Logged and Non-Logged Operations
There are two modes in which bulk-copy operations can occur: logged and non-logged (also known as slow and fast BCP, respectively). The ideal situation is to operate in non-logged mode because this arrangement dramatically decreases the load time and the consumption of other system resources such as memory, processor use, and disk access. However, the default runs the load in logged mode, which causes the log to grow rapidly for large volumes of data.
To achieve a non-logged operation, the target table must not be replicated (the replication log reader needs the log records to relay the changes made). The database holding the target table must also have its SELECT INTO/BULK COPY option set, and finally, the