The large number of potential approaches to introducing NAND storage in the data center are shown in the Wikibon entry “Integrating NAND technology into the data center”. This has the potential to bring confusion as technicians and vendors debate the merits of different approaches. The bottom line is that NAND is and will continue to be expensive but has the potential to improve performance for the users or maintain performance at a lower cost.
To streamline decision-making for introducing NAND devices, a total systems approach is recommended. The benefits of improved performance must be agreed with the departments paying for the applications. The cost side has to include the server, server RAM, storage subsystem, virtualization layer costs, and data management software, as well as any impact on the costs of development and operations. A cost/benefit model specific to the business applications should be developed with the ability to compare different storage hierarchy approaches and different cost assumptions.
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