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Reliable storage is central component of data centers that support private or public cloud. Erasure coding has becoming increasingly popular alternative to replication for its capability in substantially cutting disk cost while delivering the same reliability. This paper reports the comprehensive results of using FPGA for accelerating erasure encoding and decoding algorithms. In particular, to accomplish...
This paper presents a concept for an e-Science oriented opportunistic cloud computing service with QoS assurances, as an infrastructure to offer to researchers computing resources with the flexibility and ease of use of a cloud computing service, supported through the opportunistic use of the idle computing resources available in academic institutions, with mechanisms in place to address the low reliability...
Cloud computing being promising and emerging technology for the next generation of IT applications which provides the storage and supports for outsourcing of data without having the native copy of data or files. Cloud computing service providers require a system which can handle a large number of requests at a time and is needed to be highly available. Major issue faces in cloud computing is Security...
Services involving cloud computing are advertised by the providers such that they are available all the time; but many of the recent past events have shown how a single or a bunch of component seizures can lead to a system failure affecting the business continuity of consumers. Though reliability of a cloud system depends heavily on the capability of the participating components as a whole, but there...
With the development of the network data and use the change of demand, extension from cloud computing cloud storage become the research focus and hot spot. This paper mainly introduces the characteristics of cloud storage technology, and analyze the hierarchical structure of the cloud storage service, and then analyzing the data storage structure of the cloud storage service, emphasis on reliability...
A major concern of users of cloud storage services is the lost of control over security, availability and privacy of their files. That is partially addressed by end-to-end encryption techniques. However, most of the solutions currently available offer rigid functionalities that cannot be rapidly integrated into customized tools to meet user's requirements like, for example, file sharing with other...
During the past ten years, cloud computing gradually becomes mature which is a current research hotspot. OpenStack is currently one of the most popular open source cloud platforms that developed by Rack space and NASA. It provides some toolkits to deploy cloud environment and implement cloud infrastructure like Amazon EC2. In this paper, we describe OpenStack architecture in detail and introduce its...
With the rapid development of the cloud computing and big data, many data center network are growing more large scale, and the number of servers is increasing at an exponential rate. In this paper, VCG (Vickrey-Clarke-Groves) mechanism was introduced into replica placement. Mapping from replica placement model to VCG mechanism was established and suitable payment function was designed. Data storage...
As the popularity of cloud storage services grows rapidly, it is desirable and even essential for both legacy and new end-user applications to have the cloud storage capability to improve their functionality, usability, and accessibility. However, incorporating the cloud storage capability into applications must be done in a secure manner to ensure the confidentiality, integrity, and availability...
Cloud computing technology is one of the newest technologies widely used by consumers globally due to its advantages. One of the common advantages is that users can get access to applications and their own files and data on demand. However, there are privacy concerns and issues which discourage users from being active in cloud computing. This paper attempts to investigate the factors that influence...
Cellular Data Network measurement and analysis has long been used to characterize Cellular Data Network usage and user behaviors, but with the rapid growing of all kinds of smart terminals and the varied applications on them, the amount of Cellular Data Network data has been growing exponentially. With respect to this challenge, a new management system for the data storage and query has been emerging...
This paper considers current paradigms in computing and outlines the most important aspects concerning their reliability. The Fog computing paradigm as a non-trivial extension of the Cloud is considered and the reliability of the networks of smart devices are discussed. Combining the reliability requirements of grid and cloud paradigms with the reliability requirements of networks of sensor and actuators...
Failure occurrence and its impact on system performance have become an increasingly important concern in cloud computing. Most techniques in today's system are reactive schemes to recover after failure which could lead to major cost and significantly affect system performance. Instead, we propose a proactive failure aware virtual machine infrastructure for cloud computing. Our approach takes both...
There are many problems when using the traditional centralized resources management model to publish teaching resources. With the comparisons of the characteristics of HDFS and teaching resources, we propose a solution that applies the HDFS to the campus network environment, and by improving the copy place, copy reproduction and other strategies, make HDFS adapt to the campus network environment,...
In order to solve the problems such as poor data storage efficiency, data security and reliability, low resource utilization and high input costs existing in current cloud storage, an Hadoop-based efficient economic cloud storage system is proposed. The techniques of Hadoop, an efficient resource scheduling method and a probabilistic redundant scheduling are presented for the system to efficiently...
With the development of the concept of cloud computing, more and more big international IT enterprises begin to apply it to grasp first chances. At the same time, medium-sized and small enterprises in China also want to obtain more advantages by virtue of cloud computing. But, the selection and application of cloud computing is the practical problem for medium-sized and small enterprises. The security...
With the recent introduction of Spot Instances in the Amazon Elastic Compute Cloud (EC2), users can bid for resources and thus control the balance of reliability versus monetary costs. A critical challenge is to determine bid prices that minimize monetary costs for a user while meeting Service Level Agreement (SLA) constraints (for example, sufficient resource availability to complete a computation...
Soft errors are caused by cosmic rays striking sensitive regions in electronic devices. Termed as single event upset (SEU), in the past this phenomenon mostly affected the high altitude systems or avionics. The small geometries of today's nanodevices and their use in high-density and high-complexity designs make electronic systems sensitive even to the ground-level radiation. Therefore, large computer...
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