A comprehensive assessment is a key element of a successful migration.

全面的评估是迁移成功的一个关键要素。

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The additional space is needed only for the migration operation. Therefore, it can be reduced, following a successful migration.

只有进行迁移操作时才需要额外的空间，因此成功完成迁移后可以减少表空间的大小。

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If there are no errors in the log, the migration is likely successful.

如果日志中没有错误，迁移应该是成功的。

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Like all IT projects, one of the keys to a successful cloud migration is minimizing the potential for costly mistakes.

FORBES: How Checklists Can Improve Cloud Security

But I have no doubt London is stronger and more successful through the encouragement of targeted migration.

ECONOMIST: Tony Blair