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Re: High Availability / Clustering
Oracle made orafw, multipath access to disk from two machines with firewire disks.
Save you a lot of money if you use this, together with heartbeat for your storage.
On Thu, 10 Apr 2003 21:01:58 -0400
Lee <firstname.lastname@example.org> wrote:
> >> 4) 1 Master Server Cluster using shared storage: This seems like the
> >> only viable solutions.
> > If you honestly believe this, then your definition of "high
> > availability" is
> > somewhat different from the rest of the world's. Putting a bunch of
> > front
> > ends onto a single shared data-store does not give high availability.
> > It
> > practically assures lower availability, because your shared storage is
> > now a
> > single point of failure. If it goes down, it doesn't matter how many
> > servers
> > are in your cluster, they're all hosed. This idea is pure folly. There
> > are of
> > course valid reasons for using tightly coupled server clusters with
> > shared
> > storage, but high availabilty is definitely not one of them.
> When I said shared storage, i meant two redundant SANs each cross
> connected to all the cluster boxes, which removes all single sources of