Page 311 - Cloud computing: From paradigm to operation

Framework and requirements for cloud computing 1

Table I.4 – Inter-cloud use case: Guaranteed availability in the event
of a disaster or large-scale failure

Use case

High-level figure describing the
use case

Derived requirements for cloud The system is required to support:
capability – Policy negotiation including SLA management among the multiple CSPs
within a pre-established group;
– Self-activity monitoring at a CSP or mutual activity monitoring among the
CSPs in a pre-established group. If the activity disappears, the detecting CSP
should initiate the pre-configured actions;
– Discovery, reservation, use and release of cloud resources in a dynamic
manner (i.e., not relying on the pre-configuration) on other CSPs within the
federation;
– Application invocation over the reserved resources on other CSPs within the
federation;
– Alteration and reversion (i.e., switchover and switchback), in a dynamic
manner (i.e., not relying on the pre-configuration), of CSC access to any CSP
within the federation;
– Exchange of monitoring and auditing information among the multiple CSPs
within the federation;
– Exchange of authentication information about CSC (user/enterprise)
authentication status among the multiple CSPs within the federation.

I.5 Service continuity (in the case of service termination of the original CSP)
Table I.5 shows an inter-cloud use case for service continuity in the case of service termination of the original
CSP.

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