Scalability? Does it get faster with more nodes?

[mr.canada]

I'd like to know about the scalability of Sync.  I understand how the Bittorrent protocol benefits from more nodes - the more, the better.  Is this also true of Sync?  Specifically, is i have 10 nodes participating in a syncronized folder, and one node adds a large file, what exactly happens?  

-is it uploaded 9 times, once to each of the other nodes?  

-is it uploaded once to one node, who uploads it once to another node, and so on 9 times?

-is it split into pieces and uploaded a total of one time, but with roughly 10% going to each node, who, in turn, share with each other until everyone has 100% of the file?

If Sync uses the 3rd method, then I expect it will scale very well, as more nodes will be a benefit.

[GreatMarko]

Yes, generally speaking the more nodes you have in your Sync "mesh" the faster your files with transfer (note, however, if you have more than 50 nodes in your mesh for any given folder, a maximum of 50 nodes will be connected at any one time)

The ultimate aim of Sync is for your files to sync across all nodes as quickly as possible. Therefore, specifically in relation to large files, the 3rd of your scenarios is essentially true; although it may not be evenly distributed with 10% of the file going to each of the 10 nodes. The distribution will be based upon the speed of each node. i.e. if one of the 10 nodes has a faster connection speed/more bandwidth than another of the nodes, it will receive/send more of the file than the slower node.