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Conclusion
This chapter highlighted the value proposition of each of the technical solutions previously introduced in Chapter 2. This chapter also introduced the concept of oversubscription, the differences between a redundant and a resilient architecture, and the advantages and disadvantages of the two main SAN topologies in use today (core and core-edge).This chapter also covered the "request-for-x" process, functional roles, service offerings, and the differences between support models (virtual, dedicated, and outsourced).Although it is up to the decision makers in your organization to determine the usefulness and appropriateness of each solution and its fit in your storage support model, the data provided here should assist you in the decision making process. The ability to choose the right vendor and the right solution is the product of having the appropriate knowledge. This chapter illustrates that, as the storage vision matures, the vision enablers, particularly the technology and the people, become increasingly critical.Chapter 5, "Maximizing Storage Investments," outlines what should happen after the migration, how to maintain service levels, and how to keep the TCO low across your environment. Ultimately, the question to be addressed is how to get the best performance and financial return from your investment in storage networking technologies. Fine-tuning the TCO is challenging, but the process is simplified by instituting storage strategies such as consolidation and recovery, and, as products and processes mature, by implementing an information lifecycle management framework.
