Seite 53 - Cloud Migration Version 2012 english

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Private Cloud infrastructure.   
Private Cloud services are exclusively available resources, which are 
independent in terms of location (on‐premise/off‐premise), and more like 
traditional IT infrastructures in terms of security, legal considerations and 
availability.  
In a true private Cloud an entity’s data should be physically separated from 
all other entities data, and hosted on hardware platforms that are 
independent from all other entity’s hardware platforms.  When considering 
a Private Cloud for security and governance reasons it is important to 
understand from your Cloud provider, that either the entire hardware 
infrastructure is independent including networks and storage devices or if 
only the physical server hardware is independent.  
With a Private Cloud, the customer rents the technical equipment (IT 
components, hardware, software, etc.) in order to provide Cloud services 
using an efficient, standardised, virtualised and a secure IT environment 
modeled on Cloud design criteria. The enterprise keeps full control over 
which authorised persons/groupsuses the services in this infrastructure, in 
what way and when. In other words "Private Cloud" relates to providing 
Cloud computing services for predefined users and not to the public. 
Management and operations are handled within the organisation or by the 
Cloud provider. Services are offered on separate networks and most of the 
time connected into normally enterprise own security domain. 
Benefits of the Private Cloud model: 
Private Clouds support customisation and can compensate for the 
security and compliance drawbacks of Public Clouds 
The Private Cloud concept can allow for efficient Mobile Users and 
Bring your own Devices.  
Disadvantages of the Private Cloud model: 
The major disadvantage of a Private Cloud solution is that the costs are 
higher. Upfront costs, if deployed on‐premise, cannot be fully converted into 
operating costs because the enterprise has to purchase or establish private 
Cloud components in advance and these costs do not scale with actual use 
and load. Therefore, part of the Cloud computing benefit sought by the 
enterprise is lost. Despite this, the use of Cloud methods in a private 
environment can still offer considerable savings potential in the scope of the 
overall concept because other Cloud benefits such as self‐service,