From OpenSCADAWiki
One the "high-quality" archiver is already sufficient for most tasks, but if you plan to build graphs-trends of the values and reporting documents at a great depth (days, weeks, months), then you need to create a couple of archivers with more periodicity of the values, otherwise building the graphics and documents will be long and/or be cut off by the time limits! Typically, such additional archivers are created, and you must create them identically for the "high-quality" archiver above:
- Minute — the identifier "1m", the address "ARCHIVES/VAL/1m" and the value period 60 seconds.
- Hourly — the identifier "1h", the address "ARCHIVES/VAL/1h" and the value period 3600 seconds.