Autonomous data sharding and topology alterations for disaster recovery preparation

A computer program product for data sharding and topology alterations for disaster recovery preparation, the computer program product comprising a computer readable storage medium having program instructions stored therewith, the program instructions executable by one or more processors, the program instructions executable to:

• estimate time needed to copy a data store of a data center that is assumed offline;
• determine whether the time needed is greater than a recovery time objective (RTO);
• in response to determining that the time needed is greater than the RTO, create a data shard for the data store;
• and
• prior to the data center being offline, alter a current topology of the data store in a network connecting multiple data centers, by copying the data shard to a destination data center that does not contain the data store in the current topology, wherein, with an altered topology, the RTO is met in an event of the data center being offline.

A computer system for data sharding and topology alterations for disaster recovery preparation, the computer system comprising one or more processors, one or more computer readable tangible storage devices, and program instructions stored on at least one of the one or more computer readable tangible storage devices for execution by at least one of the one or more processors, the program instructions executable to:

• estimate time needed to copy a data store of a data center that is assumed offline;
• determine whether the time needed is greater than a recovery time objective (RTO);
• in response to determining that the time needed is greater than the RTO, create a data shard for the data store;
• and
• prior to the data center being offline, alter a current topology of the data store in a network connecting multiple data centers, by copying the data shard to a destination data center that does not contain the data store in the current topology, wherein, with an altered topology, the RTO is met in an event of the data center being offline.