You should make a copy of the disk as a backup.

你应该将磁盘复制一个备份。

《牛津词典》

You might use this feature to remove temporary files, copy files as a simple method of backup, or perhaps even launch rsync to distribute any changes made in this most current session.

您可以使用这一特性以删除临时文件、复制文件作为一种简单备份方法、或者甚至启动rsync以便传播当前会话中所做的任何更改。

youdao

You should then copy that subdirectory to an area outside the portlet as a backup.

您然后应该将该子目录复制到portlet外部的某个区域，以进行备份。

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You cannot make a copy of a barrel of oil as a backup.

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