I know this is likely an easy question but I can't seem to find a definitive answer.

what are the requirements to set up an archive replication server? can I use a workstation computer? do I need to have windows server edition? do I need to purchase cal's? do I kneed to have backups for the replication server? hard drive redundancy? 

honestly speaking I think I should just be able to grab a spare workstation install archive server, setup the replication schema and point some client computers to it.