Dropbox Deduplication testFollow @sukeesh Follow @sukeeshbabu
It works by breaking files into blocks. Each of these blocks is hashed. Only blocks that are not yet known are uploaded to the server when syncing.
Check : Dropbox blog
I used this video for testing which is
21.8 MB in size.
The freshly downloaded file took 27 seconds ( approx ) to sync. Then, I renamed the file. This duplicate file took 4 seconds( approx )!