Change VSA password in Veritas Cluster?

Hi,

I know the following article http://www.symantec.com/business/support/index?page=content&id=TECH48035

BUT... how do I do it in a Veritas cluster mode?

I have 7 active nodes out of 15 EV servers in general...

when I change the password from the VAC - how can I make sure it being changed on all 15 servers?

Do I need to go server by server and change the services password separately?

Thanks.