存储成本是指物资存放在仓库经过一定时期后所发生的全部成本，即为保持存货而发生的成本。
所有这些节省了存储成本，在许多情况下改善了性能。
All of this results in a savings in storage costs and, in many cases, improved performance.
XML压缩—当在行中内联来节约存储成本时，在XDA对象中采用XML压缩。
XML compression - Using XML compression in the XDA object when inlined in the row provides storage savings.
此外，视频和音频记录的存储成本非常高，因为此类数据的量很大并且不能有效地压缩其体积。
In addition, video and audio feeds are extremely costly to store due to the large volumes of this type of data collected, coupled with its poor compression characteristics.
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