The current set of five are rack mounted in a co-location data centre, where I pay a monthly fee for space, electricity and bandwidth.

现在使用的一套五台设备是一起安装在架子上并放置在一个托管的数据中心里，每个月我都得付给这个中心占地费、电费、带宽费。

youdao

For investment banks, the data centers can provide co-location of their algo engines next to exchanges to reduce latency in high frequency trading.

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The markets charge traders now for all matters of things: co-location, faster data feeds, trades that are actually executed.

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These were the direct ancestors of the "co-location" and "direct data feeds" that have enabled high-frequency traders to get first crack at market prices on today's stock exchanges.

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