Page 611 - Cloud computing: From paradigm to operation

XaaS 3

Table II.1 – Relationship between Clause 7 DaaS functions and
ITU-T Y.3502 reference architecture

DaaS Keywords or simple Related functional Notes
functions descriptions components (FCs)
in [ITU-T Y.3502]
(OS, disk, profile
image)
Deploying DaaS
platforms
Selecting DaaS
platform to assign
virtual desktop
Infrastructure Access I/F to infra Security systems- This FC provides capabilities for the control and
access (admin, DaaS user) Authorization and application of authorization for users to access
management Managing access security policy specific capabilities or data. This FC is somewhat
authority management related with the infrastructure access
management in that they cover authorization,
but DaaS focuses on authority for resource
access.

Monitoring Monitoring infra and Operational support In the monitoring and reporting FC, the part of
and virtual desktop systems- monitoring resources is similar to that on the
controlling Monitoring and DaaS side.
virtual reporting
desktop
resource
User account Service catalogues Business support Account management FC includes contracts,
and profile CSU account info (CSC systems- subscriptions, entitlements, and service pricing.
management type name, id) Account This FC is partially related with UAPM-F in that it
Profile (HW management covers service catalogues, CSC type, and
configuration, SW) contracted HW/SW, but this does explain all of
this function.
Virtual Analysis of resource Operational support The resources are typically organized into
desktop usage to admin systems- resource pools with key characteristics:
resource Resource allocation, Platform and • standardized hardware componentry and
allocation and releasing virtualization configuration
distribution Reallocating resources management • readily expandable through the addition of
by a DaaS user request
new hardware capacity
• automated shifting of resources as workload
needs change
• reduce and/or eliminate downtime through
movement of workloads and data between
resources
• manage resource consumption based on
goals
Operational Group policy based on Operational support Policies can include business, technical, security,
policy CSC types and user systems- privacy and certification policies that apply to
management account Service policy cloud services and their usage by cloud service
for DaaS Resource reallocation management customers.
policy
DaaS platform
allocation policy

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