Neowin contacted Microsoft to ask why the Xbox One lacks a traditional storage viewing or management features. We received a response from a Microsoft spokesperson:
http://www.neowin.net/news/xbox-one-lacks-proper-storage-management-microsoft-says-it-is-automatic
UPDATE:
http://www.neogaf.com/forum/showpost.php?p=90617529&postcount=217
UPDATE 2:
http://www.neogaf.com/forum/showpost.php?p=90634809&postcount=330
Xbox One was designed to make storage management automatic. For saved games, settings, and other information that Xbox One customers save to the cloud, space is virtually unlimited. On the internal hard drive in each Xbox One, games and apps can be uninstalled or reinstalled instantly with the click of the Xbox One menu button. Saved games and settings information is retrieved from the cloud for any game as its being reinstalled. By being smart about how storage is managed, Xbox One keeps everyone playing, watching, and sharing their entertainment content rather than worry about limitations. You can also see how much storage any app uses by pressing the menu button on that app.
http://www.neowin.net/news/xbox-one-lacks-proper-storage-management-microsoft-says-it-is-automatic
UPDATE:
http://www.neogaf.com/forum/showpost.php?p=90617529&postcount=217
That's not how it works.
We do automatically sync Save Games and Upload clips, so there is no need for storage management on that - it's all in the cloud.
For full downloads and Aps we do NOT automatically delete anything. You get a prompt when you run out of space, and you can manually uninstall what you want.
Keep in mind, external storage support is coming post-launch. This is a short-term issue we know needs to get better, but just for clarity we don't auto-delete anything.
UPDATE 2:
http://www.neogaf.com/forum/showpost.php?p=90634809&postcount=330
I've never suggested that people don't need storage management. I completely understand why people want to see what storage they have left. It's a feature that will be enabled later, once we get external storage supported and people need to move things around.
I do think it's unlikely to be an issue in the short term, as people probably won't have enough games to run out of space. But it's something we know is needed and will be enabled later.
In the meantime, we aren't going to be randomly deleting your files IF you end up running out of space. You can manually delete any file as shown in the screen above. Like 360, that will delete the file but the save game will still be stored.
Save game files (and Upload Clips) are not user manageable. In order to prevent save-game collision across different consoles and different states, we manage the sync between the local save game and the cloud.
A copy of your save game is stored locally and synced to the cloud automatically in the background. If you loose internet connectivity, you can play offline and keep saving no problem. Once you reconnect everything syncs again.
The data that is "automatically" deleted are things like DVR caching and other OS or system level caches.
Hope that clarifies. With the exception of automatic save game syncs, data management features are still there. We need to add HDD capacity views and will have that feature in the future.