[DRBD-user] Adding additional 'node' to DRBD

Roland Kammerer roland.kammerer at linbit.com
Wed Jan 30 17:48:50 CET 2019

On Wed, Jan 30, 2019 at 07:49:39AM -0800, Paul O'Rorke wrote:
> Thanks Roland,
> I am not sure if I should start a new topic for this, but now you have me
> wondering....
> I use a classic 3 node setup, LVM backing devices, and a stacked third node
> for DR using Protocol A.  I have a VPN between the main site and off-site
> and the latency hovers around 10ms.
> Are there compelling reasons for me to look into DRBD 9?  My current setup
> is pretty solid, so far I have never needed to use the off site copies
> (touch wood).  I have 12 resources (all KVM HA servers) piped through the
> VPN.

When your setup is more or less static and you have 2 nodes (or 3 with
stacking + proxy), using DRBD8.4 is IMO perfectly fine.

Not every setup is OpenStack/OpenNebula/... with > 1000 resources.

Regards, rck

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