I'm trying to find out if I can save the reboot... :)
Well, I think the problem is even if you could do a probe-scsi type thing, how do you know there isn't some more initialization that the Netapp needs to do on startup for proper functioning? Why risk hours of possible frustration trying to get something to work and waiting on an answer here when you could have rebooted it 20 minutes ago at 3:00AM and be done with it? :)
I think it's a fair question to ask... can you do a probe-scsi... but I think that's a different question from "What should I do to add a tape drive?"
Bruce