Well, it's back up now. But yesterday at 4:53 (right when we're about to leave for Christmas holidays at work), our cluser Domino iSeries 270 was unreachable. So we drove across town (funny how Domino can have a remote cluster!). My first thought was that the system was completely hosed. We still have those drives in our cluster system.
We arrived and found the system on a Main Storage Dump screen with the failing code being SRC B6000103. The system came back up great and that was the only error in the Product and Service Activity Logs. We called iSeries support and were sent a list of PTFs that should prevent this. We proceeded to load them and then IPL to apply them.
The thing that scares me is that this seems to be pretty random and it's possible that we could see this on another system.
Now Playing: "The Calling" by Aztec Jade