uhm … DVD’s are notoriously LOUSY! as backup media. Depending on the quality of the disk (and where you store them, which in your case is a no-daylight gun safe = good) your are looking at a shelf life of 5 years or less! Been there, done that and lost a pretty exclusive recording of a live artist :(.
Since you are taking it to your parent’s place on a regular bases already, why not stick one of the external HD’s in the gun safe. Pick it up … sync it with the other one, then store it again.
Even with external HD’s (and at today’s prices), you are well off to copy everything to a new HD every 4 or 5 years. You can then full format (not quick format) the HD and use it again for other stuff.
I don’t know how much music you have, but online storage is becoming a more viable option every day. They store everything on redundant NAS/SAN solutions in the cloud. Accesible from anyplace where you can go online.
Especially if you paid loads of money for this stuff, it may be worth a little bit of money to buy that extra insurance?
Greetinx,
C.
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