Store-and-forward safeguards

Historian uses a store-and-forward method to protect against data loss if communication is interrupted between the data source and Historian.

Systems using the Data Acquisition Subsystem (IDAS) or Historian Client Access Layer (HCAL) to send data to Historian are able to use the store-and-forward method in case of communication breaks. If the data source loses communication with Historian, the source stores the collected data until communication is reestablished. Then, it forwards the stored data to Historian.