Fun fact about OpenVMS 7.3-2 multipathing

Discovered this week that OpenVMS 7.3-2 apparently doesn't turn on its multipathing brain unless it has a second HBA installed, in Fabric mode (via wwidmgr), and zoned over both HBAs.  I imagine it's just a side effect of the multipathing logic pre-dating SANs with multiple paths to a single HBA, but it sure caused quite a bit of consternation when I was prepping to do SP failure testing on an EMC VNX and couldn't get paths to show.