Speaking of on-line/cloud storage... Wuala

[jack-rp9/bkPP+cDYtjvyW6yDsg at public.gmane.org (Jack Coats)]

On Sat, Apr 23, 2011 at 10:34 AM, Hsuan-Yeh Chang <hsuanyeh-/E1597aS9LQAvxtiuMwx3w at public.gmane.org> wrote:
> Just out of curiosity, how does cloud storage like Wuala and Dropbox works? ?Do
> they just put your files on the server (like googledoc) and provide a convenient
> user interface, or do they make copies (i.e., sync) of files in each device?
>
> Hsuanyeh

from what I can tell, it uses something like rsync under the covers,
puts a copy
on the central server and on each 'client' machine.  There is an
optimizer that will
sync from the 'closest source', so if you have 3 machines at home and one at the
office, if you change or add a file on one machine at home, they will
'share' the
file directly with each other and the central server, and the office
machine will
appear to share the file a bit more slowly.

That is only by observation, not from any real vendor information.