To make a clarification here:
One thing you could do is buy a "double-layer" dvd-burner which can burn approx 9Gb on a (more expensive) double-layer DVD. The problem though with that is if you need to read the disc on a system which doesn't have a double-layer compatible drive. No can do, as they say.
It doesn't matter as to the capacity of the dvd you're reading. Any dvd player/burner can read
a double-layer dvd. You just need a double-layer dvd burner if you want to burn on to double-layer dvd's. As a matter of fact, approximately 97%+ of all dvd movies are put on double-layer dvd's, and still any dvd player can play them, and that's because they can read them. Double-layer dvd's have the capacity of 8.5GNo#1.
It's not that the equivalent is converted as to why you can't fill up the dvd's to the max, the real reason is that when you save data to any disc, computer data has to be written to the disc 1st. It puts instructions on the disc as to if it can be read by an operating system or not.
Although you don't see it, but if you use the correct softwares, you can see the actual structure of any disc, and you can see the files that are actually hidden on them, that 9 out of 10 programs will never see. And these are blank too, already with data on them.No#2.
I use CopyToDVD, DeepBurner, and a few other ones I can't think of right now. As far as a program that will compress the datsa before burning it?.... I never heard of such, and I doubt there is such a program that will do it. Your best bet is to compress it yourself, then burn it.No#3
. As far as using dvd's as data backups?.... I've never had any problems doing so, except..... whenever I would use Nero
. I don't trust Nero with my data any more. Too many of my dvd's had errors on them afterwards. Although I still have those dvd's, the data is still on them, and I've gotten all of it off of all of them, but I knew Nero was the culprit because when I started using different burner programs for my data, to this day now I don't get any read errors. So... if you ever have any problems after you burn your data, the 1st suspect should be Nero. Other than that, burning data to dvd's are fine. And they last long too. Just keep them in cases or such.
Ultimately, anyones best bet is to buy large storage hard drives, and just back everything up on them. They are more reliable than dvd's, plus you can access your data much quicker too.
Edited by Walkman, 13 February 2007 - 01:33 PM.