The history settings page shows some of the long-term history settings. The top section shows the InfluxDB buckets that store tag and performance history. These are currently not configurable.
History Compression
There are currently two settings to manage how often a point will be historized. Use these to tune your system for a balance of disk space available and granularity of data.
Minimum Percent Change (%)
When a tag value is added to long-term history, the value must move by this percentage before being stored again. This can greatly reduce storage demands on devices with fast scan rates. Set the value to zero to disable this feature.
Minimum Time (sec)
If a tag value is not moving much and is not being historized due to the minimum percent change setting, this setting will cause a "confidence sample" to force the value to be stored after an amount of time has passed. Set the value to zero to disable this feature.
In a future update, there will be more advanced settings for managing historization tag data.