I have got a trial license for our SLES 11 sp2.
With Yast I did install the latest updates and now I need to update the other servers (which are not connected to the internet).
How would I accomplish this?

Since couple of days sp4 has came out.
I want to update all the servers to sp4, would this be advisable?
Most are production servers, I am afraid of the impact.
I have just one server connected to the internet and can use that to get the updates, the of the servers have no internet connection.