Am I understanding your description correctly that you have 4 different SCSI control on your server?
7890 is a blad type controller
7880 is an alad type controller
2940 is an alad type controller
3210s is an ad160 type controller
For the defbootstr you need to check the documentation for each controller model. Check adaptec's website if you don't have the documentation.
You need to configure each controller so that the server sees your main controller (I assume the 3210s) as primary. This should also be covered in the documentation.
Your documentation will probably tell you to use a specific and different defbootstr for each controller. Combining multiple defbootstr's is the tricky part. You need to make sure you include both the primary hard drive and cd-rom controllers in the defbootstr or the os will not install.
For example:
Code:
Hard Drive Controller: defbootstr ahshlink=ad160
CD-Rom Controller: defbootstr link=alad
You must specify the scsi ID information in the defbootstr whenever you combine more than one. The ID fields are controller number (of that specific type, i.e first alad is 0, second is 1..., for each type start over at 0), bus number (or channel, first is 0), scsi id (based on drive or device settings), logical unit ID (usually 0).
Code:
Combined: defbootstr link="ad160 alad" Sdsk=ad160(0,0,0,0) Srom=alad(0,0,5,0)