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A big data analytics company leverages its proprietary analytics workflow (built using Redshift) to correlate traffic with marketing campaigns and to help retailers optimize hours for peak traffic, among other activities. The company has hired you as an AWS Certified Solutions Architect Professional to review the company's Redshift cluster, which has now become an integral part of its technology solutions. You have been asked to improve the reliability and availability of the cluster in case of a disaster and provide options to ensure that if an issue arises, the cluster can either operate or be restored within five hours. Which of the following would you suggest as the BEST solution to meet the business needs in the most cost-effective way?