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15  Cloud Computing – Data Confidentiality and Interoperability Challenges

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Fig. 15.1Example of the REST-based API

Currently, the OCCI group is finalizing and documenting the initial draft specification. The group is actively collaborating with other groups from the Storage Networking Industry Association (SNIA) for storage, and Distributed Management Task Force (DMTF) for management standards. The work is also featured on the http://www. cloud-standards.org wiki, where Cloud-related standards are coordinated by the major Standards Development Organizations (SDOs).

15.1.7.2  Cloud Data Management Interface (CDMI)

The Storage Networking Industry Association™ has created a technical work group to address the need for a cloud storage standard. The new Cloud Data Management Interface (CDMI) is meant to enable interoperable cloud storage and data management. In CDMI, the underlying storage space exposed by the abovementioned interfaces is abstracted using the notion of a container. A container is not only a useful abstraction for storage space, but also serves as a grouping of the data stored in it, and a point of control for applying data services in the aggregate.

15.1.7.3  How it Works

The cloud computing infrastructure management, shown earlier supports both OCCI and CDMI interfaces. To achieve interoperability, CDMI provides a type of export that contains information obtained via the OCCI interface. In addition, OCCI provides a type of storage that corresponds to exported CDMI containers. OCCI and CDMI can achieve interoperability initiating storage export configurations from either OCCI or CDMI interfaces as starting points. Although the outcome is the same, there are differences between the procedures using CDMI’s interface over the OCCI’s as a starting point.

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