How to delete unmanaged disks in local storage
In "Storages => Local storage => Disks => Unmanaged disks" I have a handful of disks that seem to be old, however I can't seem to delete them. Is there a way to delete these? They seem to be using up disk space.
Those are likely "base copy". If it's the case, it's normal because they are "parents" of a VDI chain (snapshot, active disks etc.)
What you can probably safely remove are orphaned disks.
If I migrate a disk from local storage to an NFS virtual disk storage (VDS) on a NAS and then back to local storage, why is there a large amount of data left on the VDS on the NAS? Is this eventually deleted or can I clear the disk which is not being used or is it being used?
Just trying to understand how XCP-ng / Xen works.
It will be deleted after a garbage collector pass.