Hey Dan,

dan wrote:
 > AOE is quite simple.

:-o ... wait, not THAT simple ... simple is something like: throw in 
coin here -> get a beer  :-)

I just think that I don't fully understand the concept of AOE and how I 
can apply your setup in order to back our server to a 3rd harddrive that 
is NOT in the same room like our server.

As far as I understand your idea, I would setup an other-machine that 
will have one harddrive/parition configured as AOE.

BackupPC-Server -> network -> other-machine -> AOE-Disk

have I understand this right - since we have lots of spare machines 
available there wouldn't be a problem setting up another one.

BUT I don't get how the backuppc-server "knows" where the AOE disk is?
sounds like magic.

If it's not to offtopic I would like to ask if you can add some more 
newbie-friendly information how this is working, maybe using the names 
backuppc-server (that wants to add the AOE-device to its RAID) and 
aoeserver (that has the real drive built in).

thanks a lot - I'm looking forward to make some testing

- Kurt

dan wrote:
> [...] on ubuntu you can build a target like this
> 
> have a spare drive/partition/lvm!
> sudo apt-get install vblade
> vblade 0 0 eth0 /dev/sdc
> 
> thats it!  now you are exporting a device on shelf 0, slot 0 (vblade 0 0)
> 
> on another machine
> sudo apt-get install aoetools
> modprobe aoe
> 
> you should now see /dev/etherd/e0.0 (this is the shelf 0, slot 0 drive 
> from the other machine)
> 
> done!
> 
> a 'client' can see any aoe device on the network, without even having an 
> IP address.  IP is not used at all on aoe.
> 
> now on the 'client' machine, you can
> "mkfs.ext3 /dev/etherd/e0.0 && mkdir /mnt/e0.0 && mount /dev/etherd/e0.0 
> /mnt/e0.0"
> 
> or better yet, add it to your raid array with mdadm.



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