To create a backup version of all of your data and any configuration information, follow the steps for Planning your upgrade.

按照规划您的升级上面的步骤，来创建所有数据以及配置信息的备份版本。

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Version control systems are typically used for file backup, parallel development, and change management.

版本控制系统通常用于文件备份、并行开发和变更管理。

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It is a good idea to make a backup copy and then upgrade the copy before upgrading your production version.

在升级产品版本之前，先做一个复制的备份之后再升级复制，是一个明智的做法。

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Solar panels will supply the electricity at Supercharger stations, with a 500-kilowatt-hour supersize version of its car battery as backup storage.

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