So here is the scenario:

I recently built a SQL 2016 Failover Cluster with multiple NICs and one NIC dedicated for Backup. I went through Symantec Netbackup documentation available here which indicated that I had to create a virtual name referencing my Backup LANs IP Address to get the backup configuration to work. (this is a paraphrase). I did all that, update the host files on the client, master and media servers but kept getting this error in the log files in the path C:\Program Files\Veritas\NetBackup\logs\bpcd

bpcd valid_server: mastersvr-01 is not a master server
bpcd valid_server: mastersvr-01 is not a media server either




process_requests: Server access denied


Checking a few solutions on indicated that the master server name as resolved by the client was not matching the name configured in Windows Registry. It turns out the order I had entered the master and media server names in the host file actually mattered. I switch from A to B to get it to work:


A.      mastersvr-01

yyy.yyy.yyy.yyy      mediasvr-01

B.   mastersvr-01

yyy.yyy.yyy.yyy     mediasvr-01


Important to note is the fact that this is the default order in the Netbackup Appliance in version 7.7:

IP Address , FQDN, Short Host Name.