[DRBD-user] 3 Node replication

Chris Tothill Chris.Tothill at bristol.ac.uk
Thu Mar 20 10:51:51 CET 2014

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.


Since no-one else has replied...
I can't see any reason why it shouldn't work with a routed address
(provided of course that your router/firewall passes traffic on the correct
TCP ports) since it's just sending IP packets- it doesn't matter how they
make the trip, just that they do. Performance might be questionable
depending on the speed of the link. The danger of split brain would be
severe- you'd need good fencing, as everyone always says! Personally I
prefer to have the DR site have a regular snapshot of the data rather than
a live copy in case of corrupted data being written to all your copies and
then having to recover from backup, but it depends entirely on your
application.
Chris

---------------------------
Christopher Tothill
Senior IT Support Specialist
University of Bristol
---------------------------


On 18 March 2014 16:53, gerry kernan <gerry.kernan at infinityit.ie> wrote:

> Hi
>
>
>
> I hope this is not a completely dumb question, I have a 3 way replication
> cluster setup and it is running well no problems. I now wish to move the 3
> rd node to a datacentre for DR. can I use a routed address in the drbd
> resource conf file as the IP address on the 3rd node or do the addresses
> have to be on the same subnet.
>
>
>
>
>
> Best Regards,
>
>
>
> Gerry Kernan
>
> InfinityIT
>
>
>
> Suite 17 The Mall | Beacon Court | Sandyford | Dublin 18
>
> p: +35312930090 | f: +35312930137 | m: +353861709790
>
> [image: logo] <http://www.infinityit.ie/>
>
>
>
>
>
>
>
>
>
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