Place your database on the hard disk of the machine that runs the OpenEdge server. If you place the database on a remote file server, synchronous writes are lost along with your database's integrity, in the event of a system crash.
Synchronous writes ensure database integrity by flushing system buffers directly to disk. This is especially important for maintaining the before-image (BI) file. Therefore, if you must keep your database separate from the database server machine, use the before-image filename startup parameter to keep the before-image file local to the database server.
Note: Remote OpenEdge clients do not have to be concerned about synchronous writes because they do not write to the database.