[CentOS] CentOS Server Backup Options

m.roth at 5-cent.us m.roth at 5-cent.us
Tue Mar 13 15:09:34 UTC 2012

Tilman Schmidt wrote:
> Am 13.03.2012 00:48, schrieb Nataraj:
>> I have been sucessfully using 8GB dual layer DVDs for some of my
>> backups/archiving and now that the price of Blu ray has come down I am
>> about to experiment with that.  I have been writing dump format files to
>> the DVD's and then writing an SHA256 checksum for each dump file so it's
>> very easy to verify the integrity of the dump.
>> I am also about to try daily emcrypted backups to http://rsync.net along


>> with periodic archival to blu-ray disk for one of my backup needs.
> In my experience, the long-term stability of DVDs is rather
> questionable. I've had quite a few nasty surprises with DVDs.
> Even single-layer ones regularly turn out to be unreadable
> after two or three years, and double-layer ones are worse.
> I don't know if Blueray is any better in that respect.

Yup. I've been reading about that instability for several years now: the
commercially-produced ones are ok, but not the ones you write; they will
*not* last the same number of years.


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