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Date:      Mon, 3 Jan 2005 14:27:01 -0500
From:      Garance A Drosihn <drosih@rpi.edu>
To:        Eric F Crist <ecrist@secure-computing.net>, infofarmer@mail.ru
Cc:        FreeBSD-Questions Questions <freebsd-questions@freebsd.org>
Subject:   Re: Backup with dd?
Message-ID:  <p06200703bdff4a37fda1@[128.113.24.47]>
In-Reply-To: <39A542A8-5DBA-11D9-B56F-000D9333E43C@secure-computing.net>
References:  <F3972A63-5DB0-11D9-B56F-000D9333E43C@secure-computing.net> <200501031215450764.8ED18007@mail.intradyn.com> <0956A4C4-5DB5-11D9-B56F-000D9333E43C@secure-computing.net> <41D992FF.9070204@mail.ru> <39A542A8-5DBA-11D9-B56F-000D9333E43C@secure-computing.net>

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At 1:03 PM -0600 1/3/05, Eric F Crist wrote:
>On Jan 3, 2005, at 12:46 PM, Andrew P. wrote:
>
>>Eric F Crist wrote:
>>>
>>>You seem to be under the impression that I'm doing this for the
>>>sole reason of a disk crash.  I'm actually doing it for more
>>>than just that reason.  For example, if my system gets hacked,
>>>most hackers will probably not care about an unmounted hard
>>>drive, and screw with the current mounted partitions.  [...etc...]
>>
>>Backing up with dd is ultimately straightforward, but is not a
>>good idea at all. The matter is when dd is running, the source
>>may be modified and the copy might be inconsistent. Software RAID
>>should be the best option for your task: you can mirror a drive
>>to a second one and then just plug the second one out of your
>>computer.
>>
>>Best wishes,
>>Andrew P.
>
>Is this vinum?  Fairly difficult to setup, or is it straight-forward?
>Before I delve into that, any setup recommendations?

Software raid seems like a messy way to handle this, when all he
wants is straight copies of the partitions.  Much easier to mount
and umount some destination-partition(s), than it is to unplug a
hard drive.

-- 
Garance Alistair Drosehn            =   gad@gilead.netel.rpi.edu
Senior Systems Programmer           or  gad@freebsd.org
Rensselaer Polytechnic Institute    or  drosih@rpi.edu



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