Subject: Re: FYI - An interesting method to backup your system
To: <>
From: ROC <roryoc@nc.rr.com>
List: port-hpcmips
Date: 08/22/2004 11:24:58
See how ncftp with its recursive feature fares/compares. I would be
interested to know the results.
Rory
Tim Underwood wrote:
>You can fire it up - and then just walk away. Make a pot of coffee.
>Make 2. Sleep on it. When you get up, brush your teeth slowly.
>
>Takes quite a while.
>
>One issue though with backing something up and then FTP'ing it, is the
>limited storage on the MobilePro to begin with. You've got to have room
>for that tarfile or dump before sending it on it's way. Unless you are
>just FTP'ing individual files of course. But for a full backup?????
>
>
>
>>-----Original Message-----
>>From: port-hpcmips-owner@NetBSD.org
>>[mailto:port-hpcmips-owner@NetBSD.org] On Behalf Of ROC
>>Sent: Saturday, August 21, 2004 10:25 PM
>>To: port-hpcmips@NetBSD.org
>>Subject: Re: FYI - An interesting method to backup your system
>>
>>
>>Carl Wilhelm Soderstrom wrote:
>>
>>
>>
>>>On 08/19 04:04 , Tim Underwood wrote:
>>>
>>>
>>>
>>>
>>>>cd /
>>>>tar -cvzf - * | ssh <targetsystem> -l <userid> dd of=backupfile.tgz
>>>>
>>>>One of those things that's completely logical, but I hadn't
>>>>
>>>>
>>thought of
>>
>>
>>>>before.
>>>>
>>>>
>>>>
>>>>
>>>yep. I thought it was the coolest thing in the world when someone
>>>pointed that one out to me. I usually do it slightly
>>>
>>>
>>differently (ssh
>>>from the backing-up host to the client, then tar there,
>>piping it back
>>
>>
>>>down to a local dd or tar client); but the concept is the same.
>>>
>>>for a fancier way to back up your system, which handles laptops with
>>>aplomb and gives you a nice web-based GUI for restores, I heartily
>>>recommend BackupPC (backuppc.sf.net). It just uses rsync and ssh to
>>>back up anything that can accept an rsync or ssh connection.
>>>
>>>
>>niftiest
>>
>>
>>>thing I've seen in ages; and the developer is a really great
>>>
>>>
>>& helpful
>>
>>
>>>guy.
>>>
>>>
>>>
>>>
>>>
>>The tar/ssh is good for secure copies, but, on Solaris at
>>least, I found
>>it to take about 10 times longer (probably due to all the
>>pipelining/encrypting/decrypting/network handshaking? ) than straight
>>FTP, so not a good option for lots of data (i.e. over a few
>>dozen MB or
>>so) if time is any kind of issue. And since that was on
>>100Mb Ethernet
>>with Gigabit backbone between Enterprise class UltraSPARC servers, I
>>suspect a MobilePro with 10Mb ethernet card (can't use the
>>100Mb cardbus
>>cards, right?) would be another 10 times slower or so due to the NIC
>>speed, and that does not factor in the ssh load on that
>>little ol' MIPS
>>processor at 168 Mhz compared to dual or quad 400 Mhz
>>UltraSPARC cpu's,
>>and 2-4GB of RAM...
>>
>>Anyone done any timings?
>>
>>--
>>FWIW
>>--
>>Rory O'Connor
>>
>>
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