If you're looking for something along that nature (separated daily
directories, but using rsync and keeping redundant disk usage to a
minimum), a good choice is a scripted package called Rsync Vault
Manager.  (http://freshmeat.net/search?q=rsync+vault+manager&submit=Search)
 It uses rsync as it's backend tool, but creates a logic code around
it to organize the backups.

I had it in place when I worked for Vistacare a number of years ago,
and it was absolutably the most spacdangtacular thing.  It did the
daily unique directory, but created hard links when a file did not
change between the last backup and that particular backup.  It
preserved lots of space, yet made it easy to restore from any backup.
A simple copy sufficed at any time.

--Dan Lund of John Smith in Charles Town, Virginia (now West Virginia)
December 2, 1859

On Sat, Jul 16, 2011 at 8:44 PM, betty <nicepenguin@webcanine.com> wrote:
> Thanks, your response -  was very clear. only thing i'm not sure about is
> the naming a "main back up directory".
> so does that mean that after i format it for ext4 or xfs that  i make a dir.
> called
>>
>> /media/backup_disk/MyBackups/20110716T190000/).
>
> ?
> then on subsequent back ups i name them for example
>>
>> /media/backup_disk/MyBackups/20110816T190000/).(note month change)
>
> what prevents rsync from thinking that this is a whole new dir? I guess i'm
> not clear on what a 'main backup dir' is.
>
> can i use xfs as the format if my current home dir is on ext3 or 4?
> Thanks,
> betty i
>
>
>
> On 07/16/2011 07:48 PM, Joseph Sinclair wrote:
>>
>> For backup, you can rsync to a directory named for the date under a main
>> backup directory (e.g. /media/backup_disk/MyBackups/20110716T190000/).
>> This has several advantages over using a lot of small partitions:
>>   1) Using different directories on a single partition makes it easier to
>> manage all the data (plus you don't hit the limits on the number of
>> partitions permitted on a device).
>>   2) It avoids the problem of figuring out which partition to mount for a
>> backup without mounting them all and searching through the contents.
>>   3) It makes rotation simpler (just delete anything more than X days old
>> after a backup if the disk is getting more than Y% full).
>>   4) With the right directory names (like the example above) you can find
>> the most recent backup easily as well.
>
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