The present invention relates to a storage method of digital files carried out by a determinist avionic network with predetermined routing. This method comprises a phase (PE) for writing digital files comprising the steps of determining by an end system sending a digital file to be stored, associating a time reference with the digital file to be stored, sending the digital file to be stored with the associated time reference to K separate switches using one or several data frames, generating, via at least some of the switches, a copy of the digital file to be stored and storing this copy in the storage unit of each of these switches with the associated time reference.