Page 223 - Cloud computing: From paradigm to operation

Framework and requirements for cloud computing 1

Table II.2 – Preparing a physical machine – use case

Figure

Pre-conditions CSP: cloud service operations manager wants to modify or expand the resources in a physical
(optional) machine.

Post-conditions A physical machine provides a cloud service.
(optional)
Derived – Hot-plug support (see clause 7.6)
requirements – Configuration of multiple processing units (see clause 7.1.5)
– Monitoring status of physical machine (see clause 7.1.4)

Table II.3 – Cold data storage resource – use case
Title Cold data storage resource use case

Description Cold data means data that is stored but almost never read again. The cloud storage service
for cold data provides almost no limit storage capacity at a very low cost and the physical
machine for cold data storage requires the highest capacity and the lowest cost. The typical
use case is a series of sequential writes, but random reads. As the physical machine is
recommended to provide as much storage capacity as possible, it would have many large-
capacity disks. To provide a highly durable storage service, the physical machine is
recommended to provide management function for the CSP to manage and monitor the
physical machine cluster and then the CSP can rebuild the data in time when some failures
happen, also the hot plug function is needed. Physical machines usually support storage of
different media to balance between cost and performance for different situations.

Roles/sub-roles CSP: cloud service operations manager

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