An offline library will not receive an operation requests from hosts.
Stop any host activity before taking the library offline. An offline library is unavailable to hosts, therefore taking the library offline is disruptive to host operations.
Click Online or Offline in the upper right corner of the GUI.
Change the library state.
Note:
If there are jobs in-process when you take the
library offline, the library will remain in a "going offline" state until it
completes the jobs, and then transition to "offline".