Sökning: "datacenters"

Visar resultat 11 - 15 av 25 avhandlingar innehållade ordet datacenters.

1. 11. Quasi-Single Mode VCSELs for Longer-Reach Optical Interconnects

   Författare :Erik Haglund; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; quasi-single mode; oxide aperture; mode filter; vertical-cavity surface-emitting laser; high-speed modulation; mode control; spectral width;

   Sammanfattning : The vertical-cavity surface-emitting laser (VCSEL) is the standard light source in optical interconnects connecting racks in supercomputers and datacenters hosting services such as online data sharing, storage and processing. VCSELs have numerous advantages such as low power consumption, fast direct modulation at low currents, circular output beam for efficient fiber coupling and low-cost fabrication. LÄS MER

3. 12. Performance anomaly detection and resolution for autonomous clouds

   Författare :Olumuyiwa Ibidunmoye; Erik Elmroth; Ewnetu Bayuh Lakew; Rolf Stadler; Umeå universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Cloud Computing; Distributed Systems; Performance Management; Anomaly Detection; Quality of Service; Performance Analytics; Machine Learning; Computer Systems; datorteknik; business data processing; administrativ databehandling; Computer Science; datalogi;

   Sammanfattning : Fundamental properties of cloud computing such as resource sharing and on-demand self-servicing is driving a growing adoption of the cloud for hosting both legacy and new application services. A consequence of this growth is that the increasing scale and complexity of the underlying cloud infrastructure as well as the fluctuating service workloads is inducing performance incidents at a higher frequency than ever before with far-reaching impact on revenue, reliability, and reputation. LÄS MER

4. 13. VCSELs for High-Speed, Long-Reach, and Wavelength-Multiplexed Optical Interconnects

   Författare :Erik Haglund; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; mode filter; high-contrast grating; oxide aperture; high-speed modulation; wavelength control; spectral width; vertical-cavity surface-emitting laser; optical interconnect; quasi-single-mode;

   Sammanfattning : The vertical-cavity surface-emitting laser (VCSEL) is the standard light source in short-reach fiber-optic links in datacenters and supercomputers. These systems use an enormous number of links, making cost and energy efficiency pressing issues. LÄS MER

5. 14. Telecom Networks Virtualization : Overcoming the Latency Challenge

   Författare :Dejene Boru Oljira; Anna Brunstrom; Karl-Johan Grinnemo; Javid Taheri; Bengt Ahlgren; Karlstads universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NFV; Telecom networks virtualization; latency; virtualization; cloud computing; network congestion; QoS; Computer Science; Datavetenskap;

   Sammanfattning : Telecom service providers are adopting a Network Functions Virtualization (NFV) based service delivery model, in response to the unprecedented traffic growth and an increasing customers demand for new high-quality network services. In NFV, telecom network functions are virtualized and run on top of commodity servers. LÄS MER

7. 15. Applying Industrial Ecology in Urban Planning for the local integration of data centers

   Författare :Cristina Ramos Caceres; Adolfo Sotoca; Marcus Sandberg; Cornelia Redeker; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Data centers; Industrial Ecology; Urban Planning; Spatial Planning; Energy Planning; Arkitektur; Architecture;

   Sammanfattning : The data center industry’s rapid development raises questions about how to regulate data center locations and expansion, becoming a matter of high concern regarding Urban Planning. Data center facilities are commonly located and scaled (regarding power and size) responding to business profitability interests steered by the global market. LÄS MER