleAbout Replacing Components 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 Setting Up the Xserve RAID System Installing the system in a rack or cabinetInstalling Xserve RAID Hardware and Software RAID OverviewConnecting to an Ethernet network About RAID StorageScalability for expansion of storage How RAID WorksData Storage Methods RAID 0+1 requires a minimum of four drives RAID LevelsRAID 5 requires a minimum of three drives RAID 3 requires a minimum of three drivesHardware and Software RAID 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 RAID RAID 0+1 Xserve RAID SchemesSystem With Four Drive Modules 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 Fibre Channel PCI Card Specifications RAID Controller SpecificationsSpeciﬁcations Apple Drive Module Specifications Dimensions and Operating EnvironmentEthernet Specifications UPS Interface SpecificationsPin D connector Cooling Module Specifications Power Supply SpecificationsBattery Module Optional Information Safety, Maintenance, and Ergonomics Important Safety InformationCleaning Your Equipment Power SupplyHandling Your System Safety, Maintenance, and Ergonomics Page Complies with European Directive 89/336/EEC