Reliable service provisioning in converged multimedia network environment

Choi, Jung Yul; Woo, Shin Jung; Shim, Byoung Kwon

doi:10.1016/j.jnca.2010.04.002

Cited by 2 publications

(1 citation statement)

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“…When one of N working systems gets failed, the backup system can work for the failed system. This type of system connection can be modeled by M/M/1/N+1/N+1 queueing system [20,21] as shown in Fig. 4.…”

Section: Reliability Modelingmentioning

confidence: 99%

Reliability Modeling of Direct Current Power Feeding Systems for Green Data Center

Choi¹

2013

Journal of Electrical Engineering and Technology

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-Data center is an information hub and resource for information-centric society. Since data center houses hundreds to ten thousands servers, networking and communication equipment, and supporting systems energy saving is one of the hottest issues for green data center. Among several solutions for green data center this paper introduces higher voltage direct current (DC) power feeding system. Contrary to legacy alternating current (AC) power feeding system equipped with Uninterruptible Power Supply (UPS), higher voltage DC power feeding system is reported to be a more energy efficient and reliable solution for green data center thanks to less AC/DC and DC/AC conversions. Main focus of this paper is on reliability issue for reliable and continuous operation of higher voltage DC power feeding system. We present different types of configuration of the power feeding systems according to the level of reliability. We analyze the reliability of the power feeding systems based on M/M/1/N+1/N+1 queueing model. Operation of the power feeding system in case of failure is also presented.

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Section: Reliability Modelingmentioning

confidence: 99%