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[OT] DVD-RW life time

December 14, 2006 | 7:03 pm

Hello,

I usually backup data on multiples copies of DVD-Rs. This time I got wrong and
bought some DVD-RWs because they were cheaper. Can I rely on DVD-RWs or should
I backup on DVD-Rs as usual ?

Thanks for your informations and sorry to post off topic

J


December 15, 2006 | 12:04 pm

Hi,
there was a link at slashdot recently, covering exactly that:

http://rss.slashdot.org/~r/Slashdot/slashdot/~3/59924512/article.pl

the summary was that RW’s and -R are much less reliable than +R, but there
are also details about various chemicals used.

best,
nesa


December 15, 2006 | 1:37 pm

thanks

nesa :

> Hi,
> there was a link at slashdot recently, covering exactly that:
> http://rss.slashdot.org/~r/Slashdot/slashdot/~3/59924512/article.pl
>
> the summary was that RW’s and -R are much less reliable than +R, but there
> are also details about various chemicals used.
>
> best,
> nesa
>
>


December 16, 2006 | 12:18 pm

julien breval wrote:
> I usually backup data on multiples copies of DVD-Rs. This time I got
> wrong and bought some DVD-RWs because they were cheaper. Can I rely
> on DVD-RWs or should I backup on DVD-Rs as usual ?

I never rely on DVD-Rs because its so dependent on the brand combination
between burner and DVD-R. If I verify a DVD I get about 5% failures !!!!
(Which doesn’t mean its entirely impossible to read it) But its
magnitudes worse than CD-R.
The cheapest solution (cost per GB) anyway is to use external harddrives
for BU. If you only switch them on for the backup, and recopy them if
the technology changes it seems more safe. If your really anxcious, use
a raid system, and if you’re paranoic, keep another copy at a different
place…
DVD’ s are ok for transfers though…

Stefan


Stefan Tiedje————x——-
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December 16, 2006 | 2:59 pm

thanks for your anwser Stefan

Stefan Tiedje :
> I never rely on DVD-Rs because its so dependent on the brand combination
> between burner and DVD-R. If I verify a DVD I get about 5% failures !!!!
> (Which doesn’t mean its entirely impossible to read it) But its
> magnitudes worse than CD-R.
> The cheapest solution (cost per GB) anyway is to use external harddrives
> for BU. If you only switch them on for the backup, and recopy them if
> the technology changes it seems more safe. If your really anxcious, use
> a raid system, and if you’re paranoic, keep another copy at a different
> place…
> DVD’ s are ok for transfers though…

Well, I currently use CDs and DVDs, usually in 2 or 3 copies each (a kind of
shark teeth technology).
I didn’t know the external disks were the cheapest solution. I was only thinking
that if the external disk breaks for some reason, you loose everything …


December 16, 2006 | 6:44 pm


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