Flustered by clusters? Take this free online clustering tutorial (from IBM) to learn what clusters are and also how to achieve high availability, failover, redundancy, and replication. For added measure, you'll also learn resiliency, load balancing, CSM, and resource sharing.

It's faster than reading a book! After a quick (30 seconds, tops) registration, you can get started. The tutorial should take you about a half hour to complete.

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