Storage (disk subsystem) prerequisites for hardware mirroring

This solution requires IBM® Metro Mirror (PPRC).

PPRC is implemented and branded as IBM System Storage® Metro Mirror for the IBM Enterprise Storage Server® (ESS) and it is available with the IBM DS8000® family of products.
Most GDPS® installations rely on IBM storage products, however, the external interfaces for PPRC have also been licensed by other enterprise storage vendors. This means that you can select the disk subsystems that best match your requirements and to mix and match disk subsystems from different storage vendors within the context of a single GDPS solution.