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impaginato corretto fullone_Layout 1 13/10/15 12.08 Pagina 7 Department of Engineering, ICT and Technologies for Energy and Transport Patent Title Title System for energy saving in company data centers. Consolidation od Virtual Machines in Data Centers: procedures for assignment and System for energy saving in company data centers. migration of VMs Ref. CNR 10202 Ref. CNR 10202 Assignee(s): CNR, Università della Calabria CNR Institute: ICAR Main Inventor: Carlo Mastroianni Countries: IT, EP, US, CA, UK, DE Priority date: 10/08/2011 Abstract Abstract The invention refers to a method for assigning the computational load to the different servers of a data The invention refers to a method for assigning the computational load to the different servers of a data center by means of appropriate assignment of Virtual Machines to physical servers. The invention center by means of appropriate assignment of Virtual Machines to physical servers. The invention consolidates the workload on the minimum number of servers, dynamically migrating the Virtual consolidates the workload on the minimum number of servers, dynamically migrating the Virtual Machines when needed, and puts the unloaded servers in a low power state, thus reducing energy Machines when needed, and puts the unloaded servers in a low power state, thus reducing energy consumption and carbon emissions, maintaining at the same time an appropriate service level for the consumption and carbon emissions, maintaining at the same time an appropriate service level for the clients of the data center. clients of the data center. Background Background The invention addresses the problem of the huge energy consumption in the data centers, for feeding both The invention addresses the problem of the huge energy consumption in the data centers, for feeding both servers themselves and cooling systems. It has been estimated that the consumed energy for the IT servers themselves and cooling systems. It has been estimated that the consumed energy for the IT infrastructures are equal to about 3% of the total produced electric energy. The energy consumption infrastructures are equal to about 3% of the total produced electric energy. The energy consumption impacts both on the company’s costs owning the data centers and on their clients, and has also a great impacts both on the company’s costs owning the data centers and on their clients, and has also a great environmental effect due to the CO2 emissions. environmental effect due to the CO2 emissions. Technology Technology The invention is based on an innovative bio-inspired probabilistic algorithm which consolidates the Theinvention is basedonaninnovativebio inspired probabilistic algorithm which consolidates the maximum number of virtual machines on the minimum number of physical servers in a data center, maximum number of virtual machines on the minimum number of physical servers in a data center, enabling the switch off/hibernation of those freed-up, making them dynamically available as additional enabling the switch off/hibernation of those freed up, making them dynamically available as additional capacity for incremental workloads. capacity for incremental workloads. Advantages and Applicatons Advantages and Applications The invention offers a practical solution to a problem that is difficult to solve with classical centralized and The invention offers a practical solution to a problem that is difficult to solve with classical centralized and deterministic algorithms. Advantages are crucially relevant for both business as well as technical audiences, deterministic algorithms. Advantages are crucially relevant for both business as well as technical audiences, and go far beyond energy saving alone: monitoring, capacity planning, orchestration optimization, risk and go far beyond energy saving alone: monitoring, capacity planning, orchestration optimization, risk monitoring/mitigation. The involved market is huge and growing, with no established alternative solutions. monitoring/mitigation. The involved market is huge and growing, with no established alternative solutions. Development stage Development stage The invention is the core of the software product implemented and commercialized by Eco4Cloud, a CNR The invention is the core of the software product implemented and commercialized by Eco4Cloud, a CNR spin-off based in Rende (CS). The Eco4Cloud software has been licensed to Telecom Italia for 3 years, spin off based in Rende (CS). The Eco4Cloud software has been licensed to Telecom Italia for 3 years, starting from January 2014. The product is being commercialized on the international market of data 7 starting from January 2014. The product is being commercialized on the international market of data centers, starting from UK. centers, starting from UK.