Does the Ubuntu One backend hash/checksum/sha1/whatever files?
I want to know how Ubuntu One handles files.
Does it index every with a unique hash or something and then stores that in a database so that if somebody else uploads the exact same file if doesn't have to store it again? You just get a reference/allowance to access that file. Wuala and some other file storage systems work this way.
If it does not work similarly, how does it work?
Can you help with this problem?
Provide an answer of your own, or ask Tom Arnold for more information if necessary.