I am using OpenHistorian with a Postgress SQL database and a small number of PMUs.
The d2 file archive is taking a lot of space as I am using historian to store a number of power system parameters in high resolution (100/frame).
My question is whether openhistorian needs the d2 file archiving too when used with a database. I just want to be able to retrieve data for a couple of power system parameters from a couple of PMU devices and export it to CSV for historical time periods using the web interface of historian. Is the archiving needed for this?
Thanks in advance for any advice.