Required disk space (size of event viewer database)

The event viewer database can be stored either with the Axxon PSIM configuration database or without it.

You can calculate the disk space required to store the event viewer database using the following formula:

Required disk space, GB = N (pcs) * K (events/hour) * T (days) * 24 (h/day) * 1.2 (KB) / 1024² (KB/GB)

where N is the number of objects that generated events.

K is the average number of events per hour from one object. It is determined experimentally from real conditions. For example, to determine the average number of events per hour for a camera, you need to know how many times per hour motion appears in the camera field of view. Estimation from above: one event once per five seconds. If detectors generate events more frequently, they don't have time to clear the alarm, and events aren't recorded to the database.

T is the depth of the event archive in days; it is specified at the system configuration stage.

1.2 is the space required for storing one event in kilobytes.

Example. There are 250 objects, each of them generates one event per five seconds (that is, 720 events per hour) with the archive depth of 20 days.