What if there would be part of the storage that prevents overwriting/append files, so you can write once/read many but you cannot delete or append/overwrite. This could be on very low level and you would need some very high permission to change.So, for instance if system determines after few month of usage that you are not changing some files but you are keeping them especially photos/audio/video/docs *(not in git) it would automatically move them there (folder structure would not change but underlying file location would.)Now, what about Databases and large files that are changing constantly. I could imagine this low level storage being in read-only chunks, and chunks would need elevate (super admin) permissions in order to delete them. As main portion of DB data is historical and would not change over time, this could work.My question is, does anything similar already exist, and if not would it be feasible?Please do not give me answers along the lines "yes it exist it is called backup."