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-rw-r--r--docs/requirements/105-Use_Cases.rst23
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diff --git a/docs/requirements/105-Use_Cases.rst b/docs/requirements/105-Use_Cases.rst
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@@ -5,29 +5,6 @@ Use Cases
This section describes the use cases in different system configuration
to verify the requirements of Escalator.
-System Configurations
-=====================
-
-HA configuration
-^^^^^^^^^^^^^^^^
-
-A HA configuration system is very popular in the operator's data centre.
-It is a typical product environment. It is always running 7\*24 with VNFs
-running on it to provide services to the end users.
-
-
-Non-HA configuration
-^^^^^^^^^^^^^^^^^^^^
-
-A non-HA configuration system is normally deployed for experimental or
-development usages, such as a Vagrant/VM environment.
-
-Escalator supports the upgrade system in this configuration, but it may
-not guarantee a smooth upgrade.
-
-Use cases
-=========
-
Use case #1: Smooth upgrade in a HA configuration
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
For a system with HA configuration, the operator can use Escalator to