A data processing system includes a data processing arrangement, wherein the data processing arrangement includes computing hardware for executing one or more software products, wherein execution of the one or more software products configures the data processing arrangement to access data from a file system arrangement. The data processing arrangement is operable to load a dynamic linker that is operable to include an intercept library that intercepts file access operations of an executable software product wherein: (i) a virtual file that does not exist on the file system arrangement becomes accessible to the executable software product; (ii) the virtual file is a result of either (a) a just-in-time translation of one or more real files of the file system arrangement, wherein the just-in-time translation is made from one file format to another file format, or (b) conversion of the access operation to an equivalent cloud object-storage access operation(s) on a real object located on the cloud object-storage, or (c) a combination of the just-in-time translation of (a) with the object access conversion from (b). Optionally, at least one of: (iii) the virtual file is a different file format to the real file/object, wherein a compressed file format and the virtual file are mutually different file formats; and (iv) the file formats are genomic file formats.