We are using deepspace storage for this. We can get/put objects into the cloud as one of our target volumes. It works as an auto archive writing anything in the fs that is over 90 to a compressed object and leaving behind a stub. You can point Harbor (or other tools like Mimir/Loki ) to a DeepSpace endpoint which looks like a standard S3 target. Then add policies and the files get moved, replicated, versioned to tape, cloud, disk array in the background. The users just interact with the file system as usual and admins have a UI with a catalog which shows where everything actually is.