Abstract: This method of virtualized storage of a digital data set (40) in a computing system comprising several interconnected hardware storage resources (501, 502, 503, 521, 522, 541, 542, 543, 544) comprises the generation of a set of virtual storage spaces of first level (50, 52, 54), in which each virtual space is associated with part of the hardware storage resources and with characteristic parameters.

Abstract: According to this method of synchronizing a set of software modules of a computing system, each software module is executed on a server of the computing system for the management of a digital data set. The synchronization between two software modules of the set comprises a synchronization (102, 104, 110) of the common data that they manage.

Abstract: A method for synchronizing software modules of an IT system distributed across plural servers interconnected as a network, each software module being executed on a server of the IT system for management of a set of data elements describing a service, and at least a part of descriptive data elements is replicated on plural software modules. The method includes: execution, on a first software module, of an action acting on a descriptive data element, transmission of a synchronization message identifying the action to all the other software modules of the IT system including a replication of this descriptive data element, and on receipt of this message by any of the software modules concerned, execution of the action identified on this software module so as to act on the replication of the descriptive data element located on this software module.