Posted by Eamon Skelton on 02/05/07 14:38

On Sun, 04 Feb 2007 13:02:06 +0000, Charlie+ wrote:

> I recorded on some 16X speed DVD-R disks at x4, x8 and x16. The
> transfers were dated December 2005 and are now beginning to show faults
> ie just over one year old.

Are the faults unrecoverable errors or are the disks unreadable?

> In comparison I have slower speed x4 and x8 DVD-R recordings which are
> lasting without faults, having been kept in identical conditions. All
> these disks have been kept dark and not over heated. All these disks
> write strategy at 4X

Disks that are written at high speed usually tend to have higer rates of
corrected errors when you read them. This leaves less safety margin when
the disk is approaching the end of it's life.

I get the lowest rate of recoverable errors when I burn 16X rated DVDs at
about 8X. Burning at 16X gives slightly higher recoverable read errors. I
don't understand why, but burning at 4X often gives inferior results!

What kind of media are you using? Is it compatible with your writer? Some
writers are very fussy about media. For important backups, you should use
high quality media like Verbatim or Taiyo Yuden. Verbatim DVD and CD-R
media has a projected lifetime of 100 years. Presumably, you can claim
your money back if it fails after 99 years.

> Has anyone else noticed this propensity for rated high speed DVD-R disks
> to age earlier than others? I notice they use a paler dye and I wonder
> if there is a trade-off between speed and longevity? Real info. rather
> than guesses would be interesting..! Charlie+

I only bought my 16X writer about 6 months ago. All my old backups were
written with my old 4X Liteon. So far, the 16X media is lasting well. I
will be very disappointed if it doesn't last more than a few years.

E.S.




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