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[{"key": "dc.contributor.advisor", "value": "Clements, Kati", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "J\u00e4\u00e4skel\u00e4inen, Lauri", "language": "", "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2023-02-01T06:57:28Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2023-02-01T06:57:28Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2023", "language": "", "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/85268", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Palvelinkeskukset ovat kriittisi\u00e4 infrastruktuureita verkkopohjaisille palveluille ja niiden tarpeen ennustetaan kasvavan entisest\u00e4\u00e4n tulevaisuudessa esimerkiksi pilvipalveluiden suosion lis\u00e4\u00e4ntyess\u00e4. Palvelinkeskukset kuluttavat paljon energiaa ja energiankulutus on yksi keskuksien suurimmista kuluerist\u00e4. Energiatehokkuuden parantaminen on palveluntarjoajille edullista kulujen v\u00e4hentyess\u00e4 ja ymp\u00e4rist\u00f6yst\u00e4v\u00e4llisyyden vuoksi. T\u00e4ss\u00e4 tutkielmassa tarkastellaan kirjallisuuskatsauksen muodossa kirjallisuudesta l\u00f6ytyvi\u00e4 ohjelmistoratkaisuita ja menetelmi\u00e4, joilla voidaan v\u00e4hent\u00e4\u00e4 palvelinkeskusten energiankulutusta. T\u00e4rkeimmiksi menetelmiksi tunnistetaan virtuaalikoneiden sijoittaminen ja ty\u00f6kuorman tasapainottaminen. Fyysisten palvelimien resurssit jaetaan palvelinkeskuksissa usein sovelluksia ajavien virtuaalikoneiden kesken. Virtuaalikoneiden oikeanlaisella sijoittamisella voidaan maksimoida is\u00e4nt\u00e4koneen resurssienk\u00e4ytt\u00f6 ja fyysisten koneiden lepoaika ja s\u00e4\u00e4st\u00e4\u00e4 energiankulutuksessa. Ty\u00f6kuorman tasapainottamisella voidaan jakaa palvelinkeskukselle tuleva ty\u00f6kuorma tehokkaasti virtuaalikoneiden v\u00e4lille v\u00e4ltt\u00e4en is\u00e4nt\u00e4koneiden ylikuormitus tai alikuormitus. Tarvittaessa virtuaalikoneita siirret\u00e4\u00e4n fyysisten koneiden v\u00e4lill\u00e4. Virtuaalikoneiden sijoittamiseen ja ty\u00f6kuorman tasapainottamiseen on kehitetty useita menetelmi\u00e4, joilla toteuttaa toiminnallisuudet mahdollisimman tehokkaasti.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Data center are critical infrastructures for internet-based services and the need for data centers is predicted to increase in the future for the rise of cloud ser-vices and other similar technologies popularity. Data centers use lots of energy and energy usage is one of the greatest expenses for data centers. The improvement of data centers energy efficiency is beneficial to service providers for the decrease in the data center\u2019s running expenses and for the environmental benefits. This thesis is a literature review which studies software solutions presented in literature that can reduce the energy usage of a data center. The most prominent solutions presented in literature are virtual machine placement and load balancing. The resources of physical servers are shared between virtual machines that run applications. With efficient placement of the virtual machines the resource usage of the host machine and the sleep time of the physical machines, can be maximized and savings achieved in energy usage. Load balancing methods distribute the data center\u2019s workload efficiently between the virtual machines to avoid overloading or underloading the physical machines. If needed the virtual machines can me migrated between the physical machines. There have been numerous methods developed to place virtual machines and to execute load balancing efficiently in data centers.", "language": "en", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by Paivi Vuorio (paelvuor@jyu.fi) on 2023-02-01T06:57:28Z\nNo. of bitstreams: 0", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2023-02-01T06:57:28Z (GMT). No. of bitstreams: 0\n Previous issue date: 2023", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "33", "language": "", "element": "format", "qualifier": "extent", "schema": "dc"}, {"key": "dc.language.iso", "value": "fin", "language": null, "element": "language", "qualifier": "iso", "schema": "dc"}, {"key": "dc.rights", "value": "In Copyright", "language": "en", "element": "rights", "qualifier": null, "schema": "dc"}, {"key": "dc.subject.other", "value": "virtualisaatio", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "Palvelinkeskusten energiatehokkuuden parantaminen ohjelmistoratkaisuilla", "language": "", "element": "title", "qualifier": null, "schema": "dc"}, {"key": "dc.type", "value": "bachelor thesis", "language": null, "element": "type", "qualifier": null, "schema": "dc"}, {"key": "dc.identifier.urn", "value": "URN:NBN:fi:jyu-202302011551", "language": "", "element": "identifier", "qualifier": "urn", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Bachelor's thesis", "language": "en", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Kandidaatinty\u00f6", "language": "fi", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Informaatioteknologian tiedekunta", "language": "fi", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Faculty of Information Technology", "language": "en", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Informaatioteknologia", "language": "fi", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Information Technology", "language": "en", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "Jyv\u00e4skyl\u00e4n yliopisto", "language": "fi", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "University of Jyv\u00e4skyl\u00e4", "language": "en", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Tietoj\u00e4rjestelm\u00e4tiede", "language": "fi", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Information Systems Science", "language": "en", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "yvv.contractresearch.funding", "value": "0", "language": "", "element": "contractresearch", "qualifier": "funding", "schema": "yvv"}, {"key": "dc.type.coar", "value": "http://purl.org/coar/resource_type/c_7a1f", "language": null, "element": "type", "qualifier": "coar", "schema": "dc"}, {"key": "dc.rights.accesslevel", "value": "openAccess", "language": null, "element": "rights", "qualifier": "accesslevel", "schema": "dc"}, {"key": "dc.type.publication", "value": "bachelorThesis", "language": null, "element": "type", "qualifier": "publication", "schema": "dc"}, {"key": "dc.subject.oppiainekoodi", "value": "601", "language": "", "element": "subject", "qualifier": "oppiainekoodi", "schema": "dc"}, {"key": "dc.subject.yso", "value": "energiankulutus (energiateknologia)", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "energiatehokkuus", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "palvelinkeskukset", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.rights.url", "value": "https://rightsstatements.org/page/InC/1.0/", "language": null, "element": "rights", "qualifier": "url", "schema": "dc"}]
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