re: multipath
I have been working on tags since before they came out, you still have multiple CHIP pairs on the fromt end. not many single points of failure exist. if you have both path running across 1 CHIP pair (1 controller board) you can have this failure. if you have multiple paths running across multiple boards, (ficon or FC) you should be able to avoid this type of fault completely. smells of a lazy config to me