Our engineers are working on options for building geo-distributed disaster-resistant systems that allow key software services to remain operational even in case of a failure of the entire site. Key systems continue to operate at the customer's standby site. Additionally, clustering can be provided at the level of sites through the implementation of "stretched SAN" type systems, Metrocluster at the storage level, Site Recovery and SRM systems at the virtualization level, or through a load balancer at the clustering level of the software providing the corporate service.