In my opinion you CAN'T do a weekly backup with a packer (of any sort)!
Give a look at the rsync documentation: it allows an incremental backup 
sending only the changed portion of a file!
There are many solutions for both linux and windows.
Take also a look at freenas http://www.freenas.org it's  a powerfull but 
simple storage server.
I use freenas and rsync to backup daily my data archive (over 100GB) 
while working and without losing performance!
        Nic


Dr Skip wrote:
> Weekly full backup, taken offline and stored, with daily incrementals, 
> would be a good goal. I'll probably never be able to get to keeping full 
> backups on a yearly or monthly schedule in a mountain somewhere... ;)
>
> Nicola Perotto wrote:
>   
>> I dont understand, you need:
>> - one time backup
>> - a scheduled backup
>> ???
>>   
>>
>>     

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