i5/OS™ DDM supports access to keyed physical files via the DDM keyed file model.
An iSeries™ keyed file can have fixed-length record (RECFIX) or variable-length record (RECVAR) for storage. Once a non-iSeries source server opens a file on the iSeries target using variable-length record access, the iSeries target continues to send and receive variable-length records on all subsequent I/O operations.