Auto-Summary Replication Tables

AVEVA Historian performs two types of replication -- Standard Replication Tables and auto-summary replication.

With auto-summary replication, Historian automatically computes and records an hourly summary as its corresponding real-time data is acquired. This allows Historian to quickly and efficiently retrieve large-volume data for a long duration, even months or years.

The Auto-Summary Replication tables are:

• _AutoReplicationGroup *

• _AutoReplicationRule *

• _AutoReplicationTagEntity *

• _AutoReplicationServer *

• _AutoTag *

• _AutoTagHistory *

  * System-level table. Do not edit.

  Note: The auto-summary feature was available beginning with AVEVA Historian 2017. From the time you installed or upgraded to AVEVA Historian 2017, the system has been creating auto-summary values for your analog tags. To backfill values for time before that instillation or upgrade, you can use the Replication Backfill Manager. For more information, see Adding Auto-Summary Values for a Defined Timeframe in the AVEVA Historian Administration Guide.