We attempted to migrate a file server from 2003 to 2012 using the Microsoft File Server Migration Tool. I did the initial copy during the work week since it didn't lock down the shares or anything like that and planned to do the finalization on the weekend. Kicked off the finalization on Saturday morning and found that by the end of the day it was still only at 28%. It was obvious that it was not going to complete by sunday night and we needed a file server up and running for monday so I cancelled it.
tl;dr I ran Microsoft File Server Migration Tool to migrate file server, but there was not enough time over the weekend for it to finalize.
So, I need some help with another solution. I was thinking something along the lines of a continuous sync between the two servers, then i let it run a bit longer on Saturday so any changed files can be...