As you will see later, each snapshot contains several tables, each with different information about that type of data.

您将会看到，每一个快照都包含若干个表格，每一个表格都有关于数据类型的不同信息。

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Each snapshot stores a different type of data.

每一个快照都存储了不同类型的数据。

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The second type allocates space out of the original file system, this is known as an internal snapshot.

第二种类型从原始文件系统分配出空间，这种快照称为内部快照。

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