make multiple identical sets of backup

does anyone can tell me how to make several identical sets of backup on NT ?
If I have 3 cartridges, every time I do backup (either fullbackup or incremental) using one of them, I want to make 2 identical sets of backup on the rest 3 cartrideges.

Is it possible and easy to apply ?

I also welcome if you have better idea than I have.
Basically I don't want to rely on only one SET of backup.
Reason being, if one cartridge in set gets spoilt it will still jeopordize the 'restore' process.

thanks
daniel_swAsked:
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bigelosCommented:
If you are doing a full backup, just do the full backup three times.

If you are doing an incremental backup, make sure that the archive attributes are not being changed when you do the first two incremental backups, and then make sure they are changed when you do the last one.



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asiasoftCommented:
Could you tell me how to make the archive attribute still unchanged after running backup ?

ps. please choose 'Answer' instead of 'COmment' when answering my question, so I can grade your answer.
thanks
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bigelosCommented:
I reason I comment instead of answer is that I don't think you can leave the archive bit unchanged after backup using the built-in backup program in WinNT.  You'll probably have to use a third party backup program that will let you preserve the file attributes.  I know that Norton Desktop for Win 311 let you do this, but I don't think they have an NT backup program out there.  (www.norton.com).

You can also take a look at
http://www.yahoo.com/Business_and_Economy/Companies/Computers/Software/System_Utilities/Backup/


Although this answered your question, it is not really a solution, so feel free to reject the answer.
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asiasoftCommented:
thanks anyway for your answer bigelos.

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