Each vpar, as you likely know, has to have both a boot path and a LAN, so you need to have those I/O cards unused to create the fourth vpar. So, I don't see any thing to prevent the vpar from working the way you want, however, since you have 3 cells, you might want to consider making more use of hard partitions. Not as flexible, but more isolation. Now the next question is whether or not the traffic between the cell boards would slow things down and the answer to that is probably a maybe. Moving across cells has greater latency than within a cell, but HP-UX typically interleaves memory across cells anyway, so it might not be that substantial. Best to confirm with the following documents:
http://www.docs.hp.com/hpux/onlinedocs/1705/oc.pdfhttp://docs.hp.com/hpux/11i/index.html#Virtual%20PartitionsI noticed that the i/o expander for the rp84x0 does not support boot devices in the current release, so hopefully, you have a Superdome or have all you boot i/o cards off the first two cells.
Mom 6
