fwdw what do you mean with raid setup? have I to activate something about it?
It depends, if you make a 1 to 1 copy of the the total disk using software that can make a bit by bit image of the the total disk or of each partition, then nothing has to be done.
If you want to copy data from a partition using a file transfer program than you need to assemble the raid array for that partition. If you have little knowledge/experience with linux and rad it may be a difficult process for you.
Easier would be using a program (like Acronis but there are more , to copy partition table and all partitions