Performance and High Availability for Combined Systems

Almost every company needs to have high performance and high availability for their Web servers; however, there are many different aspects of high availability. At one time, the only avenue for achieving high availability in the UNIX realm was through fault tolerant technology. Fault tolerance relies on specialized hardware to detect a hardware fault and instantaneously switch to a redundant hardware component—whether the failed component is a processor, memory board, power supply, I/O subsystem, or storage subsystem. Although this cutover is apparently seamless and offers non-stop service, a high premium is paid in both hardware cost and performance because the redundant components do no ...

Get IBM WebSphere and Lotus Implementing Collaborative Solutions now with the O’Reilly learning platform.

O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.