Peer-to-peer remote copy support

IBM Peer-to-peer remote copy (PPRC) ensures that a user's disaster recovery environment is not inadvertently destroyed or changed. TDMF is designed to be consistent with this type of data protection.

Standard IBM Peer-to-peer remote copy, a synchronous form of disaster recovery, is also supported both functionally and via its command structure as that provided by both EMC and HDS.

At session initialization, TDMF ensures that the characteristics of the source and target volumes involved in a swap migration appear to be the same on all systems in the TDMF session. Throughout the migration, TDMF ensures that these characteristics do not change. If TDMF detects inconsistencies in the PPRC session, then the TDMF session is terminated.