Editing Cluster and its component Understanding (section)

=== ⁠1.8.2. Three-Tier LVS Topology ===
[https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/5/html-single/Cluster_Suite_Overview/index.html#gr-lvs-cm-CSO Figure 1.18, “Three-Tier LVS Topology”] shows a typical three-tier LVS configuration. In the example, the active LVS router routes the requests from the public network (Internet) to the second tier — real servers. Each real server then accesses a shared data source of a Red Hat cluster in the third tier over the private network. 

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[[Image:lvs-three-tier.png]]

'''Figure&nbsp;1.18.&nbsp;Three-Tier LVS Topology'''

This topology is suited well for busy FTP servers, where accessible data is stored on a central, highly available server and accessed by each real server via an exported NFS directory or Samba share. This topology is also recommended for websites that access a central, high-availability database for transactions. Additionally, using an active-active configuration with a Red Hat cluster, you can configure one high-availability cluster to serve both of these roles simultaneously.