Page 934 - Cloud computing: From paradigm to operation

5 Intercloud and interoperability

The POC outlines testing criteria and procedures for documenting how hypervisor and VM solutions from
both ODCA members and non-members interoperated in real-world enterprise cloud scenarios.

5.1.11 OGF
The Open Grid Forum (OGF) is a community of users, developers, and vendors leading the global
standardization effort for distributed computing (including clusters, grids and clouds).
OGF works on OCCI that resource management interface related aspects of CCI.

The open cloud computing interface working group (OCCI-WG) of the OGF was established in 2009. The
purpose of this group is the creation of a practical solution to interface with cloud infrastructures exposed as
a service. It focuses on the creation of an API for interfacing infrastructure as a service (IaaS) cloud computing
facilities, which is sufficiently complete to allow for the creation of interoperable implementations.
The OCCI developed by OGF OCCI-WG is a set of specifications for cloud computing service providers. OCCI
has a set of implementations that act as proofs of concept. It builds upon world wide web fundamentals by
using the representational state transfer (REST) approach for interacting with services.

Figure 5-4 – OCCI's place in a provider's architecture (Reference: GFD-P-R.183
OCCI-WG Open Cloud Computing Interface – Core)

Table 5-11 – OGF documents and work items related to CCI

Reference Name/Title Status
OGF GFD.183 Open Cloud Computing Interface - Core published
OGF GFD.184 Open Cloud Computing Interface - Infrastructure published
OGF GFD.185 Open Cloud Computing Interface - RESTful HTTP Rendering published
OGF GFD.192 Web Services Agreement Specification (WS-Agreement) published
OGF GFD.193 WS-Agreement Negotiation published

5.1.12 SNIA

SNIA is a SDO, published the CDMI as an SNIA architecture (April 2010) and also moving to standardization.
SNIA is also a trade association for storage industry promoting the Cloud storage market overall and
promoting the adoption of the CDMI standard, and promoting interoperability implementations (Plugfest,
test suites, conformance programs). SNIA also produces open source software; CDMI reference
implementation is available under BSD license.

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