9Major operating controls and their functions■ Front viewq LCDIndicates the status of the extension unit (error status, etc.)or the name of the functions available using the buttons onthe front panel of the extension unit.w HDD access indicators (HDD1 - HDD9)Indicate the statuses of the hard disk drives.• HDD access indicator (right side)Indicates the status (access/failure) of the respective harddisk drive.When an HDD failure (error) occurs during operation in theRAID 5/RAID 6 mode, the indicator will light/blink red.Off: Indicates that the respective hard disk drive is notbeing accessed.Blinks green: Indicates that the respective hard disk driveis being accessed.Lights red: Indicates that the respective hard disk drive isfaulty (which can be recovered by replacing the harddisk drive).In the RAID 5 mode, it indicates that the hard diskdrive is the first faulty drive.In the RAID 6 mode, it indicates that hard disk drivesare the first and second faulty drives.Blinks red: Indicates that the respective hard disk drive isfaulty (which cannot be recovered even by replacingthe hard disk drive).In the RAID 5 mode, it indicates that the hard diskdrive is the second faulty drive.In the RAID 6 mode, it indicates that the hard diskdrive is the third faulty drive.Lights red and orange alternately: Indicates that the harddisk drive is currently being recovered in the RAID 5/RAID 6 mode.(It may appear that the indicator lights orange whenrecovery is being processed at high speed.)Note:Basically, each indicator will indicate the status of therespective hard disk drive (HDD1 - HDD9).Important:• When the indicator lights red in the RAID 5 mode, replacethe respective hard disk drive immediately. Contact yourdealer about servicing.In the RAID 5 mode: When 2 or more HDD access indica-tors light/blink red, it may be impossible to recoverdata on the respective hard disk drives.In the RAID 6 mode: When 3 or more HDD access indica-tors light/blink red, it may be impossible to recoverdata on the respective hard disk drives.• HDD status indicator (left side)Indicates the operational status of the respective hard diskdrive.Lights green: Indicates that the power of the respectivehard disk drive (formatted) is on.Blinks green: Indicates that the respective hard disk driveis for playback use only. (Recording is unavailableusing the respective hard disk drive.)Blinks orange: Indicates that the respective hard disk driveis currently being formatted or during the recognitionprocess.Lights red: Indicates that formatting of the respective harddisk drive has failed.Off: Indicates that the power of the respective hard diskdrive is off, or that the hard disk drive is not connect-ed/recognized.oq w er t y u i