1. Can it scan printers
It shows printers connected to the computer, it doesn't go actively scanning ip's to seach for printers, so basically : No
2. Is there a way to limit what certain people can see? Ie. We'd live to give our Audit group access to only see production servers NOT the lab servers and environments. Can we somehow limit what they can see?
No, but if this belong to the same company you can use 1 premium license to set up 2 different lansweeper servers and databases.
3. With the premium version and the report builder - is it possible to build a report that lists all servers that have Emulex HBA's? I see the HBA's have been inventoried under Hardware>SCSI. We'd like to have a report called SAN Servers
Yes, that possible, you can create reports on all fields.