Best of luck to ya. I have been arguing with a number of VI problems. Though I don't really think Open-E is at fault. The biggest gotcha is the IET vs SCST change. If you update your Open-E and you can't see your volumes, that's it. Otherwise I can't think of any other problems offhand. We have been having all kinds of hell with our VI system.
Oracle was no help, Experts Exchange was no help, we just gave up and are now converting to VMWare. BTW, how many servers do you need? If you need 3 or less VMware has a small business bundle that's only like $1000. That's what we're converting to now. Good stuff