Gaute,
I am sorry i could not reply to your email, our anti-spam box had blocked your email, anyway.....
the server driven migration is the same as "locate and migrate" just make sure you have EVSA as a member of the local administrators group on the machine hosting the home folders.
Check the client logs to make sure the PST is marked ....press and hold shift+control key and click on any of the EV icons in outlook and you will get a "Enterprise Vault Diagnostics" window, in this window click on the option "4" maximum for the level of logging required.
Close outlook, reopen and wait for few minutes. Open the client log as mentioned above and click on "open log". you will now have a txt file open in front of you, press control-f and you will get the find tool, type "marked pst" and click find, this will tell you if the PST has been marked.
Run the locator task and EV should find the PST.
Regards
Suresh K Vangara