Any Disaster Recovery (DR) solutions can be mapped into one of the following deployment models:

  • Fault Tolerant: No impacts to the services to users in the event of disaster scenario and users consumes services actively from multiple data centers all the time. This model is also known as multi site active-active deployment.

  • Auto Failover:In the event of disaster scenario users are routed to the disaster recovery site. This model is also known as multi site active-hot-standby deployment.

  • Coordinated Fail-over: Someone needs to call out that it is a disaster event and services platform administratorsí runs configurations updates to make services available at the disaster recovery site and then update configurations to route the users at the disaster recovery site. This model is also known as multi site active-passive deployment.

  • Backup & Build: You will stand up services platform systems from backup and build at the disaster recovery site. You will run minimum verification to ensure that services for users are restored as expected and then manually route the users at the disaster recovery site. This model is also known as multi site active-cold deployment.

The diagram suggests the factors that needs to evaluated to select a DR deployment model for an application platform. In an enterprise, you will find multiple DR deployment models to meet needs of the entire applications portfolio economically.
DR Deployment Model Selection Factors