Snapshots now use 50% less quota than before, and since the use of quota is divided in half, the operation is twice as fast!
This also means that you don't need as much available quota as before in order to take a Snapshot. For example, before, if you wanted to take a snapshot of a 10GB disk, you would have to have 10GB of unused quota available in your account. At present, however, for the same disk, you just need 5GB free.
See our Snapshot documentation here.