I did like the article in general, although if I wanted a really fast method to transfer databases > 2 GB, I would not use this method. sp_attach is a good way to transfer databases when downtime isn't the primary concern, although in the environment I work in, we would not be able to use it. When we need to move a database from one server to the other with as little downtime as possible, we replicate as often as possible before the transfer. Then we take the old server down after one last replication and restore it to the other server. The setup for this process takes a long time, although we can get away with downtime less than 5 minutes. With sp_attach, the file copy would take a long time.