[Leaplist] burn dvd backup

[Ingo Claro]

Bryan J Smith wrote:
> Ingo Claro wrote:  
>   
>> I need to make a backup to DVD's, the backup could span
>> throu multiple dvds.  So what is the best option to do that?
>> with a command line only (it's a server).
>>     
>  
> DVDs have been pre-selected? I guess I'd be more interested
> in knowing what your recovery and retention strategy is?
> The backup is just a small part of the mechanism.
>
>   
What do you mean by "pre-selected"?
The backup is done daily to another server, the DVD backup would be 
monthly, just in case the backup and the production server goes down.

> Mondo Rescue is a commonly quoted option, which has a
> terminal user interface (TUI) as well as command line
> interface (CLI).  I also like to write my own scripts
> around
> mkisofs and afio, the latter has size/multi-volume options.
>   
have you any examples I can look at?
> The problem with multi-volume is if you lose a volume or
> a portion of the volume. That's why I advocate only using
> DVD as a "point backup" solution, and not a full recovery
> option.
>
>   
>> It would be ideal to not make all the archives to HD and
>> then burn them becouse of disk free space limitation... 
>>     
>
> Agreed, but that can be a further issue. Although you can
> stream directly to optical, it can have issues. And many
> times its still a buffered queue, so it's going on the hard
> drive anyway. In fact, if you're concerned with temporary
> hard drive usage, then you have not planned your storage
> well.  These days 25-50% of your data usage should be reserved
> for snapshots, temporary store, etc...
>
> If you really want to stream directly to a backup media,
> then consider using removable 2.5" disks instead.  You can
> get a 2x2.5" hot swap bay that fits in a 3.5" bay or a 4x2.5"
> hot swap bay that fits in a 5.25" bay.  A 3Ware 2-channel
> PCIe x1 card that will facilitate safe removal only runs about
> $100 or so.  Or you can use the kernel hotswap on regular
> SATA channels.  In either case, at sub-$0.20/GB, 2.5" SATA
> drives are very cost effective, take 25x the shock and
> off-line duration of 3.5" drives, etc...
>
>   
thanks fot the advice.


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