By analyzing the key procedure of data backup, a model of data backup cost was put forward and the computing formula accordingly was given.

基于此，通过对网络数据备份的基本流程进行分析，提出一个基于数据量变化率函数的备份代价评估模型，并给出初步的量化公式。

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Because a complete and accurate data backup is always available, you can recover data more quickly for better compliance with SLAs and for a significantly reduced cost of downtime.

由于总是可以而进行完整而又精确的数据库备份，所以您可以更快地恢复数据，从而更好地遵守sla并显著降低停机成本。

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Because even if, say, offshore wind costs the same as natural gas by 2015 (as predicted by German utility E.ON), there is still an extra cost of building backup power for when the wind doesn't blow.

即便说近海风电成本到2015年(据德国意昂电厂的预测)会与天热气持平，但为了应付没有风的情况，还需建设备份电站，这就会产生额外成本。

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Since John is still doing his laundry during peak load hours, the utility is paying top dollar in infrastructure costs and high-cost backup power plants.

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Backup or standby generators cost an order of magnitude less than generators designed to provide primary power.

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Backup and retrieval needs would grow exponentially, which meant the cost in labor hours would kill a company if it didn't have some kind of automated backup.

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