911 Click the [Config.] button.The authentication window will be displayed.2 Enter the administrator name and the password,and then click the [OK] button.The "Disk information" window will be displayed.Format the pre-event recording areaIt is possible to determine the capacity of the pre-event recording area for each camera channel.It may take around 10 minutes to complete the format as the pre-event recording area depending on the number ofcameras.Important:• When the HDD DISK MENU is displayed, all operations (including recording and playback) except the HDDDISK MENU operation will stop.• When the HDD DISK MENU is displayed, all other users accessing this recorder will forcibly be logged out. Allother users accessing this recorder will also forcibly be logged out when performing the HDD unit installation/uninstallation.• When exiting from the HDD DISK MENU, be sure to click the [Main] button. Do not click the [X] button at the topright of the window, otherwise it may cause mulfunction.• Before formatting as the pre-event recording area, configure the following settings for the camera channels forwhich the pre-event recording area is to be assigned.• Configure the settings for "Model/Compression", "Address", "User name" and "Password" on the NW cam-era setup page.• Configure the pre-event recording rate and the pre-event recording duration on the "Program" page.After configuring the settings, access the camera and check if images from the camera are displayed.When formatting as the pre-event recording area while accessing a camera for which the settings are notconfigured and images from the camera is not being displayed, images supposed to be recorded for the setrecording duration may not be recorded.• When operating in the RAID 5/RAID 6 mode without extension units, it is impossible to format the pre-eventrecording area.To perform the pre-event recording in the RAID system, it is necessary to connect an extension unit.