An IT architect is proposing a plan for improving the resilience of critical data in the organization. The architect proposes that applications be altered so that they confirm that transactions have been successfully written to two different storage systems. What scheme has been proposed?

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An IT architect is proposing a plan for improving the resilience of critical data in the organization. The architect proposes that applications be altered so that they confirm that transactions have been successfully written to two different storage systems. What scheme has been proposed?