The illustration shows a Primary site (Prim) connected to a disaster recovery site (DR). Prim is also connected to a test master (TM) using Data Guard. TM has all sparse files, and its parent is TM Monday.

There are two other test masters, located between DR and TM. These are called TM original, which uses the original full data files R/O, and TM Monday, which uses sparse files R/W. There are two additional snapshots that point to TM original, named Joe Snap and Mary Snap. There is one additional snapshot that points to TM Monday, named Joe Snap2. The snapshot Irene Snap points to the snapshot Joe Snap2.