Methodological Approaches to Emergency Recovery of Information Systems in Multi?Contour Environments

Abstract

The article examines a methodological approach to the emergency recovery of information systems in multi?contour environments. The increasing complexity of digital platforms underscores the relevance of this study, the need to segment infrastructures into autonomous technological contours, and the requirement to ensure high recovery speed while maintaining the logical and physical isolation of trust zones. Downtime losses and more burdensome regulations (NIS2, DORA, ISO 22301, IEC 62443) are new pressures on the art of Disaster Recovery. The paper aims to develop and justify methodological principles and algorithms for synchronizing disaster recovery plans across different contexts, while keeping them isolated in terms of target RTO/RPO metrics. Therefore, it includes a review of industry reports, regulatory documents, and practical guides that integrate Business Impact Analysis with threat-scenario modeling, following the NIST SP 800-30 methodology. It lives in two dimensions of novelty: the comprehensive integration of four architectural pillars as a unified framework for multi-contour environments and multi-level failover orchestration, together with contour-aware replication that enables seamless switching. Results are keyed to the facts that this method enables the attainment of the desired RTO and RPO with complete security, lowers the risk of cascading failure, and maintains all paths within the bounds of regulatory requirements. Inside each contour, there is synchronous replication, while between contours, there is asynchronous, encrypted replication, combined with the use of the 3-2-1-1+ backup approach. The involvement of DRaaS providers guarantees business-process continuity, preserving the logical isolation of segments. This article will find its readership among IT infrastructure managers and specialists, cybersecurity engineers, Disaster Recovery Solution architects, and information security auditors.