Data deduplication is appearing in many forms. Virtual tape libraries, archive storage, disk storage systems, and applications such as email systems, content managers, backup systems and more, are examples of where data deduplication can be applied. It enables more data to be stored on disk or fast access devices. Global data deduplication allows users to deduplicate data across multiple storage landcapes, which can simplify management as companies back up more and more data.In this podcast, W. Curtis Preston, executive editor of the Storage Media Group, discusses the pros and cons of global deduplication, who should consider it, and which vendors are offering it today in this Q&A podcast.