Unified CVP Upgrade Strategies
You can upgrade Unified CVP in a maintenance window. However, when there are a large number of CVP servers to upgrade, it may not be possible to upgrade all of them in one maintenance window. Using the upgrade strategies, you can help large Unified CVP deployments distribute the upgrade process. In addition, you can divide the server upgrades into multiple steps that can be completed over several maintenance windows.
Unified CVP upgrade strategies are described in the following sections.
CVP Units
A CVP unit is a single virtual machine and may comprise VXML Servers and Call Servers. You can upgrade one CVP unit at a time for the Unified CVP deployments that have multiple CVP units. For example, you can upgrade a CVP unit of related servers in a maintenance window. This deployment may be useful for call centers. There may be a need to migrate to Session Initiation Protocol (SIP) to continue call processing and minimize the risks.
Multiphased Approach
Multiphased approach is a strategy to upgrade a subset of Unified CVP Servers and resume call processing. Using the multiphased upgrade approach, you can divide the upgrades in phases over time. If a Unified CVP deployment has multiple CVP units, you can upgrade each unit using the multiphased approach.
Depending on the deployment, choose one of the following multiphased approaches:
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Upgrade all servers of a certain type in a maintenance window.
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Upgrade a subset of a server type in a maintenance window.
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Upgrade a subset of a server type from a CVP unit in a maintenance window.
Use multiphased approach to upgrade the components in the following sequence:
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Operations Console
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Unified CVP Reporting Server
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Unified CVP Server
Note |
It is not necessary to upgrade all servers in a category in a single maintenance window; however, you must upgrade all Unified CVP components of one type before moving to the next set of components in the Unified CVP deployment or the CVP unit. |