How big can your database get before we start running into issues?
Q: The bigger database file is, the more resources it will take to process. How big can the file grow before it starts slowing everything down?
A: By default, raw data (performance values for all polls) is stored for last 24 hours. The historic aggregated data (half-hour averages) is stored for last 100 days (can be changed on Monitoring tab from Settings dialog).
There’s no rule of thumb on how large the database file may be with database still running at acceptable speed. You can start with default settings safely.
Please read more on Settings Dialog help page.