Cisco Cisco Unified IP Interactive Voice Response (IVR) 8.0(1) Installation Guide

Adding or removing servers, Cisco CRS products, or Cisco CRS software 
components during an upgrade.

For example, If you want to add standby servers to a Cisco CRS deployment, 
upgrade to Cisco CRS 6.0 and then implement the standby servers.

Before you upgrade Cisco CRS, review the 

 and perform the following general procedures 

that are described in that section: 

.

Check the current Cisco CRS release notes for important 
information that may not be included in this manual.

Review the upgrade notes.

If you will be deploying a standby server for high availability, 
review the guidelines for deploying high availability.

Make sure that Internet Explorer is configured for use with the 
BARS.

Verify hardware settings and network connectivity.

Obtain the general information that you will need to provide 
during the upgrade procedure.

Register your Cisco CRS 6.0 upgrade purchase and obtain your 
license files.

Make sure that you have access to the appropriate version of the 
BARS from a server that is not in the Cisco CRS cluster.

Back up Cisco CRS and Cisco Unified Communications 
Manager data.