Use the procedure to disassociate a MediaAgent from a disk access path.
From the navigation, click Storage, and then click Disk.
The Disk page appears.
On the Disk page, click the disk_storage.
The Disk storage page appears.
Click the backup location form which the associated MediaAgent has to be deleted.
The Backup locations page appears.
Under the Disk access paths section, for the MediaAgent that you want to delete, click the Actions button , click Delete and click Yes on the confirmation dialog box.