I remember the days when Netware was a complete no-brainer to install…. but it’s gotten more complex over the last few years.
Have had this scenario play out several times when installing to IDE type devices/motherboards, but not SCSI.
Couple things right of the top.
You say you’re using NW6, I take it from a CD based install, are you using the base NW6 CD or have you overlayed it with the latest Support Pack. You can d/l NW6 with the latest SP overlayed from the Novell site..I would highly recommend installing from this version of media vs the base NW6 CD.
The IDECD you’re seeing is most likely for your CD drive which I assume is IDE. No worries there, you need that and can leave it as is.
There is some information at the Adaptec site, do a search under SUPPORT, 2200S, ALL CATEGORIES, and keyword “NETWARE”. Some information there that may point you in the right direction.
I took a quick look and saw 2 different sets of drivers for the same card..have you tried both?