Maintaining maximum system uptime is increasingly critical to the success of on demand computing.

维持最长的系统正常运行时间对随需应变计算的成功来说越来越重要。

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Maintaining maximum system uptime is becoming increasingly critical to the success of on demand computing.

对随需应变计算的成功而言，维持最大限度的系统运行时间变得越来越重要。

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Listing 5 shows a very simple script that will obtain the system uptime for each of the hosts supplied on the command line.

清单5显示了一个非常简单的脚本，此脚本将获得命令行上提供的每个主机的系统正常运行时间。

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The immediate consequence here is that Amazon EC2 customers will need to deploy copies of the same server instance in multiple regions to guarantee 100% system uptime, assuming, of course, that the wildly unlikely scenario that multiple Amazon cloud computing regions experience outages at the same time never transpires.

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Officials said the overall uptime for the order-routing system is 99.96% for the year thus far.

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This means that if energy is required on a constant basis then the system needs to be backed-up by conventional sources of power 73% of the time, and there are days when the back-up system is required for more than 90% of the time (In Germany, the industry association insists that renewables uptime averages 10%).

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