Blu-Ray Disc Recordable Erasable (BD-RE)

Definition - What does Blu-Ray Disc Recordable Erasable (BD-RE) 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 (BD-RE)

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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