17Inside the front cover① HDD units [Option]Only the hard disk drive encased in the dedicated harddisk drive canister (HDD units) can be installed in therecorder.Contact your dealer about purchasing, installing, andreplacing the hard disk drives.② HDD status indicator [STS]Indicates the operational status of the respective harddisk drive.Lights green: Indicates that the power of the (formatted)hard disk is on.Blinks green: Indicates that the respective hard diskdrive is for playback use only.(Recording is unavailable using the respective harddisk drive.)Blinks orange: Indicates that the respective hard diskdrive is currently being formatted, added or removed.Blinks red: Indicates that formatting of the hard diskdrive has failed.Off: Indicates that the power of the hard disk drive is off,Indicates that the hard disk drive is not connected/recognized.③ HDD access/failure indicator (A/F)Indicates the status (access/failure) of the respectivehard disk drive.When an HDD failure (error) occurs during operation inthe RAID1/RAID5/RAID6 mode, the indicator will light/blink red.Blinks green: Indicates that the respective hard diskdrive is being accessed.Off: Indicates that the respective hard disk drive is notbeing accessed.Lights red: Indicates that the respective hard disk driveis faulty (which can be recovered by replacing thehard disk drive)In the RAID1/RAID5 mode, it indicates that therespective hard disk drive is the first faulty drive.In the RAID6 mode, it indicates that the respectivehard disk drives are the first and second faulty drive.Blinks red: Indicates that the respective hard disk driveis faulty (which cannot be recovered even by replac-ing the hard disk drive)In the RAID5 mode, it indicates that the respectivehard disk drive is the second faulty drive.In the RAID6 mode, it indicates that the respectivehard disk drive is the third faulty drive.Blinks orange: Indicates the drive in data recovery inRAID1/RAID5/RAID6 mode (it may appear that theindicator lights orange when recovery is being pro-cessed at high speed)④ HDD slotsUp to 9 HDD units can be installed.⑤ Maintenance port (For maintenance purpose only)Use this port to connect directly to a PC and performmaintenance operations. Do not use for normaloperation.⑥ Restart switchRestarts the recorder. Insert a fine stick, like a paper clipand keep pressing for more than 5 seconds.⑦ HDD unit holding bracket fixing thread holeUse this hole to fix the HDD unit holding bracket whentransporting the recorder.* The following illustration shows that 9 HDD units are installed with the "HDD unit holding brackets" removed.Major operating controls and their functions (continued)➀ ➁ ➂ ➃ ➄➆➅