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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. For examples, see Examples of scripts in the JScript language section of Programming Guide (JScript) The Script object. Programming using the JScript language.

The configuration transfer time after losing connection with the main Server depends on many factors including but not limited to the following:

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Info
titleExample

The following migration time is confirmed in both directions (i.e. from the main Server to the standby Server and vice versa):

  1. 100 cameras are transferred in less than 20 seconds;
  2. 200 cameras are transferred in less than 30 seconds.

The archive size tested was more than 5TB 5 TB and the Servers hardware as follows:
Main Server: Intel Core i5-8500, 16 GB RAM.
Standby Server: Intel Core i5-8400, 16 GB RAM.

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If the main Server + standby Server operation scheme is in use (see the figure below), it is possible to configure both main and standby Servers for recording on the same network resource or several resources (see Using network disks). In this case, the archive is always available no matter which Server operates with cameras.

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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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If the quantity of cameras is bound to specific Servers in the security key, then the license becomes invalid when cameras are moved to the backup Server. In this case the system gives 50 days to restore the failed Server in order to move the cameras back and the license to become valid again. Otherwise, Intellect will unload on the backup Server because the hardware limit is exceeded (see Features of the Intellect software operation when the object limit is exceeded). The time (in days) remaining for restoring the main Server is displayed on the settings panel of the Failover service object:

If Intellect is normally unloaded shut down on the main Server, the configuration is not transferred to the standby Server.

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The number of failover services running on each computer simultaneously can be limited. The Manager of 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).

If the number of failed Servers exceeds the specified limit, the configuration from the new failed Servers will be transferred to the corresponding backup Server as the previously failed Servers become operational.