Temporary data storage on the CPU and recovery on WinCC

Hello,

in the project we use 2 SCADA computers (WinCC V7.5 + SP2), one RC and the other RT, which are in redundant mode. The project requires that in the event of a failure of both SCADA computers, the CPU (1515-2 PN) stores data for at least 24 hours, and when one of the two SCADA computers is restored, the data is transferred to WinCC. I am interested in whether it is possible to do this or how would this be done.

Thanks for your reply,

greetings