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Reliable federation identity management and efficient user authentication using single-sign-on (SSO) are desirable aspects of InterCloud to achieve inter-operable security objectives. Trust is an important aspect which enhances reliability of federated identity management. Existing service provider-initiated or identity-provider initiated identity sharing models for SSO does not analyse the reliability...
In the light of the rapidly changing and benefits brought by cloud computing, the study is to find the critical factors that may hinder the benefits of cloud adoption, with respective measures proposed. It was found that control self-assessment (CSA) can enhance the IS security and improve business value delivery. A research model between CSA, cloud security (CS) and cloud-related business performance...
Due to the elasticity of cloud systems, many researchers have developed ideas to fabricate applications to provide cloud based online education. As cloud systems offer on-demand services, broad network access and resource pooling, the teaching to the students has migrated from classrooms to online cloud systems. Resource provisioning means to provide resources as per the requirement of the application...
As Solid State Drives(SSDs) have becomemore cost effective, they are widely used from embeddeddevices to enterprise storage systems. However, they have typical problem called write amplificationwhich is caused by out-of-place updates characteristicsof NAND flash memories. As the write amplificationincreases, it degrades I/O performance andreduces lifetime of SSDs. When using SSDs in a paritybased...
Selecting the right cloud service provider is crucial to minimize the downtime/outage risk and prevent Service Level Agreement (SLA) violation. The main purpose of this paper is to introduce a framework to identify and control the associated risks using requirements, priorities, service level parameters, and cost in order to identify eligible cloud providers. The methodology uses Value at Risk (VaR)...
HDFS has been widely used for storing massive scale data which is vulnerable to site disaster. The file system backup is an important strategy for data retention. In this paper, we present an efficient, easy- to-use Backup and Disaster Recovery System for HDFS. The system includes a client based on HDFS with additional feature of remote backup, and a remote server with a HDFS cluster to keep the backup...
The expanding applications of cloud computing has urged the researchers with strong requirements for developing trust management models. It is essential to create trust management system that is adoptable for improving the privacy of the consumers, enabling the service availability, providing security to both cloud service providers and consumers of cloud services. Due to the dynamic cloud environment...
In recent years, trust has emerged with the development of cloud computing. It is a critical step to select a trusted cloud provider before the service begins, which is related to the interests of cloud consumers themselves and the quality of the service. A SLA trust model based on behavior evaluation is proposed in this paper. User's subjective evaluations are abandoned, the provider who is trusted...
Distributed communities of researchers rely increasingly on valuable, proprietary, or sensitive datasets. Given the growth of such data, especially in fields new to data-driven research like the social sciences and humanities, coupled with what are often strict and complex data-use agreements, many research communities now require methods that allow secure, scalable and cost-effective storage and...
Multi-cloud systems have been gaining popularity due to the several benefits of the multi-cloud infrastructure such as lower level of vendor lock-in and minimize the risk of widespread data loss or downtime. Thus, the multi-cloud infrastructure enhances the dependability of the cloud-based system. However, it also poses many challenges such as nonstandard and inherent complexity due to different technologies,...
We study the data reliability problem for a community of devices forming a mobile cloud storage system. We consider the application of regenerating codes for maintaining a file within a geographically-limited area. Such codes require lower bandwidth to regenerate lost data fragments compared to file replication or reconstruction. We investigate threshold-based repair strategies where data repair is...
Virtualization is central to cloud computing systems. It abstracts computing resources to be shared among multiple virtual machines (VMs) that can be easily managed to run multiple applications and services. To benefit from the advantages of cloud computing, and to cope with increasing traffic demands, telecom operators have adopted cloud computing. Telecom services and applications are, however,...
Real-time Audio/Video (A/V) collaboration is an application domain for which Cloud adoption is being investigated. However, the professional market generally prefers reliability over elasticity / scalability, in terms of managed delay and quality, and hence usually relies on dedicated specialized hardware and network setups, which are costly and hard to scale. This paper proposes cloud-enabled A/V...
Bluetooth Low Energy (BLE) has recently positioned itself as one of the key enabling technologies in the Internet of Things (IoT). In order to provide scalability, one promising way to collect data from BLE sensors is to utilize the existing population of smartphones in their range as relays to the cloud. In this case, providing reliable data transfer becomes complicated due to challenges such as...
Cloud computing is a new commercial model with distributed computing, utility computing, and grid computing. In many situations, both the cloud service providers (CSPs) and cloud service users maximize their earnings. Consequently, how to resolve the resource allocation and determine the transaction pricing between CSPs and users is a big challenge. In this paper, we propose a double auction-based...
Online graph analytics and large-scale interactive applications such as social media networks require low-latency data access to billions of small data objects. These applications have mostly irregular access patterns making caching insufficient. Hence, more and more distributed in-memory systems are proposed keeping all data always in memory. These in-memory systems are typically not optimized for...
Cloud Computing was growing so fast today. The services are Infrastructure as a Service (IaaS), Software as a Service (SaaS), and Platform as a Service (PaaS). This development of cloud computing align with the development of computer in this new age which turn people to work mobile and faster. Cloud computing could be one of the new tools in supporting learning process for students in Higher Education...
Cloud computing is a computing paradigm which has the potential to speed up Information Technology adoption among SMEs in developing economies like India. The user friendly, pay per use cloud computing model offers SMEs access to highly scalable and reliable cloud infrastructure without having to invest on buying and maintaining expensive Information Technology resources. However, moving data and...
The Hadoop Distributed File System (HDFS) is a distributed storage system that stores large volumes of data reliably and provide access to the data by the applications at high bandwidth. HDFS provides high reliability and availability by replicating data, typically three copies, and distribute these replicas across multiple data nodes. The placement of data replicas is one of the key issues that affect...
Cloud computing has emerged as the primary and popular computing paradigm recently. Since cloud users move continuously, sustaining the required quality of service (QoS) in a cost effective manner is very challenging. For maintaining the required QoS for a moving user, the current cloud systems use some of the existing service replication or/and migration strategies. However, those policies become...
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