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Distributed architecture can operate in the failover mode. If the connection with one of distributed system Servers fails, then this mode enables transfering transferring the configuration created under the Server to a Standby Server. A Standby Server temporarily becomes a video server and records archive in accordance with the settings of the Computer object that corresponds to a Standby Server (see Selecting the disks for video archive storage). When the connection is restored, the configuration is restored on the main Server.

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Info
titleNote

When moving configuration to the backup Server and getting it back to the main Server the Failover service object generates START and STOP events. These events can be used in scripts for flexible system configuration. See For examples, see Examples of scripts in JScript language section of Programming Guide (JScript).

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The AxxonPlayer.exe utility can be used to access the archive created by the standby Server on NAS or local drive (see The Axxon Player utility for viewing and converting the video archive). Alternatively, the main and the backup Server archives can be synchronized through the Backup archive module (see Configuring archive synchronization of main and backup Servers).

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The number of failover services running on each computer simultaneously can be limited. The Manager of Failover failover services object is used for this. It is created on the basis of the Computer object that is not the Client (see Role-assignment in distributed system).

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