About Data Stores : Clearing the data store
  
Clearing the data store
Appliances will write data references to the data store until it reaches capacity. In certain situations, you must clear the data store. For example, you must clear the data store:
after enabling, disabling, or changing encryption.
before downgrading to an earlier software version.
to redeploy an active-active synchronization pair.
after testing or evaluating the appliance.
after receiving a “data store corruption” or “data store clean required” alarm message.
About data stores
Clearing the data store