DVD-R and DVD-RAM are different formats of writable DVDs, discs you can use to store video, photos or data. While they're similar in their basic purpose, the two formats differ greatly in most aspects. Understanding these differences can help you determine which format is better suited for your needs.
Reuse and Longevity
One of the biggest differences between the DVD-R and DVD-RAM formats is that data stored on a DVD-RAM disc can be removed or written over, while a DVD-R disc can be burned only once. The similar format, DVD-RW, also features rerecording capabilities, but even DVD-RWs aren't as useful. DVD-RW discs can be rewritten only about 1,000 times, while DVD-RAM discs can see 100,000 rewrites. When it comes to overall longevity though, manufacturers estimate DVD-R discs have lifespans ranging from 30 to 100 years, while the DVD-RAM disc's lifespan is estimated to be a maximum of 30 years.
