Porous acrylic fibers produced by a method comprising subjecting a spinning dope containing 0. This method creates a basic set of purpose-specific sections in order to store, separated at a physical level and at a logical level, basic elements associated to equipment operation such as operating system, dynamic files, applications and user related files; and, optionally, creates an additional set of purpose-specific sections to store other elements separated in like manner. The device includes a first transformer and a second transformer.