The Historic Configuration branch of the ClearSCADA Server Configuration Tool includes an Alarm Summary entry. Use the Alarm Summary settings to define the duration, stream size, cache size and so on, for Alarm Summary data. Alarm Summary data comprises the alarm messages that are created and stored when alarms change state.
The Alarm Summary feature is disabled by default. This is because, when enabled, the feature can affect system resources - potentially, it can require as many resources as the Event Journal. Before you enable the Alarm Summary feature, you should consider whether you really need to have detailed alarm summary records. If you do, you will need to enable the feature.
You can use the Alarm Summary settings to:
- Enable or Disable Alarm Summary Data
- Select the Time Field on which to Index
- Specify the Duration to Retain Historic Data Online
- Define the Archive Time for Historic Data
- Specify the Future Data Time for Historic Data
- Define the Stream Size for Maximum Performance
- Define the Historic Data Cache Size
- Configuring the Cache Flush Time and Threshold Limits
- Define the Thread Pool Size.
To fully configure the server settings for the Alarm Summary, you should also configure the Alarm Summary Display Settings (Alarm Summary List).
Further Information