Is it necessary to keep the files under below location?
/opt/ConnectALL/Broker/connectall-broker/data/paging
For upgrades, it is being retained. This delays the upgrade process as backup takes longer since more than 900 files piled up over the time.
Is it safe to purge this folder?
3.x
The seda DLQ queue is paged which contains broker messages which were failed. It can be considered as an audit info or reference to go look at later. It is safe to delete.
However, you can consider retaining them for specific period and delete the older ones.