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Oracle Tips by Burleson
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Oracle10g Grid Computing
with RAC
Chapter 12 - RAC Design Considerations
Designing Equipment for Real Application Clusters
The most
important design feature of the equipment used in high availability
RAC clusters is a layout that eliminates any single point of failure.
For example, look at the design in Figure 13.1.
Figure 13.1:
Non-Redundant Configuration
Figure 13.1 is a typical RAC configuration. However, this
configuration, other than the RAC cluster itself, has no redundancy
and many single points of failure. Let's list the single points of
failure:
-
Firewall
-
Application
Server
-
Fabric
Switch
-
SAN array
A failure of
any one of these single points will result in system unavailability,
no matter how well the RAC cluster itself is laid out, designed, and
tuned.
For more information,
see the book
Oracle 11g
Grid and Real Application Clusters 30% off if you
buy it directly from Rampant TechPress .
Written by top Oracle
experts, this RAC book has a complete online code depot with
ready to use RAC scripts.
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