[CentOS] Re: cheap DVD-RAM media?

Bryan J. Smith

b.j.smith at ieee.org
Fri Aug 5 15:28:11 UTC 2005


Peter Farrow <peter at farrows.org> wrote:
> MO = "Magneto Optical"
> http://www.usbyte.com/common/MOsystems.htm

MO, as implemented by DVD-RAM, is also called "Phase Dual"
sometimes.

Both "Phase Change" and "Phase Dual" have very high error
rates at write-time.  It is typically 10,000x worse than
typical magnetic or WORM (write-once) optical media.  I.e.,
error rates are 10^9, instead of 10^13, meaning you can
expect 5 errors for every full DVD.


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