Roland Unger, 04/11/2012 07:41:
We have two repositories, both with 30.000 files. I reduced the number by a third to take in account that some files are coming from Commons. For instance, I by myself uploaded more than 2,600 files wikivoyage/shared. The estimate of 20,000 files schould be a realistic one.
Except that orphan files don't urgently need to be moved. According to preliminary lists, only 14 thousands files needed to be imported (not all of them actually needed).
Nemo