Should be possible , I haven't seen a step-by-step manual but I've got the diagram.

Please try this donwload - https://rs317tl2.rapidshare.com/#!download|317l33|457229643|Solution_proposal_HA_C luster_with_VMware_ESX4_and_DSS_V6__Workshop_20.05 .2010_.pptx|236

Its a PP presentation - Solution proposal HA Cluster with VMware ESX4 and DSS V6 (Workshop 20.05.2010)

I'm sure I've got it of the Open-E website, but can't locate it now.

Feel free to drop me an email to : martin@broadberry.co.uk - I'll send the file back if the link doesn't work.