Please have a look at our webcast and videos:
http://www.open-e.com/library/webcasts-and-videos/

You can find there some informations about:
DSS V6 iSCSI-Failover and Multipath with ESXi4.1 - EN
Open-E DSS V6 MPIO with VMware ESX4 and Win 2008 - EN

Check also the following document:
http://documents.open-e.com/Open-E_D..._ESX4i_4.1.pdf