Red Hat CLUSTER SUITE - CONFIGURING AND MANAGING A CLUSTER 2006 Manuale Utente Pagina 5

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Clustering – buzzwords
Application Failover
Detect service failures and failover to standby systems
Load Balancing
Distribute service load over multiple systems
Common for network based systems
Active/Passive
Active node owns service, passive node is idle
Failover requires “ hand-over” of resources to passive node
Advantage: generally any application
Active/Active
Multiple nodes are owning the service
Requires typically data sharing
Application needs active/active-support
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