System Capacity
The base deployment models are micro (50), small (250), medium (800) and large (2000). You can extend the system capacity of a large deployment from 2000 up to 4000 ports. You can reduce the capacity of an extended system deployment, down to the base large deployment of 2000 ports.
You can extend a Multi-data Center, in one of the following ways:
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Extend two large systems and join them to create an extra large MDC system.
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If you already have a large MDC system, you can extend both of the large systems to create an extra large MDC system.
![]() Important |
When you extend a large MDC system, or you deploy two extra large systems and join them, add the same number of extension unit to both systems. Before you extend or reduce the capacity for an MDC system, put both data centers into Maintenance Mode. |
To extend or reduce the system capacity, you add or remove up to 3 extension units. Each unit of growth consists of the following components:
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One media
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One web
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One IRP (only if public access is enabled)
![]() Note |
Each extension unit adds up to 700 more ports, up to the maximum 4000 ports for the system. When you add 3 extension units, you double the system capacity by adding 700 + 700 + 600 ports. |
The Extended Capacity feature requires a license. For more information, contact your Cisco Account Manager.