Global Name Spaces is a data mover for moving data to and from a disk-based archive. Other solutions typically fall into one of two camps; Agent-based data movers or crawl-based movers. The downside to an agent-based system is that there is a piece of software that needs to be installed on each server that is going to participate in the archive process. Some companies can do indexing of the files as they are archived, others can integrate the archive agent with backup.”]
Source: https://www.darkreading.com/database-security/agent-based-data-movers