New To Clustering Where Do I start

[Wole Akpose]

Hello ,

I am new to clustering but I have a project that requires some intelligent
clustering.

Two (or more) machines will access the same SATA raid appliance. Machines
will serve as load balancing servers, but each reading and writing from/to
same block on storage.

Where do I start with my configuration changes and or research?

Machines are running same operating System, FreeBSD5.4, primary application
is streaming server.

Also I have another project, this time machine will run courier mta.

Thanks.