Novell LINUX ENTERPRISE 11 - HIGH AVAILABILITY, Manual, Page: 13 / 298

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Conceptual Overview
SUSE® Linux Enterprise High Availability Extension is an integrated suite of open
source clustering technologies that enables you to implement highly available physical
and virtual Linux clusters, and to eliminate single points of failure. It ensures the high
availability and manageability of critical network resources including data, applications,
and services. Thus, it helps you maintain business continuity, protect data integrity,
and reduce unplanned downtime for your mission-critical Linux workloads.
It ships with essential monitoring, messaging, and cluster resource management func-
tionality (supporting failover, failback, and migration (load balancing) of individually
managed cluster resources). The High Availability Extension is available as add-on to
SUSE Linux Enterprise Server 11.
1.1 Product Features
SUSE® Linux Enterprise High Availability Extension helps you ensure and manage
the availability of your network resources. The following list highlights some of the
key features:
Support for a Wide Range of Clustering Scenarios
Including active/active and active/passive (N+1, N+M, N to 1, N to M) scenarios,
as well as hybrid physical and virtual clusters (allowing virtual servers to be clus-
tered with physical servers to improve services availability and resource utilization).
Conceptual Overview 3