[TriLUG] backup methodology

[Chris MacLeod]

I post this with no comment whatsoever (as an owner of a DAT-DDS3 drive 
and a believer in dump)

http://berdmann.dyndns.org/zwicky/testdump.doc.html


Elliot Peele wrote:

>You might also want to look at rdiff-backup. It uses librsync to do its
>backups. Looks to be pretty good.
>
>Elliot
>
>On Thu, Feb 20, 2003 at 07:37:59PM -0500, Mike M wrote:
>  
>
>>On Thursday 20 February 2003 17:13, Jeremy Portzer wrote:
>>    
>>
>>>On Thu, 2003-02-20 at 17:05, Jason Tower wrote:
>>>      
>>>
>>>>as long as it's only a couple of gigs, and it's only moving across the
>>>>lan, i wouldn't bother with tar/incremental backups unless space on the
>>>>backup server is really tight.  using the rsync method that jeremy linked
>>>>to earlier is probably the best bet, or just copy the files directly if
>>>>you're really lazy like me.  make a seperate directory for each day of
>>>>the week and use a cron job to copy data to the appropriate directory on
>>>>the appropriate day. that way if you need to restore a file from three
>>>>days ago you can do it in about three seconds.  if you have the space for
>>>>it save the friday directories and rotate them so you always have three
>>>>or four, that way you can go back a month or so if necessary.
>>>>        
>>>>
>>>Just to make sure people noticed -- that "rsback" script that I
>>>mentioned (based on the rsync article) does this exact thing -- takes
>>>snapshots for each day, allowing you to access previous versions.  The
>>>nice thing is that it uses hard links for files that haven't changed, so
>>>a lot of space is saved.  And since rsync is used, files that haven't
>>>changed aren't copied, saving time and network bandwidth.  It's really
>>>very easy to set up.   I'm testing this on the TriLUG backup server now.
>>>      
>>>
>>Thanks.  It's another productive day at TriLUG.
>>    
>>
>>>For even more space savings, look into "rdiff-backup" which only stores
>>>deltas (differences) between files, but it does require a special
>>>utility to recover the files.
>>>      
>>>
>>I'm usually hyperventilating by the time I realize I need a backup.  I think 
>>I'll pay the cost of increased storage room.. The rsync feature of copying 
>>only what's changed should work out very well.
>>-- 
>>Mike M.
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>  
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Chris MacLeod