We installed our new Power 520 last night. First one in the State of ME! And I had things to fix in ESX.
The reason there was a problem, the HBA in the System i was moved. ESX thought I had attaches a SAN snapshot to the host, and it didn't see the original LUNS.
I had to resignatue the Storage. Go to Configuration, Advanced Settings, LVM, and change the Resignature to 1. Rescan, then change it back to 0. Now I don't know if I could have one this easier, but I didn't have many VM's, so I just removed all the unknow VM's from Inventory and added them back. It only took a few minutes.
I knew I was going to run into this, because I moved the HBA one time, a few months ago, and I had the same problem.
All in all, everything went great, now I need to find out if you can do System i Integration with a VIOS Partition.
I want to let anyone who is interested know that I started a group on LinkedIn for System i Integration with BladeCenter and System x. I'm hoping to get some people from the IBM Development team, some RedBook authors, Advanced Tech Support, etc people to join.