4 research outputs found

    Crucial File Selection Strategy (CFSS) for Enhanced Download Response Time in Cloud Replication Environments

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    الحوسبة السحابية هي عبارة عن منصة ضخمة لتقديم بيانات كبيرة الحجم من أجهزة متعددة وتقنيات مختلفه. هناك طلب كبير من قبل مستأجري السحابة للوصول إلى بياناتهم بشكل أسرع دون أي انقطاع. يبدل مقدمو الخدمات السحابية كل جهدهم لضمان تأمين كل البيانات الفردية وإمكانية الوصول إليها دائمًا. ومن الملاحظ بإن استراتيجية النسخ المتماثل المناسبة القادرة على اختيار البيانات الأساسية مطلوبة في بيئات النسخ السحابي كأحد الحلول. اقترحت هذه الورقة استراتيجية اختيار الملفات الحاسمة (CFSS) لمعالجة وقت الاستجابة الضعيف في بيئة النسخ المتماثل السحابي. يتم استخدام محاكي سحابة يسمى CloudSim لإجراء التجارب اللازمة ، ويتم تقديم النتائج لإثبات التحسن في أداء النسخ المتماثل. تمت مناقشة الرسوم البيانية التحليلية التي تم الحصول عليها بدقة ، وأظهرت النتائج تفوق خوارزمية CFSS المقترحة على خوارزمية أخرى موجودة مع تحسن بنسبة 10.47 ٪ في متوسط ​​وقت الاستجابة لوظائف متعددة في كل جولة.Cloud Computing is a mass platform to serve high volume data from multi-devices and numerous technologies. Cloud tenants have a high demand to access their data faster without any disruptions. Therefore, cloud providers are struggling to ensure every individual data is secured and always accessible. Hence, an appropriate replication strategy capable of selecting essential data is required in cloud replication environments as the solution. This paper proposed a Crucial File Selection Strategy (CFSS) to address poor response time in a cloud replication environment. A cloud simulator called CloudSim is used to conduct the necessary experiments, and results are presented to evidence the enhancement on replication performance. The obtained analytical graphs are discussed thoroughly, and apparently, the proposed CFSS algorithm outperformed another existing algorithm with a 10.47% improvement in average response time for multiple jobs per round

    A high availability cluster-based replica control protocol in data grid

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    Data replication is widely used to provide high data availability, and increase the performance of the distributed systems. Many replica control protocols have been proposed in distributed and grid environments that achieved both high performance and availability.However, the previously proposed protocols still require a bigger number of replicas for read and write operations which are not suitable for a large scale system such as data grid.In this paper, a new replica control protocol called Clustering based Hybrid (CBH) has been proposed for managing the data in grid environments. We analyzed the communication cost and data availability for the operations and compared CBH protocol with recently proposed replica control protocols called Dynamic Hybrid (DH) protocol and Diagonal Replication in 2D Mesh (DR2M) protocol.To evaluate CBH protocol, a simulation model was implemented using Java. Our results show that for the read operations, CBH protocol improves the performance of communication cost and data availability compared to the DH and DR2M protocols

    Quorum-based Data Replication in Grid Environment

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