Fundamental Concepts in Storage Interconnects
Just because a Fibre Channel network connects systems to storage, there is no reason why Fibre Channel has to be used inside a SAN storage subsystem. There are many ways to mix external and internal networks and buses, as we will explore in this chapter. Obviously, a NAS or iSCSI subsystem that connects to an Ethernet network needs to use something other than Ethernet as an interconnect, because Ethernet is not used (yet) on storage devices.
From a technical analysis, the interconnect technology for a storage device is independent of most of the other components inside a device. For example, the internal storage controllers and caching technology of a SCSI drive are likely to be specifically developed ...
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