[ale] cdr speeds?

[aaron]

On Monday 06 May 2002 23:57, you wrote:
> To be honest I'm not sure if most writers will let you write faster
> than the rated speed of the disk, it's encoded on the disk.  But if it
> does, chances are that you will get a coaster.
>  4x disk tend to be older than say a 24x and therefore wasn't designed 
> to be written to as fast.  It takes into account to how fast the disk
> material can be heated and successfully written to.   If you burn a
> slow disk too fast it may not actually burn, but get blistered...

I have to agree with all the above. It's my understanding that there are 
a couple of different materials used for the media in various brands of 
CDR's and CDRW's. Each material has its own optimal "laser engergy" range 
for being burned, and the surface speed of the spinning disk directly 
affects that value. One can notice that status messages from various CD 
burn software tools will report on calibrating the laser energy.

My curiousity is with which CD materials will best retain their data over 
time. Most of the shelf life estimations I see stated  for writeable CD's 
is ten years.

peace
aaron

 

> On Monday 06 May 2002 11:44 pm, you wrote:
> > cd's have max speeds? what happens if you burn a cd at
> > 24x and its only 4x ? is this just a gimic to make
> > money off of?

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