Hello Garret,

it depends on the way clients connect to the servers and to the kind of certificate you can have;

as you said that each server will have its own dns entry (and thus clients will connect to each server with its own proper name, maybe exploiting our control link mechanism) then you can use the same certificate on all the machines only if you have a wildcard cerificate, otherwise you'll need a different cerificate per each machine.

The Clustering.pdf document available in the DOCS-SDKs folder of the server distribution archive further explains all the possible combinations. (this document is not available in the Moderato edition)

HTH