IBM EXP15 Hardware Maintenance Manual

Also see for EXP15: Installation and User Handbook

Front controls and indicatorsThe primary controls on the front of the expansion unit areshown in the following illustration.Activity LEDDrive CRUTray handle LatchFault LEDPower on LEDGeneral systemerror LEDBlank tray fillerActivityLED:Each drive CRU has an Activity LED. Whenflashing, this green LED indicates driveactivity. When completely on, this greenLED indicates the drive is properly installed.Blanktrayfiller:Expansion units shipped without a full set ofdrives (10) contain blank trays in the unuseddrive bays. Before installing new drives, youmust remove the blank trays and save them.Each of the 10 bays must always containeither a blank tray or a drive CRU. Eachblank tray contains a filler piece for use witha slim-line drive.DriveCRU:You can install up to 10 hot-swap driveCRUs (customer replaceable units) in theexpansion unit. Each drive CRU consists ofa hard disk drive and tray.FaultLED:Each drive CRU has a Fault LED. When lit,this amber LED indicates a drive failure.When flashing, this amber LED indicatesthat a drive Identify or Rebuild process is inprogress.GeneralsystemerrorLED:When lit, this amber LED indicates that theunit has a fault, such as in a power supply,fan unit, or hard disk drive.Latch: This multipurpose blue latch releases orlocks the drive CRU in place.Power-onLED:When lit, this green light indicates that theunit has good dc power.Trayhandle:You can use this multipurpose handle toinsert and remove a drive CRU in the bay.102 IBM Netfinity EXP15, EXP200, EXP500 HMM