random back-up in disk 磁盘冗余备份
With the files in one location, you can back up to tape, disk, or copy the contents to another machine without having to reorganize the source files.
如果文件位于同一个位置，那么您可以将其备份到磁带、磁盘，或将这些内容复制到另一台计算机，而无需对源文件进行重新组织。
No, I should definitely back-up my hard disk first.
不，我绝对应该备份下我的硬盘先。。。。
With it you can back up your disk to network locations, optical and removable media, and other hard drives.
有了它，你可以备份你的磁盘到网络、光学和可移动媒介上，或者是其他硬盘驱动器上。
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