Page 695 - Cloud computing: From paradigm to operation

XaaS 3

8.3.3.8 NF inventory

The NF inventory functional component holds information of all network function instances. This information
is updated during the lifecycle of the network function instances, reflecting changes resulting from execution
of management operations on these network function instances.

8.3.4 OSS-CCS functional components
NOTE – The following description is based on an adaptation of the OSS functional components as described in
clause 9.2.5.3 of [ITU-T Y.3502].
The OSS-CCS functional components encompass the set of operational-related management capabilities that
are required in order to manage and control the virtual resources for CCS necessary for the support of
network functions instances. These virtual resources are provided in NaaS CSP's infrastructure points of
presence (PoPs) (e.g., data centres) in which network functions instances are deployed. Typical virtual
resources for compute include virtual machines (VMs) or containers. See clause 7.8.3 for a description of
OSS-CCS functionalities.

Figure 8-6 shows the OSS-CCS functional components.

Figure 8-6 – OSS-CCS functional components

8.3.4.1 CCS automation
The CCS automation functional component provides capabilities for delivering and orchestrating virtual
resources for cloud compute and storage. This includes orchestration of allocation, release, upgrade of
relevant infrastructure resources including optimizing of such resources usage, as well as managing the
association of the virtual resources to the physical resources. Provisioning of these virtual resources can be
automated in order to support scalable resource operations, including configuration.

8.3.4.2 CCS monitoring and reporting
The CCS monitoring and reporting functional component provides capabilities for:
– Reporting on the behaviour of the NaaS CSP's system, which can take the form of alerts for
behaviour which has a time-sensitive aspect (e.g., the occurrence of a fault, the completion of a
task), or it can take the form of aggregated forms of historical data (e.g., service usage data);
– Storing and retrieving monitoring and event data as logging records.
There is a need to guarantee the availability, confidentiality and integrity of the logging records held by the
CCS monitoring and reporting functional component. For multi-tenant cloud services, there is also a need to
design access to the records so that particular tenants can only gain access to information about their own
tenancy and about no other tenancy.

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