Disaster Recovery for Cloud-Hosted Enterprise Applications

We describe disaster protection and recovery of cloud-hosted enterprise applications both at the cloud infrastructure level and at the application level. We explore scenarios which favor one option over the other, and scenarios where a combination of both are required for effective and end-to-end protection. Through case studies grounded in the experience of implementing disaster recovery for IBM's Cloud Managed Services (CMS) platform, we highlight the complexities of protecting enterprise applications on the cloud. For recovery planning and execution, we present a scheduling algorithm that recovers machines hosted on cloud by taking into account application-level logical dependencies and the business criticalities of the applications.