What is the total storage capacity of a dual-layer DVD?

A dual-layer DVD has a total storage capacity of approximately 8.5GB. This is due to the way dual-layer DVDs are constructed, featuring two distinct layers of data storage on a single disc. Each layer can hold around 4.7GB of data, which, when combined, allows the disc to reach the higher total capacity. This is particularly useful for multimedia content, as it enables longer movies or more complex software to be stored compared to standard single-layer DVDs, which typically hold about 4.7GB. Understanding the capacity of media formats like dual-layer DVDs is essential for proper data management and storage planning.