A DVD-R DL disc holds up to 8.5GB of data, while a DVD-RW DL disc can hold up to 4.7GB.

DVD-R DL discs are dual-layered, meaning that they have two recording layers that are each capable of holding up to 4.7GB of data. This makes for a total storage capacity of up to 8.5GB.

DVD-RW DL discs are also dual-layered, but they are capable of being rewritten multiple times. This means that you can erase and reuse the same disc up to 1000 times.

DVD-R DL and DVD-RW DL discs are both compatible with most DVD players and DVD-ROM drives. …