File Types

The following file types are important for settings, logs, configuration, escpecially for disaster recovery.

• .txt is a text formatted file used for purposes such as logs and detailed logs
• .data files are history blocks for numeric and Boolean values, created hourly
• .state files are history files are for maintaining the current state of a dataset
• .object files are history blocks for object values (e.g. strings, json blobs, arrays, etc.), created hourly
• tag.config files contain tag id linked to data stored int the .data and .object files, this file must be recovered with your data files!
• The dataset.state file maintains the current state of the dataset, which is used on dataset initialization to determine whether any hourly history block recovery is required
• The tag.state file maintains the current state of each tag in the dataset, which is used on dataset initialization 
• settings.config is where you can change default directories or drives, logging, and monitoring configurations, and Kestrel network settings. For information, see Time Series Historian Settings