Re: Need some information on the Cluster Manager

On Thu, 2004-02-12 at 20:44 -0800, Munir Hatmi wrote:
> Hi Lon ..thanks a million for your prompt reply. At the moment I'm
> still waiting for the midrange systems to arrive at the premises.
> Therefore Im trying to visualize the fact that before doing the actual
> thingee on the midrange systems can I run the active/active or active/
> passive configurations on 2 simple intel based pc's with their regular
> hard-drives. 

I have never tried it.

I've heard of whispers people out in the world using DRBD + Cluster
Manager to do fail-over in active/passive configuration.  This is not a
tested (nor supported) configuration, and application performance is
probably abysmal at best.  I don't have any details as to how to do it
or how well it operates.

> Mind you there's no SAN involved just simple intel based regular pc's
> talking to each other via ethernet and that it. Hope I clearified
> myself if not let me know. 

Generally, you'd want to use a SAN RAID array if you're failing over
applications - they offer better performance and better data integrity
guarantees in the event of failures (and you'd actually get the cluster
support you paid for from Red Hat...).

-- Lon

-- 
Lon Hohberger
Red Hat, Inc. --> http://www.redhat.com
My Public Key --> http://people.redhat.com/lhh/pubkey.txt