[Linux-cluster] Networking guidelines for RHCS across datacenters

Fajar A. Nugraha fajar at fajar.net
Fri Jun 5 09:47:25 UTC 2009

On Fri, Jun 5, 2009 at 4:22 PM, brem belguebli<brem.belguebli at gmail.com> wrote:
> We are in the same setup, already doing "Geo-cluster" with other technos and
> we are looking at RHCS to provide us the same service level.

Usually the concepts are the same. What solution are you using? How
does it work, replication or real cluster?

> Let's consider this kind of setup, 2 datacenters far from each other by 1 ms
> delay, each hosting a SAN array, each of them connected to 2 SAN fabrics
> extended between the 2 sites.
> What reason would prevent us from building Geo-clusters without having to
> rely on a database replication mechanism, as the setup I would like to
> implement would also be used to provide NFS services that are disaster
> recovery proof.
> Obviously, such setup should rely on LVM mirroring to allow a node hosting a
> service to be able to write to both local and distant SAN LUN's.

Does LVM mirroring work with clustered LVM?


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