Apple NMB-003 manual Connecting an Uninterruptible Power Supply

Page 44

Connecting an Uninterruptible Power Supply

To protect the system’s operation during an interruption in power, you may want to install an uninterruptible power supply (UPS) in or near the rack that holds your Xserve RAID system. The UPS unit must have a serial interface that supports the basic signaling protocol.

You can obtain a UPS unit through the Apple online store at www.apple.com.

Follow these steps to connect a UPS unit to the system.

1If necessary, install the UPS unit in the rack, using the instructions supplied with the unit.

2Connect one end of a serial cable to the appropriate port on the UPS.

The cable must be conﬁgured to support the basic signalling protocol.

3Connect the DB-9 connector at the other end of the serial cable to the UPS interface on either of the RAID controllers.

UPS interface ports

4Plug one of the system’s power cords into the UPS.

If you connect two UPS units to the system, plug one power cord into each UPS unit.

44 Chapter 4

Image 44

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 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 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 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 Apple Drive Module Specifications Dimensions and Operating EnvironmentEthernet Specifications 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