alexander AT nautae.eti DOT br wrote:
>> reliable because they use redundancy and are able to detect and replace
>> failed memory cells.
>> That's why I would probably trust a DVD more than solid-state.
>> Ultimately, though, all media fails. Tapes wear out, too.
> 
> I don't know about solid-state devices.
> 
> But I think if I can make a safe write on a DVD-R (comparing the  
> checksum) probably I won't have to worry about the media for one or  
> two years.
> 
> Using a disk... If something is wrong with the electronic device, my  
> read after two years can destroy everything in one single step.
> 
> Of course If I have a laser problem on DVD device... but have you ever  
> noticed about a laser problem that had destroyed an -> already <-  
> written DVD media when you just want to -> read <- data?
> 
> I think DVDs is really reliable to keep data readable (one or two  
> years, wherever), but not to write. And disks is more reliable to  
> write and not to read.
> 
> Of course what I'm saying is about a -> crash <- at the restore  
> moment, not a misunderstood byte or something.
> 
> Normally I have to scratch a DVD-R on the wall or write wrong data to  
> destroy my day at a restore moment. If I use a disk... I think it will  
> always be a stressed restore moment.
> 
> DVD-R just seems to be like a piece of paper, extremely fragile, but  
> extremely simple.
> 
> But, of course, I'm not a specialist, I don't know if a solid-state is  
> more simple than a burned piece of plastic.
> 
> I'm really enjoying this discussion. I hope I'm not insisting on a  
> redundant discussion. Sorry if it's the case.
> 
> []'s
> Alexander
> Brazil - Rio de Janeiro
>

Well, when I need a restore ( I've always my data at twice device at the same 
time )
you could always mount the disk RO so there's no chance to destroy something.

Backup disks on my place are estimated to be used 3 to 5 years ( always under 
the manuf. warranty )
I've always a double of the data written on it, and those devices are store at 
different place.
Just in case of.

I check frequently what devices has the best ration Place/Price to have the 
best price pro TB
in a sum of what I need to store following my GFS rotation.


But with 480GB per week I don't want to burn DVD :-)

-- 

     Bruno Friedmann


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