Advanced reliability and failover

Feature	Description	License
		LS	ST	Enterprise	ULTRA
Archive backup	Simultaneous recording of the video archive and database to the main and backup drives installed on the same server	–	–	√	√
Constant camera backup	The cameras are constantly connected to two servers that process and archive video from these cameras. If one of the servers fails, video and archive will be available when connecting to the other server	+	+	√	√
Hot backup of servers	In case of a failure of the server itself or all of its drives, the cameras assigned to it will be processed by other servers, including the broadcasting of the real-time video and the recording to the archive. In case of the fast backing up, the switching to the redundancy server happens within 10 seconds from the moment of losing the connection with the main server In case of the constant backing up, connecting to cameras is performed continuously from two servers that process and archive videos from these cameras. In case one of the servers is down, the video and archive data will be available on another server	+	+	√	√
System monitoring	Monitoring the current state of the video surveillance system components: current status of servers, including their accessibility, CPU and memory load, operability of video analytics and archiving subsystems, network and HDD state, camera connection status as well as monitoring certain other parameters. The monitoring subsystem allows to send notifications regarding critical events via email in accordance with the list and levels of control parameters set by the user	–	–	√	√

√	available
+	available at additional cost
–	not available