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This document describes how to upgrade Cisco Unity Connection (CUC) with the use of the Cisco Unified Backup and Restore Application Suite (COBRAS) instead of the Cisco Disaster Recovery System (DRS).
When you want to upgrade your version of CUC, it might be easier to use the COBRAS in order to jump directly to the correct version instead of the need to run an upgrade or a DRS restore, which has its own requirements. A DRS restore requires that you restore to the same exact version of CUC from which the restore is taken. The COBRAS allows you to take a backup and then restore to a newer version of CUC. This can be especially useful if you change hardware or if you are in a virtual environment.
When you use the COBRAS instead of the DRS in order to upgrade the CUC, it helps to avoid the need to troubleshoot upgrade issues that might take hours to review and fix. This document describes the reasons that the COBRAS can be a better choice for a CUC upgrade or in order to move hardware. The COBRAS documentation is excellent and contains detailed information about the various processes, but it is often overlooked in regards to the upgrade path.
Complete these steps in order to back up CUC:
It is important to understand that COBRAS does not back up certain system settings, so you must ensure that you build these manually before you attempt to restore. Here is a list of the most common settings, but Cisco recommends that you reference the COBRAS documentation for a full list:
Complete these steps in order to restore your system to the new version of CUC: