Page 270 - Cloud computing: From paradigm to operation

1 Framework and requirements for cloud computing

7.2.6 Dynamic migration of virtual machine

The dynamic migration of a virtual machine is designed to provide service continuity and reliability
dynamically.

The dynamic migration of virtual machine requirements include:
• It is required that the network configuration of migrated virtual machines remain unchanged after
migration.
• It is recommended that cloud service providers (CSPs) support the dynamic migration of a virtual
machine.

7.2.7 Static migration of virtual machine
The static migration of a virtual machine means moving the virtual machine between different physical
machines which results in the operating system rebooting.
The static migration of a virtual machine requirement includes:
• It is required that CSPs support static migration.

7.2.8 Management automation
The management system may perform operations such as starting or stopping a virtual machine, rebooting
a server and applying software updates automatically.
The management automation requirement with regard to virtual machines includes:

• It is recommended that CSPs automate provision, activation, deactivation and other operations over
the lifetime of virtual machines.

7.3 Software resources provisioning requirements

The software resources include the software for building cloud infrastructure resource pools and the
software in support of service implementation.

7.3.1 Automated provisioning and deployment
The automated provisioning and deployment of software resources can reduce provisioning time and the
workload for deployment.
The automated provisioning and deployment requirements include:
• It is recommended that software resources (e.g., executable files, drivers, libraries, documents,
icons, etc.) are packaged into encapsulated files, which can be provisioned and deployed
automatically.
• It is recommended that software resources be automatically provisioned and deployed to target
devices or platforms without operator intervention.

7.3.2 Unified software resource management
Unified software resource management includes capabilities for licence information registration, allocation,
recovery, expiration notification and metering.
The unified software resource management requirement includes:

• It is recommended that CSPs manage software licences in a unified manner.

7.4 Time-sensitive services requirements
Time-sensitive services (e.g., real-time communications using voice and video media) requirements include:
• It is required to prioritize resource allocation to time-sensitive processing.
• It is required to apply clock settings best practices (e.g., based on the network time protocol (NTP)
[b-IETF RFC 5905]).

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