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I came home after a test, preparing for the next test. I found that I got a question wrong about storage. I usually do cloud and it’s not on my resume, but still they asked and I failed.
SANs typically utilizes Fibre Channel connectivity, while NAS solutions typically use TCP/IP networks, such as Ethernet. But the real difference is in how the data is accessed. A SAN accesses data as blocks, while a NAS accesses data as files. Storage architects will choose one over the other based on the type of data being stored and which architecture will provide the highest level of performance. Users may find published comparisons of FC and Ethernet performance data confusing as vendors have long argue
Source: SAN Versus NAS: What’s the Difference and What Do You Need? – Zadara