With the appropriate 16x medias, it only took 5 minutes and 20 seconds to burn 4.4GB of data in 16x. With certain brands of medias, the DVR-109 can burn in CAV mode. Here's what it looks like (using X Resource Graph):
As you can see, the speed and throughput linearly increase to reach 16x. The unit starts to write at 6x and ends up at 16x towards the outer edge of the media.
However on most medias, and therefore for speeds of up to 12x, the burner is running in Z-CLV mode, which looks like this :
The burner starts at 6x, pauses then continues at 8x, and after a longer pause, finally reaches 12x. This technique and speed will add 1 minute 8 seconds to the burning process, and when looking at the disc directly, one can clearly see where the drive gears up to higher speeds.
In all cases, the burnt medias were readable on all players, be it in a computer or old standalone units.
PS: We are looking for someone capable of writing a throughput monitoring program that would plot the burning speed, à la Nero on PC.
