The cloud could serve as a secondary or, more likely, tertiary tier of storage.

云存储可以作为数据存储的第二层，或者更为可能的，将其作为第三层。

youdao

The cloud could serve as a secondary or, more likely, tertiary tier of storage.

云存储可以作为数据存储的第二层，或者更为可能的，将其作为第三层。

youdao