One of the new features included with Wonderware Historian version 10.0 is tag replication. You can replicate tags locally, or to a "Tier-2 Historian" for aggregate/summary information. This feature bypasses the event system, and stores information in Historian History Blocks. You can customize tagname conventions for replicated tags, create your own schedules, and more. The purpose of this document is to demonstrate local Historian tag replication for storing analog summarized and state summary values.