Disaster Recovery success story for Westpac NZ

In The Four Hundred–Bank Says ‘HA’ to System i Hardware Failure, I read the success story of the DR replication platform established to protect against the failure of a critical server for back-end processing for WestPac:

This is a companion discussion topic for the original entry at https://www.funkypenguin.co.nz/opinion/disaster-recovery-success-story-for-westpac-nz/