[DRBD-user] Recommendation on shared storage

Lars Ellenberg lars.ellenberg at linbit.com
Fri Mar 20 10:40:50 CET 2009

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

On Thu, Mar 19, 2009 at 12:55:14PM -0500, Jose Perez wrote:
> any idea? :(

those questions are not easily answered in a few lines,
unless "it depends" counts as an answer.

your best bet is to hire a consultant.

> On Tue, Mar 17, 2009 at 4:35 PM, Jose Perez <jvoorhees1 at gmail.com> wrote:
> > hi people:
> >
> > I pretend to build a HA cluster using Heartbeat with 2 nodes
> > (Active/Standby). These nodes are just compatible computers (PCs), so
> > they don't have any IPMI, RSA, APC or similar features to use stonith.
> >
> > I'm thinking about using DRBD to replicate information between both
> > nodes so I would like someone with more experience than me give me
> > some advices to achieve a reliable setup.
> >
> > - If I won't be able to use stonith to kill the other node in split
> > brain situation... Does my information will be at risk?
> > - If I use a dual-primary DRBD configuration... Is it possible that
> > data loss occurs in split brain situations? Do I need to use GFS/OCFS
> > in this scenario? How reliable is this for production use=
> > - What would be that appropiate shared storage configuration for my HA
> > Cluster? I have seen some posts talking about DRBD+NFS or DRBD+iSCSI..
> > How reliable are the alternatives that I have?
> >
> > I'm trying to make the right choice of technologies for my cluster
> > scenario so I would appreciate some advices. Please consider my ONLY
> > TWO PCs available (both nodes), or maybe suggest me a better scenario
> > (maybe a third PC or something else) so I can evaluate the better
> > choice.

: Lars Ellenberg                
: LINBIT HA-Solutions GmbH
: DRBD®/HA support and consulting    http://www.linbit.com

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