AIX

No, didn't use any protection caps.
I'm going out tomorrow, so, will definitely try different PCI slots, and clean out any dust in the optical connectors.
Will let you know guys know how it goes.

Thanks

---------- Post updated at 10:05 PM ---------- Previous update was at 12:51 AM ----------

I have ran out of ideas. I went out today, did the SAN Zone support option, and re-inserted the fibre cables on switch and used different ports, and the WWN's didn't come online. I did another wrap plug test of the FC adapters (that have issues) and report came back with No trouble found.
Just going replace the fibre cards and see what happens.

Update: The fibre adapters were perfectly fine ( as suspected ). SAN team moved fibre cables from the original SAN switch it was currently in, into another SAN switch and the luns appeared.
Funnily enough, when we moved one fibre path onto the other SAN switch, the other fibre cables plugged into the original SAN switch brought the luns online. Weird.

Thanks for all the input and help.

First off, many thanks for this follow-up. Getting to know how a problem finally was solved enlarges the knowledge of us all.

I hate to say it, but this sounds suspiciously like a zoning problem. Anyway, i am glad you could resolve it.

bakunin