Adding new EV server to existing solution...

Hi,

We are currently running Enterprise Vault 9.0.3 archiving 5000 users off our 2 Exchange 2010 mailbox servers. We have come up with the idea of adding an additional server to the EV site and moving one of the archiving tasks to the new box in order to ease the load on the original EV server.

My question is, as the users archives will be on the Vault Store of the original server, will the new server handle any of the vault cache sync requests, or would I need to move the archives to the new server's vault store for this to occur? 

Thanks.