Archive management

FEATURE	ОS		DESCRIPTION
Archive recording modes	√	√	Recording to the archive can be made continuously, by the operator's command, by the camera motion detector, by Eocortex software motion detector, by any video surveillance system event, as well as on schedule, including the possibility to combine other recording modes with the scheduled one
Archive arrangement	√	√	The archive of each server stores the recordings of only those cameras that were bound to it at the moment of the recording. The archive is stored on the server’s logical drives that are determined by the operating system. It is possible to use any acceptable devices as storage media: HDD, SSD, RAID, external storage drives, network drives, as well as their combinations. Video and audio data are stored in the archive in the format received from an IP camera. The rate of recording and playback of the archive is only restricted by the hardware. To increase performance while using several logical drives, the recording is made to all the available drives simultaneously. If one of the drives becomes unavailable, the recording of new data to it stops and is redistributed to the available drives. Reciprocally, when the drive becomes available, the recording to it resumes. The archive has a circular structure: when the space allocated for it becomes fully used up, new archive files start to replace the oldest ones, overwriting them, taking into account the archive depth parameters set for each camera
Archive size optimization	√	√	The size of the archive is limited only by the drive capacity and the operating system. Storage limits can be set for each logical drive: maximum size of archive, minimum allowable free space. Various archive size limits can be set for an individual IP camera and for all of them at once. Additional options allowing to reduce the size of the archive are available: skipping of frames without motion, storing key frames only, switching archive recording between low and high-resolution streams
Prerecording and post-recording	√	√	Possibility to set the short intervals of time within which the recording to the archive will be performed before the start of an event that triggers the recording (prerecording) and after the start of an event that triggers the stop of the recording (post-recording). The duration of the intervals can be set in the range of 1 to 10 seconds.
Adding of drives	√	√	Scalable drive space for video archive storage
Archive replication	√	√	Dedicated replication server allows to copy the archives of the set cameras from other servers. The archive depth of the replication server may be different from the original one
Archive depth report	√	√	Creating reports regarding the archive depth allowing to monitor the availability of the archive per camera and per date

FEATURE	ОS		License					DESCRIPTION
			ML	LS	ST	Enterprise	ULTRA
Archive decimation after the preset period of time	√	√	–	–	–	√	√	Reducing the number of frames in the archive after the preset time interval. It is possible to set up the decimation in two stages: after the first interval, the number of frames in the archive is reduced to one preset value, and after the second interval the additional reduction of the number of frames takes place
Episode archive	√	√	–	–	–	√	√	Storing individual archive fragments separately from the main archive without time limit
Long-term database	√	√	–	–	–	√	√	Storing selected types of events in a dedicated database regardless of the archive retention period. Possibility of storing frames in the service database for events of the Face recognition and License plate recognition modules
Saving the archive when moving a camera to another server	√	√	–	√	√	√	√	In a multiserver system, moving a camera to another server is performed without losing its archive, provided that the moving is done with the built-in setting tools of the video surveillance system

√	available
+	available at additional cost
–	not available