1) What is the process of importing images and why do we import images ?
requirements to import:-
when you lost the catalog information and you still have valid images in disk or tape.
when you what to restore the images using the different master server.
see the below technotes to know how to import
http://www.symantec.com/business/support/index?page=content&id=TECH72429
http://www.symantec.com/business/support/index?page=content&id=TECH43834
2) What is the purpose of pbx_exchange ?
What is PBX?
The VERITAS Private Branch Exchange (PBX) software is part of the Infrastructure Core Services. This service provides single port access to clients outside the firewall connecting to various services running as part of NetBackup or OpsCenter. Before attempting to restart the PBX service, ensure all such dependent services
http://www.symantec.com/business/support/index?page=content&id=TECH44074
3) How would you tune NetBackup to increase backup performance?
better go with performance tuining guide
http://www.symantec.com/business/support/index?page=content&id=DOC4483
4) Basic parameters to create new policy
4W 1H
what , where, when, which , how
what you are making backup
where you are sending your backu
when you are trying to make the backup
which are the clients
how you are making backup ( full /incrmental)
policy name
storage unit name
volume pool name if tape stu
tape of schedules full or incrementals with start time and frequency
client names
backup selection( what needs to getbacku)
