A scanning unit for inspecting objects comprises in one embodiment a radiation source to emit a beam of radiation, a rotatable platform to support an object for inspection by the beam of radiation and a detector positioned to receive radiation after interaction of the beam with the object. The method and apparatus may employ at least one update agent or a plurality of update agents. The agent programs hide various vendor-specific and technology-dependent aspects of the storage network components from the user. The final appearance of the mosaic is then displayed, it being possible to make changes to the assignation of pieces manually if necessary.