Configuring History Storage

By default, Iotellect Server does not store any of events of variable value updates persistently. However, default storage can be enabled in various products based on Iotellect.

System administrators and authorized users may enable historical data storage and configure storage periods for most variables and events. However, configuration methods differ for different system objects.

The methods listed below can be used to set up historical data storage settings for multiple contexts:

• Default storage periods for any events can be configured in Event Processing Rules table. Every rule in this table allows to specify Expiration Period for events in one or multiple source contexts.

• Storage of historical events and value updates can be further customized via Event Storages table. This table allows to forward historical events into multiple storage containers, such as database tables, as well as define which event properties should be kept persistently.

• The Default Synchronization Options table allows to configure default storage period for device variables (specified by their names).

The methods listed below can be used to set up historical data storage settings for specific contexts:

• Storage period for events coming from a particular device can be configured by Device Event Storage Period device account setting

• Storage period for individual device variables can be configured via device setting synchronization properties

• Storage of model variables is configured by History Storage Time and History Rate settings

• Storage of model events is configured by History Storage Time property

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