This contribution proposed an original modelling and algorithmic tools for integrated (re)-planning of supply chain business processes and disaster-tolerance information systems (DTIS). The following models are jointly used: the model of DTIS recovery (modernization) management; the model of DTIS operation control; the model of business-processes management as applied to DTIS-aided activities. The combined algorithms of integrated planning of DTIS operation and recovery (modernization) use these models and apply modern results of the control theory and operation research. The essence and novelty of modelling and integrated planning of DTIS lies in the possibility to relate optimization of business-processes goals with executive data-handling procedures, information processing, and DTIS communication. This provides joint finding of optimal businessprocesses for supply chains using DTIS and management programs for DTIS. The planning algorithms use the fundamental scientific results obtained within the modern control theory operating with complex dynamic objects with reconfigurable structure. The prototype computer program for modelling and integrated planning of supply chain processes and DTIS has been developed.