On 03/24/2010 08:40 PM, Thomas Mueller wrote:
> bacula-users-lists wrote:
>> Ok, you've piqued my curiosity - why would one not use disk versus
>> ¿tape? as a long term storage medium?  Do you have any sites,
>> documentation, whitepapers on the subject?  Even unsupported hunches are
>> food for thought - mind sharing?
> 
> do not have whitepapers or things like that. but:
> 
> * last month my fathers old pc got defective (motherbord, 7 years old). 
> Hey, I was little surprised, that i had no machine around with IDE 
> connectors .

Hardrives for backup are to be ok for a 3,5 years period. They need to be check 
time to time.
And if you want archiving it's never one always ware two backups on two 
different medium (Mfg,firmware version etc...)

Long term archiving is contant migration of data to new support.

> 
> * i don't know any commodity harddrives with warranty longer than 
> 5years, wheras tapes are statet to last up to 30years by manufacturers 
> (further readings: http://en.wikipedia.org/wiki/Linear_Tape_Open)

That's litterature, in a decade who can read a DAT-1 now if you don't have the 
device adapted
> 
> anyway, for long term archiving you will hit other problems like: can 
> you read your data with the software you will have in 10years or will 
> the old software still run? Your restored data will be worth nothing if 
> you can't work with it. :)
> 
> - Thomas

Hopefully we are using bacula, have the source, have a open-documented,stable 
format ! A test made some month ago, prove (with
the right device) that we can restore a 8 years bacula medium.
(was made of the beginning of the bacula project)

Anybody using Arghserve, "in disaster is Veritas", ntbackup (ooups doesn't 
exist anymore) can say the same ? :-)


-- 

     Bruno Friedmann


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