Abstract: An information processing system includes a first apparatus including a first memory and a primary processor, and a second apparatus including a second memory, a third memory, and a secondary processor. Upon receiving each of plural data, the primary processor writes the received data in the first memory and transmits the received data to the second apparatus together with first identification information. The secondary processor writes the data in the third memory in association with the first identification information and transmits a completion notification to the first apparatus. The primary processor transmits a plurality of first identification information to the second apparatus upon determining that all of the plural data are written in the third memory. The secondary processor writes, in the second memory, plural data held in the third memory that respectively correspond to the plurality of first identification information.

Abstract: An information processing device includes a memory and a processor coupled to the memory. the processor is configured to acquire first information indicating functions used by respective information processing systems. the processor is configured to acquire second information indicating functions that are usable by the information processing systems in respective sites. the processor is configured to determine, when a failure has occurred in a first information processing system of the information processing systems installed in a first site of the sites, a second site in which a first function used by the first information processing system is usable based on the acquired first information and the acquired second information. The second site is one of the sites and different from the first site. The second site serves as a first restoration destination in which the first information processing system is restored.