The steps to archive music on a DVD-Audio disc and extract it back :
Step 1 : Follow the general procedure to author with DVD-Audio Solo
Step 2 : Expand the icon of the DVD drive holding the disc you want to transfer to the PC
Step 3 : Drag & Drop the expanded DVD drive icon to the Project view
Step 4 : Proceed to rip the tracks of the DVD-Audio disc as you would for a CD disc
Step 2 : to extract back the audio from the DVD-Audio disc, expand the icon of the DVD drive holding the disc you want to transfer to the PC by clicking on its associated + icon as follows. If this is a valid DVD-Audio disk, you will see a message "Scanning DVD-Audio disc ... done" in the Status view :
Step 3 : then Drag & Drop the expanded DVD drive icon to the Project view. This will expand the content of the DVD-Audio disc in the groups, as follows :
Step 4 : then proceed to rip the tracks of the DVD-Audio disc as you would for a CD disc, explained here.
Step 1 : Follow the general procedure to author with DVD-Audio Solo, e.g. as illustrated here. Before writing to disc, make sure to uncheck the "Optimize for gapless inter-track" selection in the DVD / Disc panel, as illustrated below.
You can always rip the archived tracks back to files that are exact bit for bit copies of the input files.
A DVD-Audio disc is both an archival media and a play media.
Wen authoring DVD-Audio discs for archival purpose, it is extremely important to choose quality blank media. Stick to known brands like Verbatim, Fuji, Sony, ... Do Internet search for reports on the brands/types that you are considering.
Hard disk drives are prone to failures. With common disk capacities now approaching 500GB, losing a disk can be catastrophic. It is a good practice to backup such disks to other media like DVD discs.