[DRBD-user] HA NFS with more than 2 nodes.

Diego Julian Remolina diego.remolina at ibb.gatech.edu
Mon Jun 5 13:32:37 CEST 2006

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

The limiting factor here would be DRBD. You can only get support for a 3-way drbd if you get drbd 
plus from linbit (~1,870 Euros/year); this configuration is usually done for off-site disaster 
recovery (from what I have read in the list). Also notice that drbd-0.7.x only allows active/passive 
configurations, so you would have to use the new 0.8 or 8 series which is not stable yet. OTOH, if 
you have shared storage, you can use GFS or OCFS for your file system and then connect as many nodes 
as you want to the same storage system and use heartbeat 2.X.

I assume that when DRBD 8 is out you will be able to do active/active with GFS or OCFS and have two 
nodes serving at the same time. I am not sure if 3-way nodes will be part of the standard drbd 8 
series. Here is a link to their plus product:



Ashish Khurange wrote:
> Hi,
> I want to build High available NFS cluster with more than two nodes.
> Using DRBD and Heartbeat Version 2. Heartbeat V 2 allows to build HA 
> cluster of more than two nodes.
> Have anyone tried this?
> Is it possible?
> Waiting for valuable inputs and suggestion.
> Warm Regards,
> - Ashish K.
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> drbd-user mailing list
> drbd-user at lists.linbit.com
> http://lists.linbit.com/mailman/listinfo/drbd-user

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