Page 696 - Cloud computing: From paradigm to operation

3 XaaS

8.3.4.3 CCS policy management

The CCS policy management functional component provides capabilities for defining, storing and retrieving
policies (e.g., quotas) that apply to virtual resources for cloud compute and storage. Policies can include
technical and security policies that apply to these virtual resources and their usage by their users.

8.3.4.4 CCS service level management
The CCS service level management functional component provides capabilities for managing the service
levels of virtual resources for cloud compute and storage, aiming to ensure that each virtual resource meets
the negotiated service level requirements.
The CCS service level management functional component manages the capacity and performance relating to
virtual resources for cloud compute and storage. This can involve the application of policies (e.g., a placement
deployment rule which aims to avoid single points of failure).
The CCS service level management functional component obtains monitoring information from the CCS
monitoring and reporting functional component in order to measure and record KPIs for the virtual resources.
Capacity of virtual resources is allocated or de-allocated based on the basis of these KPIs.
The CCS service level management functional component also keeps track of the overall state of allocated
and available resources for cloud compute and storage. The comparison of allocated capacity against
performance KPIs can assist in the identification of current or potential bottlenecks, in support of capacity
planning. This includes the management of the virtual resources capacity (e.g., density of virtual resources
to physical resources), and the forwarding of information related to infrastructure resources capacity and
usage reporting.
8.3.4.5 CCS incident and problem management

The CCS incident and problem management functional component provides capabilities for capturing
incident or problem reports related to virtual resources for CCS and managing those reports through to
resolution.

8.3.4.6 Virtualization management
The virtualization management functional component provides the capabilities for managing the
virtualization of the resources for CCS (e.g., realized by means of hypervisors).
8.3.4.7 CCS virtual resource inventory
The CCS virtual resource inventory functional component keeps track of the allocation of virtual resources
for CCS to physical resources (e.g., server pool).

8.3.4.8 Software image management
The software image management functional component manages software images (e.g., network functions)
as requested by other OSS functional components (e.g., OSS for network functions). These requests include
operations on images such as add, delete, update, query and perform rollback. Once validated by the
software image management functional component, software images are stored in a software image
repository.
8.3.5 OSS-NC 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-NC functional components encompass the set of operational related management capabilities that
are required in order to manage and control the network connectivity in NaaS CSP domains, also called NaaS
CSP connectivity domains. See clause 7.8.4 for a description of the OSS-NC functionalities.

The OSS-NC functional components may be able to manage network connectivity across one or multiple NaaS
CSP's domains (e.g., access, backhaul or core NaaS CSP domains) and can also manage network connectivity
at one or multiple technology layers (e.g., overlay, IP, multiprotocol label switching (MPLS), optical transport
network (OTN)).

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