Good post by Rogerio de Rizzio (obrigado !)
A disaster recovery solution replicating GPFS structures on AIX
Summary: The author presents a guide on how to use the advanced copy features of the new IBM® Storwize V7000® Unified storage system to build a disaster recovery (DR) solution for an IBM General Parallel File System (IBM GPFS™) cluster on the IBM AIX® operating system. The concepts of integrating a storage unit-based replication with the GPFS software are introduced and exemplified.
Get the document here