=== Types of Clusters ===
There are 4 main types of clusters:
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- Storage
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- High Availability (HA)
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- Load Balancing
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- High Performance
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== High Availability ==

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== Storage ==
Allows servers to simultaniously read and write to a single shared filesystem. 
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Example Red Hat Cluster Suite (RHCS) storage cluster is GFS
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This cluster simplifies storage administration by limiting the installation and patching of applications to one filesystem.
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Eliminates the need for redundant copies of application data and simplifies backup and disaster recover.
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== Load-Balancing ==

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== Performance ==

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https://www.centos.org/docs/5/html/Cluster_Suite_Overview/s1-clstr-basics-CSO.html