There will be 4 to 5 days maintenance, we have to ask your patience there. What we are planning at the moment: There are some EU recommended servers in an ADC (American Data Center). All the data from these servers will be copied to the EUDC (European Data Center). We will check the safety of the data, if they are secured okay. Once confirmed, we will ask players to log in. So some time is needed for copying the data and also for the check. This is why we have to ask for the 4 or 5 days maintenance, but after the maintenance you just log in and you will be in the new data center. We want to make it as smooth as possible for the players. All the details will become available on a later date, so please keep an eye out.
http://jpgames.de/2015/08/gamescom-2...naoki-yoshida/

Will this be applied to all datacenters or only 'EU'?