Follow up:
From Enrico: An RBD volume of 300 TB is requested to be back to CEPH team. I'd like to get it back asap, as the cluster hosting is filling up and we do not have new capacity yet.
There is no ticket as this was mentioned in our weekly Monday meeting.

My idea is to keep backups in PDC only. But you should check with Fabrizio, what it his strategy about backups.
What is essential for me is to get those 300TB back.