Red Hat CLUSTER SUITE - CONFIGURING AND MANAGING A CLUSTER 2006 Manual page 104

88 Chapter 7. Linux Virtual Server Overview
7.2. A Three Tiered LVS Configuration
Figure 7-2 shows a typical three tiered LVS cluster topology. In this example, the active
LVS router routes the requests from the Internet to the pool of real servers. Each of the real
servers then accesses a shared data source over the network.
Figure 7-2. A Three Tiered LVS Configuration
This configuration is ideal for busy FTP servers, where accessible data is stored on a cen-
tral, highly available server and accessed by each real server via an exported NFS directory
or Samba share. This topography is also recommended for websites that access a central,
highly available database for transactions. Additionally, using an active-active configu-
ration with Red Hat Cluster Manager, administrators can configure one high-availability