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Date:      Thu, 24 May 2007 14:16:30 +0700 (ICT)
From:      Olivier Nicole <on@cs.ait.ac.th>
To:        jason+lists.freebsd-questions@lixfeld.ca
Cc:        freebsd-questions@freebsd.org
Subject:   Re: Backup advice
Message-ID:  <200705240716.l4O7GUAh042454@banyan.cs.ait.ac.th>
In-Reply-To: <031D3633-5CE3-4962-961A-F879C3CF1949@lixfeld.ca> (message from Jason Lixfeld on Thu, 24 May 2007 03:10:43 -0400)
References:  <28E0DBBA-BB24-4D6B-AE65-07EB5254025C@lixfeld.ca> <23E233D0-EBD1-4779-8334-8124031CDD64@lafn.org> <C8C214C7-A11A-489E-83C1-0C81EB3564C8@lixfeld.ca> <BB43EF6A-F00C-40F0-9B8C-E4B6BF0C140D@lafn.org> <031D3633-5CE3-4962-961A-F879C3CF1949@lixfeld.ca>

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> 2 x system space would be enough for a full dump plus plenty of  
> increments, I'd say.  No?  Is there a rule of thumb?  3x?  4x?

That depends how much your file system change. If every ficle change
befor the incremental run, dump 1 will be equal to dump 2, and 2x will
be enough for just dump0 and dump 1.

There is no rule.

Olivier



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