Description:
Deletion of persistence files from AS backing store was not successful,  even after recovering the spaces without data and the keep_files option set as false.

The steps followed:

• Stop the AS seeders
• Start the AS seeders
• Create space definitions
• recover spaces without data using the below command
• recover space "<space_name>" without data keep_files false

Persistence files were still present in the Backing store.

Steps to follow for deleting data store files. 

• Stop all as-agent, Clients (BW, LEECH connections, Remote connections , as-admin).

• Make sure all the cluster members and remote members are disconnected from the cluster. 
  

• Delete all the data store files (be sure to make a back-up).
  

• Restart the as-agents.
  

• Create the spaces from as-admin. 
  

• Check all the spaces status on in "READY".

• Check if any exceptions on the as-agent log files.