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[John Sechrest]

I would suggest looking at one of two paths:

1) rdiff does incremental rsync based backups
2) unison does bi-directional syncing. 




Bob Miller <kbob at jogger-egg.com> writes:

 % B. Gallagher wrote:
 % 
 % > I do understand that the direction of technology flow seems to be into 
 % > the use of external HDD's for back-up so maybe I'm beating a dead horse 
 % > here.  I bought an External HDD shell for $25 and intend to throw a 500 
 % > GB Seagate internal in there (right now it has that noisy 30 GB Maxtor, 
 % > that I'm waiting to see die, till I get the money.)
 % > 
 % > I'm talking about softRAID and a home user.  I guess RAID 1 is a moot 
 % > point, but what about RAID 0?  Isn't there a performance  boost or is 
 % > this a lot of complexity for not much performance gain?  This is 
 % > practice, not theory, so its fair for me to ask.  What's your experience?
 % 
 % You don't want to use RAID of any stripe ( :-) ) with an external
 % drive.  You want to copy files from the main disk to the external
 % drive.  Google for "rsync backup" to get some ideas.  The seminal
 % paper on the subject is Mike Rubel's. (2nd or 3rd in Google's list)
 % 
 % There are some good turnkey backup systems based on rsync.  I don't
 % have any specific recommendations but I'm sure others do.
 % 
 % -- 
 % Bob Miller                              K<bob>
 %                                         kbob at jogger-egg.com
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-----
John Sechrest          .         Helping people use
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                          .            more effectively
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                                 .       Internet: sechrest at peak.org
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                                              . http://www.peak.org/~sechrest