[QUOTE=GJ;2005096]Was just wondering if anyone knows how long it will take for a dvd back-up to deteriorate. 3 yrs, 5yrs, 6yrs.[/QUOTE]Where is my crystal ball again?
Seriously now, there is not answer to that question. Different makes of discs degrade at different rates; the way they have been burnt impacts the degradation rate; heat, light, humidity impact the degradation rate; storing habits and handling impact the degradation rates… there are simply too many factors!
I survey my own DVDR collection since 2005. Some of my discs seem to not deteriorate at all, I mean that after three years the scans show no significant variation, if any. Some others have died after only a couple of months (thankfully this was limited to a couple of MIDs). Many discs are somewhere between these extremes.
That is correct. There are many burners that won’t pull off correct @4X burns with 16X rated media. @8X is faaaaar safer than @4X, and most of the time gets the best out of 16X rated media whatever the burner. Sometimes the sweet spot is @6X or @12X, but I consider @8X the best bet in almost all situations. If you don’t scan your burns, stick with @8X.