Enterprise storage continues to demand higher performance to meet rising workload levels and higher reliability to push down total cost of ownership. At the same time, IT departments remain budget-constrained. Storage tiering provides an efficient approach to meeting these three, occasionally conflicting, goals. While buyers often discuss such factors as media technology (solid state drive vs. hard drive) and cost when planning their tiering strategy, interfaces tend to get less attention. The battle between SATA, PCI Express, and SAS is already raging in data centers around the world, but which is appropriate in your organization? This paper will explore the up and coming 12Gb/s SAS interface and compare it against the alternative interfaces vying for supremacy in storage today.
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