EV - Separating Journal & Mailbox archiving

I have a site with a single EV server performing both Journal and Mailbox archiving - and the load is too much for the server.  SQL is located on another server.  Both servers are Virtual - VMware.  EV is at 10.0.4, Windows is W2K8R2 and SQL is 2K8R2.

I want to split off the journal archiving to another server, thereby lightening the load on the original server.  What is the procedure to do this, regarding re-locatiion of indexes, partitions etc. ?

Thanks,

AJ