17Outline of functions■ HDD (Hard disk drive)● Mega-pixel camera compatibility/Large amount of storageIt is possible to record high-definition images (in SXGA size: 1280 x 960) such as the image size captured by mega-pixelcameras (equivalent to 4 times the pixels of a JPEG image inVGA size (640 x 480)). This makes it possible to record a wideangle view and to display zoomed images with minimalblurring.Up to 9 hard disk drives can be installed in the recorder torecord high-definition images for long period of time. In addi-tion, up to 5 extension units can be connected to the recorder.● Replacement of the HDD unitsIt is easy to insert/remove the HDD units to/from the HDD slotsin the recorder.("HDD unit" indicates a hard disk drive encased in the providedHDD canister.)When 2 or more HDD units are already installed, it is possibleto replace the HDD units without stopping the currentrecording.Replacement of the HDD units and maintenance can easily bedone by following the guidance displayed on the LCD.The HDDs encased in the provided HDD canisters (hereinafterreferred as HDD units) can easily be installed/ removed in/fromthis product.Contact your dealer about purchasing/replacing the hard diskdrives (HDD units).● HDD managementThe hard disk drives in the recorder are managed by virtuallydividing into 4 recording areas. (Refer to the setup instructions(PDF).)Only one of the 4 recording areas can be assigned to a singlehard disk drive.Recorded data to be stored in each area is as follows.q Normal recording area• Image/audio data recorded by manual recording• Image/audio data recorded by the schedule recording• SD memory dataw Event recording area• Image/audio data recorded by the event recording• Image/audio data recorded by the emergency recordinge Pre-event recording area• Image/audio data recorded by the pre-event recordingr Copy area• Copied dataNote:• When an unformatted hard disk drive is installed in therecorder, it will automatically be formatted as the normalrecording area.• Either the normal recording area or the event recordingarea shall be created.Recording/playback is unavailable even if only the pre-event recording area or the copy area is created.• When there is no normal recording area, images/audiorecorded by manual recording and the schedule recordingwill be stored in the event recording area. When there is noevent recording area, images/audio recorded by the eventrecording and the emergency recording will be stored inthe normal recording area.Display on 21 inch type monitorSXGA (1 280 x 960) Conventional VGA(640 x 480)(4)(2)(3)(1)Copy areaPre-event recordingareaEvent recording areaNormal recording areaRemaining capacities of each recordingarea can be checked on the setup menu.