This function allows for the Purge and Archive functions to be run manually (they can also be run automatically via the Task Scheduler).

Note that Archive = copy data from database to an external (XML) file that can be stored and imported later, while Purge = delete data permanently. The user will usually want to use purge and archive functions together.

It is recommended that the user purge non-essential fine resolution (e.g., 1-minute) data for best performance, typically data older than 3 to 24 months, depending on internal procedures.

Separate functions exist for purging/archiving data and for managing Journal Message (internal system log) entries. It is recommended that the Journal Message log be routinely purged through the task scheduler (entries older than 3 months).

To use, the user need only select the desired function (purge, archive, or both), the location for the archive files to be stored, the average interval to be purged, and (if desired) the specific sites/parameters to be archived/purged.

Note that other data (calibration, power failures) are not purged, as they take up very little space.