Both automatic and manual snapshots can be deleted manually, and the quota that will be freed upon deletion is stated in the deletion modal. However, the actual quota taken up by the snapshot can be larger. For example, when multiple snapshots reference the same (deleted but backed-up) file, the file can only be pruned if all snapshots referencing it are deleted. For this reason, deleting any of the snapshots alone will not free up such a file's quota — the quota will be reclaimed only when the last snapshot referencing the file is deleted.