Some file systems do not support files larger than 2gb, so there is an option to set the maximum file size by splitting the image into multiple volume files.

一些文件系统不支持大于2g的文件，因此，可以通过将映像分解到多个卷文件，从而设置最大文件大小。

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If an operating system bug, bad disk sector, or even certain superuser errors cause corruption to a file system, using multiple volumes can limit that damage to just one volume.

如果操作系统缺陷、磁盘坏扇区或某些超级用户失误会破坏文件系统，使用多个卷可以把破坏的范围限制在一个卷。

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A single DCP may be stored in more than one medium (e.g., multiple hard disks). This file is used to identify the volume order in the series.

简单的DCP可能存储在不止一个移动介质上(比如，复合式硬盘？)。这个索引文件用于识别整个DCP里的文件顺序。

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