You might want to take a look at DVD-RAM.lha under disk/misc on Aminet. Here's a snippet from the readme:
Yes, you can use DVD and DVD-RAM drives with your Amiga.
This package contains information on DVD and DVD-RAM hardware with some hopefully useful tools.
DVD UDF Bridge support using standard Amiga CD Filesystems.
CD-ROM, DVD-ROM and DVD-Video disc drivers have been tested.
DVD-RAM Versions 1 & 2 (2.6 GB, 4.7 GB) disc drivers have been tested.
