Originating Author: David Floyer
In the 2/26/07 Wikibon Storage Research meeting (see Storage ménage à trois for disaster recovery testing we concluded that certain core infrastructure industries and their suppliers need to consider architecting a three-node data center to improve testing and resiliency. We also concluded that there will be significant internal technology constraints to the adoption of this approach by organizations.
To ensure that they can position themselves in the future for such technologies, organizations should ensure that all key applications and their support applications are identified, and the constraints to adoption of three-node topologies understood and documented. They must also ensure that all new systems do not contain constraints to three-node DR, and when possible and appropriate ensure that existing key systems are modified to remove those constraints.
Key action item: Ensure that there is a robust relationship between the business impact analysis (BIA) outputs and the DR architectures that can minimize the impacts. In particular, ensure that the distance of the “C” site is not so far away that it extends recovery times and compromises the recovery objectives.
