This property is used to configure data storage on the agent side.

By default, the file does not include this property.

The default setting of the agent is$\{agent.dataDir\}|m|100|20|50

that specifies that the data directory is used to store the disk lists, of a maximum size of 100MB. The 20 and 50 numbers are used for purging data, meaning that a check runs to see if the list can be shortened when the size is greater than 20MB and the list is 50% empty.