Cisco Cisco IPCC Web Option Maintenance Manual
Fault Tolerance
The system software is a fault tolerant call routing system that continues to operate without
interruption in the case of hardware, software, or communications failures. The main goals of
Unified ICM’s fault tolerant architecture are to:
interruption in the case of hardware, software, or communications failures. The main goals of
Unified ICM’s fault tolerant architecture are to:
•
Minimize time periods during which the system is non-responsive to call routing requests
(for example, while the system is being reconfigured due to a component failure or recovery).
(for example, while the system is being reconfigured due to a component failure or recovery).
•
Eliminate all single points of failure that would cause the system to stop.
•
Provide disaster protection by allowing the major system components to be geographically
separated.
separated.
Unified ICM’s fault tolerant mechanisms operate in the background and are not visible from
within Unified ICM applications. However, it is still important that you have a general
understanding of the fault tolerant architecture and the implications it has for system
administration.
within Unified ICM applications. However, it is still important that you have a general
understanding of the fault tolerant architecture and the implications it has for system
administration.
In some cases, the level of fault tolerance in the Unified ICM system can affect which
administration tasks you need to perform. For example, in duplexed database configurations
many typical database administration tasks such as database backups become unnecessary
because exact copies of the central database are kept on each side of the system on separate
computers.
administration tasks you need to perform. For example, in duplexed database configurations
many typical database administration tasks such as database backups become unnecessary
because exact copies of the central database are kept on each side of the system on separate
computers.
This chapter provides an overview of Unified ICM fault tolerance with a special emphasis on
the fault tolerance of the Central Controller and the central database.
the fault tolerance of the Central Controller and the central database.
This chapter contains the following topics:
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Administration Guide for Cisco Unified ICM/Contact Center Enterprise & Hosted Release 8.x
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Chapter 2