Geo-redundancy is a disaster recovery practice that backs up data in geographically distributed data centers. This approach safeguards against incidents and guarantees business continuity. For database systems, there are mainly two ways to be geo-redundant: cold (offline) backup and hot (online) backup. Cold backup is more widely used because it’s cheaper and has less impact on online performance. 

However, it’s not easy to build a cost-effective, scalable cold backup solution. There can be challenges in scalability, operations, and costs. In this article, I will offer a solution to these challenges: geo-redundancy backup with cloud storage service.