I was hoping I might be able to get an answer regarding DB2 and HADR.
Let me preface this by saying that I know very little about networking
and I'm not familiar with the HADR product or clustering. But, I've
been asked to research a couple issues for a client.

They are thinking about implementing HADR. They have DB2 production
databases running on more than one box.

Does a liscense for HADR need to be purchased for each production box
running DB2, or does the HADR software come standard as long as you are
running the Enterprise Edition of DB2 on each box in question?

What would be a recommended architecture for a company that currently
has multiple databases on a couple of production boxes (I know there
are a lot of variables that come into play, but I'm trying to get a
simplistic picture)? Cluster the production boxes together and cluster
the backup (or standby) boxes together? I assume DB2 and HADR have to
be available on each box (production or standby) in question.

Please don't get too technical if you respond. Any clarification would
be greatly appreciated.

Thanks for your time,

Ray