The saving of data in an information technology (IT) infrastructure offering activity resumption functions is disclosed. For these purposes, a saving system is provided with at least one first and one second sets of data storage and at least one first and one second memory controllers associated with the first and second data storage, respectively. The saving system is furthermore provided with a microcontroller configured to duplicate a stream of commands and of data destined for the first memory controller to the second memory controller in a mode of normal use allowing a local replication of data in the second set of data storage and to address a distinct stream of commands and of data to each of the first and second memory controllers in a mode of remote replication.