Archive Compression Example: Archive Compression of a Filling Tank

In the case of a filling tank, the value (representing the fill level) ramps up, then stops. In this case, the system also uses collector compression, so when the value stops ramping, no more data is sent to the archiver. At some point in the future, the value will begin increasing again.

As long as nothing is sent to the archiver, no raw samples are stored. During this flat time (or plateau), it will appear flat in an interpolated retrieval because the last point is stretched. This illustrates that you should use interpolated retrieval methods on archived compressed data.