Method and system for the virtualized storage of a digital data set

System (10) of virtualized storage of a digital data set (40), comprising several network interconnected (26, 30, 34) hardware storage resources (501, 502, 503, 521, 522, 541, 542, 543, 544), means (141, 142, 143, 144, 145) for generating a set of virtual storage spaces of first level (50, 52, 54) in which each virtual storage space of first level is associated with part of the hardware storage resources and with characteristic parameters linked to said part of the hardware storage resources, characterised in that it further comprises:

• means (141, 142, 143, 144, 145) for creating a virtual storage space of second level (44) associated with a service class (46) parameterized as a function of storage constraints (42) of the data set (40) and for assignment of this virtual storage space of second level (44) to the data set (40),
• means (141, 142, 143, 144, 145) for selecting at least one virtual storage space of first level (50, 52, 54) by comparing the service class (46) of the virtual storage space of second level (44) with the characteristic parameters of each virtual storage space of first level, and
• means (141, 142, 143, 144, 145) for storing the data set in the hardware resources associated with the virtual storage space of first level selected (50, 52, 54).