Informix ER has a number of ways to move data in replicates.
I was doing performance testing of transferring smartblob data from an old server to a new one. The target table was empty for this test. It was about 5gb composed of 100K sized smartblob records.

Obviously having smartblob logging on for important data is the preferred way to do it. You *can* lose data with an engine crash if smartblob logging is off, even if the table itself is logged. However for copies, the fastest way may be with it disabled.