在本节中，我们将讨论如何使用IBM SONAS迁移策略来利用分级存储池迁移文件。

In this section, we discuss how the IBM SONAS migration policies are used to exploit tiered storage pool for migration of files.

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从这种债务池发生的收益被分级分类“切块块切块”，作为另一类债券，出售给投资人。

The returns on these pools were then sliced into a hierarchy of "tranches" that were sold to investors as separate classes of securities.

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