hbksabhi said:
I want to BURN HD MOVIES and Other stuff
You will have more problems with the HD movies as they are sized to completely fill the disk. When you write a drive to the max, the outer edge of the disc is where the data ends up and the disk can get scratched or lose the ability to be read from. The outer edges tend to deteriotate before the inner in short. Overburning will kill discs even faster.
If you live in an excessively humid environment make sure you store your cases in as watertight a comparment as you can find.
The other stuff you can use software that will include redundancy when you write with it, so you only use like 60% of the storage and the rest is for check files, there was an app mentioned for this here some time back whose name escapes me. I try not to exceed 4GB on a 4.7GB DVD.
If you have lots of movies also use a spare HDD or two as your backup that you can keep offline.
Learn how to quality scan your dvd-writes, if you do not have a writer that can do this then get one that can. This alone will help to halve any losses you might have in the future. It won't gurantee what you write will last forever however.
hbksabhi said:
whats the life span of data ,i mean how many years it can go uncorrupted or unharmed .........
Difficult to answer, better to have backups, then backups of those backups rather than to rely only on life span. If you go cheap in this dept you will pay for it later. Typically, the data required to fill any media is worth 100X the cost of the media itself, so plan accordingly.
logistopath said:
one copy on a DVD and another on a flash drive.
I would have said use another dvd instead, don't flash drives have issues with long term storage of data.
swastikrj said:
i have heard that if data is written on a dvd or cd at the lowest speed possible the more chances of its surviving more - is it true ?
No, it depends on how well your writer and the media it writes to get along. The only way to tell is to quality scan.