Every e-book I own lives multiple lives, on my desktop computer hard drive, on the backup drive that protects said desktop, and eventually on a backup DVD optical disk. (madgeniusclub.com)
Given modern computer hard drive sizes, raw data should be published along with all experimental results, but that is not the norm. (blogs.nature.com)
Those articles were documents, compact discs or computer hard drives upon which material had been electronically stored. (newlawjournal.co.uk)