What is this drift_states parameter shown in the vmdb.yaml file used for in EVM/CFME?

Solution Unverified - Updated -

Issue

In the main EVM configuration file:

drift_states: history:  
 :keep_drift_states: 6.months  
 :purge_window_size: 10000 

Please elaborate what is the value means as well as the impact of 10000 value. Where does it takes into effect ?

Environment

  • Enterprise Virtualization Manager (EVM) 4
  • CloudForms 3.0

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