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应该不是HP交换机专用的,只是HP的一种说法而已。根据三个要素来选择站点间链路:距离,RPO和带宽峰值负载。
以下文字出自:HP P6000 Continuous Access Implementation Guide
Choosing the intersite link
The location of the remote site determines the intersite link technologies that meet your
distance and performance requirements. Including distance, the following factors affect bandwidth:
• “Distance” (page 17)—The transmission distance supported by specific link technologies
• “Recovery point objective” (page 1—The acceptable difference between local and remote
copies of data
• “Bandwidth capacity and peak loads” (page 1—The effect of application peak loads on
bandwidth
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