Host name rules
NetBackup uses host names to identify, communicate with, and initiate processes on NetBackup client and server computers. The correct use of host names during configuration is essential to the proper operation of NetBackup.
On Windows:
NetBackup uses TCP/IP host names to connect to NetBackup servers and clients. NetBackup validates its connections by performing a reverse host name lookup. That is, NetBackup determines the IP address of a connection and then uses the IP address to look up the host name with gethostbyaddr(). The host name and address resolution must be set up correctly in DNS, WINS, or the local %Systemroot%\system32\drivers\etc\hosts file (if necessary).
Note:
Place the system host name and IP address in the %Systemroot%\system32\drivers\etc\hosts file to accelerate name lookups.
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