Are your electronic information, records or documents (level 3)? You probably need to supply some more details as to what kind of information you are talking about. If it is level 3 information, then standard control procedures must be followed per Element 4.5. However, if the information is records then it must follow your procedure for quality records. The type of media that you use, whether paper or electronic, has to follow your standard procedures. Now, if you are talking about software that is used in some sort of process (NC machines, maintaining quaity records with some sort of database, etc.), then you, as you have stated, have to provide a system for backing up this software on a regular basis.