Blu-Ray Disc Recordable Erasable

What Does Blu-Ray Disc Recordable Erasable Mean?

A Blu-ray disc recordable erasable (BD-RE) is a high-capacity optical disc that can be recorded and erased repeatedly. This is in contrast to Blu-ray disc recordable (BD-R) discs, which can be recorded only once. However, both types of disks are based on Blu-ray technology.


Techopedia Explains Blu-Ray Disc Recordable Erasable

The first Blu-ray disc recordable erasable version was released in 2002 and had a unique BD file system. BD-RE version 3.0 was released in June 2010 and has the following features:

  • Rewritable, multi-layered format in BDAV
  • Offers speeds of 2x and 4x
  • Capable of offering a storage capacity of up to 100 GB
  • Usage of the UDF 2.5 file system

As a BD-RE disk can hold 25 to 100 GB of data, this gives it a significant capacity advantage over regular compact discs (CDs) with a capacity of 650 MB, or DVDs at 4.7 GB. Given that Blu-ray disc recordable erasable can store so much more data in the same physical space as other forms of optical media, it is ideal for high-quality lossless audio and video, as well as other large amounts of data.


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Margaret Rouse

Margaret Rouse is an award-winning technical writer and teacher known for her ability to explain complex technical subjects to a non-technical, business audience. Over the past twenty years her explanations have appeared on TechTarget websites and she's been cited as an authority in articles by the New York Times, Time Magazine, USA Today, ZDNet, PC Magazine and Discovery Magazine.Margaret's idea of a fun day is helping IT and business professionals learn to speak each other’s highly specialized languages. If you have a suggestion for a new definition or how to improve a technical explanation, please email Margaret or contact her…