Int. J. of Cloud Computing   »   2014 Vol.3, No.2



Title: Optimising the cloud infrastructure: tool design and a case study


Authors: Chris Nero; Anindya Neogi; Venkata Ramesh Somisetty


IBM/Tivoli Systems, 3901 S. Miami Blvd., Durham, NC 27703, USA
IBM India Software Lab, ETZ, Rajiv Gandhi Infotech Park Ph 2, Pune 411057, India
IBM India Software Lab, B176, 3rd Floor, MSP1, MINDSPACE, HI-TECH City Hyderabad, AP, 500081, India


Abstract: It has been predicted in a cloud management survey, that over 68% of production workloads in the USA will be virtualised by 2013, which is almost 25% more than in 2010 (IDC Private Cloud Management Study). However, virtualisation will not deliver its full potential unless it is carefully managed to achieve the adequate consolidation density within acceptable performance risk. In this paper, we describe an interactive, what-if analysis driven, planning tool to manage and optimise virtualised/cloud environments. The analysis is performed based on usage data, discovered configuration, policies and other meta-data. The recommended optimisation plan may suggest possible savings based on various cost factors. The paper also describes a case study of how we have applied the tool in an IBM internal cloud and present some insights and learning. Based on several what-if analysis scenarios we demonstrated, 100+ more virtual machines can be accommodated in the existing cloud, resulting in improved ROI.


Keywords: cloud computing; optimisation; virtualisation; capacity planning; infrastructure as a service; IaaS; software as a service; SaaS; platform as a service; PaaS; what-if analysis; return on investment; ROI; case study; cloud infrastructure; virtual machines.


DOI: 10.1504/IJCC.2014.062273


Int. J. of Cloud Computing, 2014 Vol.3, No.2, pp.191 - 208


Available online: 03 Jun 2014



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