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Date:      15 Aug 2001 12:36:38 -0700
From:      swear@aa.net (Gary W. Swearingen)
To:        Kory Hamzeh <kory@avatar.com>, freebsd-questions@FreeBSD.ORG
Subject:   Re: Backup suggestions
Message-ID:  <md1ymdf73t.ymd@host29.207.55.120.aadsl.com>
In-Reply-To: <20010814204728.B57806@sonic.net>
References:  <20010815014124.28643.qmail@web5303.mail.yahoo.com> <005f01c1252f$8bd0eba0$14ce21c7@avatar.com> <20010814204728.B57806@sonic.net>

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> On Tue, Aug 14, 2001 at 07:11:08PM -0700, Kory Hamzeh wrote:
> > 
> > That is the best tool to use for this? tar? cpio? dump? dd?

I'd think dd would be best if you be sure to grab and save the entire
partitions and the two disks have the same heads/cyl, sects/track,
and maybe even cyls/drive (though I'm guessing the latter could be
different as long as your copied parts fit).

I haven't tried any of that, so testing would be mandatory.


BTW, you might also consider what happend to my bro.  Motherboard
went nuts and fried itself and his disk.  I'm guessing that a second
disk would have been fried as well.

For this reason, I've put my backup disk on an old 486 and send data
via NICs and a cross-over cable.  Unfortunately, FreeBSD goes belly
up during the FTP transfer and massively corrupts the OS disk (a
small one, not the backup one).  Twice.  Don't know what the problem
is.  memtest86 showed memory OK.  Probably will try NFS xfrs next.

BTW, I've been using afio with compression for several years (only
a few times per year, to tape) and use it's true-verify option 
which never complains.  Only used it for recovery once.  Using
compression, and not doing some junk partitions (like ISO images,
etc,) you can probably get multiple backups on your backup disk
which gives you a better chanch of recovering from human errors
(like when you've backed up yesterday's mistaken file changes.)
 

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