There are three types of failures which can cause multinode persistent data to be lost:

• Failure of a VTAM® node; all local data for the node is lost.
• Failure of a link between a VTAM node and coupling facility structure; the VTAM node involved is unable to access or update data in the structure.
• Failure of a multinode persistent session (MNPS) structure; all of the data in the structure is lost.