The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Currently, cloud datacenters play a more and more important role in providing all kinds of online information services. However, large-scale datacenters incur a high probability of failures especially for service providers built on cheap commodity hardware. Proper maintenance policy can ensure high performance, dependability and low costs. In this paper, we first construct two stochastic models, separately...
In a cloud storage system, the hardware equipments storing the contents are located in many places and the capabilities of them are various. These realities draw a big challenge to providing constant and efficient service to the storage system's users. In this paper, intrigued from the features of erasure coding, we design a content storage and delivery mechanism which can tolerate cloud servers'...
Besides performance, dependability and energy efficiency are two critical concerns during the design, development and management of large-scale services computing systems. In this paper, we jointly consider the performance, dependability and energy efficiency, and optimize the dependability-aware energy efficiency of services computing systems by maximizing the quality of service and dependability...
Recently, distributed data storage has gained increasing popularity for reliable access to data through redundancy spread over unreliable nodes in wireless sensor networks (WSNs). However, without any protection to guarantee the data integrity and availability, the reliable data storage cannot be achieved since sensor nodes are prone to various failures, and attackers may compromise sensor nodes to...
Recently, sensor data storage has gained increasing popularity for reliable access to data through redundancy spread over unreliable nodes in wireless sensor networks. In storage-centric sensor networks, several schemes have been proposed to optimize the performance of data management in terms of data availability, repair bandwidth, etc. However, few works have been undertaken to study the performance...
We present a quantitative method based on stochastic Petri net (SPN) to evaluate the survivability of distributed service. Three types of combination service models: one-to-one, one-to-N, and M-to-N are studied, which can reflect survivability of distributed service from a different perspective. Absorbing-state reliability, maintainability and steady-state availability are considered as measures of...
After many years of silence, virtualization recently became a hot topic once again, especially in the field of system dependability. Current researches mostly focus on more technical methods without taking into account the problem of how to verify the dependability of these technics. This paper proposes a Markov model to describe virtualization systems and gives the solving methods to quantitatively...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.