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Service Level Agreement: Tier 4
The following diagram depicts the Disaster Recovery and High
Availability scenario for a Tier 4 service agreement level(SLA), as
automated deployment. Under this scenario, two(2) nodes are created in
an HACMP cluster within a single datacenter.
In this scenario, a two(2) node one-way cascading HACMP cluster is
running in the production datacenter. The business functions normally
run on a single node in the cluster, with a hot-standby node providing
high availability fail-over capabilities. In the event of a hardware
failure, the business functions are failed-over to the hot-standby node.
In the event of a disaster, no pre-built provisions exist.
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automated simultaneous deployment of multiple systems for providing
business continuity, disaster recovery, high availability, and
virtualization to your customers as a consumer commodity.