However, a new and more cost-effective approach to disaster recovery involves replicating to the cloud with both failover and failback capabilities. The key here is an actual failover of operations to the cloud such that business continuity is maintained. Once a failover occurs you have the option to run your applications from the cloud as long as needed, and fail back on premises after recovery. The combination of virtualization and the cloud has made cloud-based DR more affordable.
Determining specific service level agreements will drive a recovery time objective (RTO) and ultimately set the expectations for keeping your critical services available. It’s quite possible that not every service currently provided by your data center would fall into the critical category. Building a comprehensive disaster recovery plan will help to identify the mission critical pieces and make it easier to get things running again should an actual disaster or disruption occur.
A key advantage of cloud-based disaster recovery is in the cloud services business model, where organizations pay on a subscription basis only for the specific set of services required to keep their critical apps replicated to the cloud.
Using the cloud for disaster recovery makes building out a viable failover solution that is much easier—and faster—too. In the long term it can help realize significant capital expenditure savings when compared to building out your own solution. Cloud-based disaster recovery provides the opportunity to improve business resiliency and compliance standards based on cloud-scale economics.
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Paul Ferrill has a BS and MS in Electrical Engineering and has been working with and writing about storage systems for over 25 years.