Hi @JamieK thanks for the question.
If these are mount paths that are simply shared between MAs, then sharing these mount paths with the new MA should be solution.
Here is the Impact of Media Agent Deletion page:
https://documentation.commvault.com/commvault/v11_sp20/article?p=122570.htm
Disk Library or Cloud Library
Condition | Impact of Deletion | When to do? | What to Do? |
The mount path is shared with other MediaAgents along with the MediaAgent that you try to delete. | The MediaAgent deletion operation removes sharing with the MediaAgent for the mount path. | | No action is needed. |
The mount path is shared only with the MediaAgent that you try to delete. | The MediaAgent deletion operation removes sharing with the MediaAgent for the mount path. | Before or after you delete the MediaAgent, mandatory | Share the mount path with another MediaAgent. For instructions, see Sharing a Mount Path. |
If mount paths have already been shared to the new MA, then decommissioning the old MA will simply remove the shares associated with the old MA, leaving mount paths shared on the new MA.
If however, these are physically presented volumes and not shared mount paths, then as you suggested, Migrate Shared Disk Libraries from Storage > Libraries > Disk Libraries > Advanced is the correct procedure:
https://documentation.commvault.com/commvault/v11_sp20/article?p=9319.htm#o9350
Thanks,
Stuart
Thanks @Stuart Painter for the info/confirmation. The original MA has the volumes presented to it and configured as mount paths. As yet, the new MA is active and has only had the same volumes presented to it. Nothing further has been configured.
Thanks,
Jamie