Hi nsitps1976,
Educating NetApp users is a pretty high priority, and it's one of the main use cases for the simulator so that's already covered 🙂
In terms of adding disks to the simulator: it's possible but somewhat involved. The maximum number of disks that the simulator can see is 56, and the maximum simulated disk size for Data ONTAP 8.0 is 1GB. So the answer to your specific question is that you won't be able to add 100x1GB disks. Or you'll be able to add them, but Data ONTAP won't be able to see more than 56.
I don't have time right now to write up the detailed steps, but the short version is:
1. unlock the diag user account and assign it a secure password (priv set advanced)
2. access the BSD shell
3. cd to /sim/dev
4. add /sim/bin/ to your path
5. use the makedisks command from /sim/bin to add the new disks
6. return to the Data ONTAP prompt and reboot
7. Assign all the new disks to the simulator
The precise commands are a little different for 7-Mode and Cluster-Mode, but the general flow of the process is the same.
Take care and hope that helps,
Miroslav