For UNIX platform, the command guide manual is at
http://seer.support.veritas.com/docs/279299.htm
For Windows platform, the commang guide manual is at
http://seer.support.veritas.com/docs/279300.htm
There's a few command that you can use, such as tpconfig -d, vmoprcmd or vmdareq.
In the GUI, you have to go to Media and Device Management, under Device Monitor.
For frozen or suspended status tapes, you have to use the command line. AFAIK, there's no GUI functionality to check that. In the command prompt, type
bpmedialist -m