Before you configure a cluster in a secure mode, make sure to meet the requirements for automatic or semiautomatic mode of configuration. You can also enable Symantec Product Authentication Service later.
See Symantec Product Authentication Service
To configure the cluster in secure mode
Would you like to configure VCS to use Symantec Security
Services? [y,n,q] (n) y
y
.
n
.
Select the Security option you would like to perform [1-3,q,?]
Based on the mode of configuration you want to use, enter one of the following: