Yes - see link for more details on how to set this up.

http://www.open-e.com/library/product-presentations/

Open-E Replications
2008 - Replications supported by Open-E software, March 2009

2009 - Open-E DSS Asynchronous Volume Replication over a LAN, April 2009
2009 - Open-E DSS Asynchronous Volume Replication over a WAN, April 2009
2008 - Open-E DSS Synchronous Volume Replication over a LAN, April 2009
2009 - Open-E DSS Synchronous Volume Replication over a WAN, April 2009