Abstract
As described in Chap. 1, a private cloud is the deployment of cloud computing principles and capabilities on your own premises and infrastructure. This can be compared to the idea of using utility services built on your own power plant. Just as a utility consumer doesn’t care about the technology of the boilers, turbines, and generators necessary to produce electrical power, a private cloud consumer doesn’t need to care about the servers, network, and storage necessary to generate the computing power that runs the applications services they consume. Nonetheless, you should have a good understanding of the underlying technologies whether you build and operate a private power plant or a private cloud datacenter.
There are good reasons why companies prefer to keep their mission critical SAP systems and sensitive data on their own premises, but they can still benefit from the cloud concept by adopting a private one. This chapter deals with the necessary infrastructure, discusses new developments like lossless Ethernet and secure, converged networks as well as unified computing.
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mySAP Toolbag, George Anderson, Prentice Hall, ISBN 0-13-144852-8.
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See page 21 of the SAP on AWS Operations Guide v1.5 (aws.amazon.com/sap).
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The internal connections inside a CPU are isolated from each other by SiO2 layers of only a few micrometers behave like capacitors. With every clock impulse, electrons are moved to charge and discharge this capacitance, resulting in energy proportional to C × U2 flowing into the device. This flow multiplied by the clock speed is the power dissipation that results in heat dissipation.
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Every active device on the path from source to destination is counted as a “hop”.
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See SAP Note 1492000, § 1.1 and 1.2.
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© 2016 Springer-Verlag Berlin Heidelberg
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Missbach, M. et al. (2016). Private Cloud Infrastructures for SAP. In: SAP on the Cloud. Management for Professionals. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-47418-1_9
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DOI: https://doi.org/10.1007/978-3-662-47418-1_9
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