Upgrade Tomcat on cluster

Hello Experts,

We have recently upgraded our Test BO 4.0 to BO 4.1 SP 5 Patch 6. We faced problem with tomcat and had to open a call with SAP for the same. They helped in redeploying the existing upgraded tomcat7.

Now we have to upgrade our BO production system and which tomcat in cluster. One Tomcat on existing BO server and other tomcat on separate server.

We are not sure how to upgrade the Tomcat which on separate server during the upgrade process. and what things needs to be taken care?

Could  you please share your experience and advice us.

Thanks

Regards,

Mohit Sahu