Connecting storage to the cluster can be direct or through a storage area network (SAN) switch, either by fiber, copper, or a mixture of the two (see Figure 1).

可以用光纤、铜缆或结合使用二者，直接把存储器连接到集群，或者通过存储区域网络(SAN)交换机连接(请参阅图1)。

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Storage network layer: the use of multiple storage fiber optic switch to form a redundant storage network.

存储网络层：使用多台存储光纤交换机构成存储冗余网络。

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Already El Paso owns the second-largest fiber network in Houston, with connections to every central office switch operated by regional phone giant SBC Communications.

FORBES: Switch Hitter

Telephone companies have used fiber for two decades, but the network boxes that reroute and switch the signals have always been based on silicon chips and copper circuitry.

FORBES: Hooked on Photonics

Inside its network, Telseon owns or leases fiber that runs to a powerful switch at each corporate account.

FORBES: Weaving The Perfect Net