I started administrating our GW system not long ago. The system is here like forever (at least 7 years), With DMS also. infact all the organizations documents for the last 7 years are on this system !

I've noticed that the documents do not expire and therfore there are many documents that we can archive and delete and make the system work better.
How can we do it without putting in danger the current system ?
Is there any documet TID or guide that explains it ?