Providing Fault Tolerance

LU pools can also provide fault-tolerant connections to users. When a particular resource such as a host connection fails, hot backup allows for a similarly configured resource to automatically fill in and support the needed functions, as shown in Figure 10.10. Hot backup can be implemented across host connections on the same server or across several servers in a domain. Hot backup is a recommended strategy for any size enterprise and helps to provide reliable host access to your users.

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Figure 10.10 Hot Backup Across Connections and Servers

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