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Learning OpenStack by Sunil Sarat, Alok Shrivastwa

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Working with Swift

Swift, as we already know, is the object store service that stores BLOBs and their metadata. The important part is that multiple copies of the object are stored for redundancy and resiliency. In most organizations, three copies of data are considered good from the redundancy standpoint, but we can choose to have more or fewer copies.

Naturally, more than one node should be used to store the objects. For the purpose of this book, we will just use one storage node—that we have also used for Cinder in the previous section—but this will have a third drive added to it, and use that for Swift.

Swift is a distributed system. In order to store and find data and ensure its integrity and redundancy, the architecture revolves around the ...

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