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Cloud Services have become an important part of the business world. Although public cloud services provide a range of advantages, it also creates concerns over security, network usage and the need for technical expertise in the management of the cloud. This paper describes a local private cloud which uses on-site hardware infrastructure and which incorporates a three tier management system. This device...
Network service providers have to cope with the growing on-demand need from end-users as well as the diversity of usage. The softwerization and cloudification of the network components offer an interesting solution to achieve the agility necessary to dynamically match the requirement with the level of resource consumption. This materializes with the deployment of Network Functions Virtualization (NFV)...
Software-Defined Networking is a new approach to the design and management of networks. It decouples the software-based control plane from the hardware-based data plane while abstracting the underlying network infrastructure and moving the network intelligence to a centralized software-based controller where network services are deployed. The challenge is then to efficiently provision the service...
Cloud storage services, like S3, has drawn increasing popularity as primary data storage repository for users and enterprises because data can be conveniently accessed and shared through simplified web service based interface. However, users still desire the full use of the performance and capacity of their purchased storage resources, and to retain the POSIX I/O interface for accommodating general...
On a cluster system running behind the Cloud computing, multiple processes are generated from most applications and then executed on multiple computing nodes. Their processes communicate with each other during their execution. The communication performance among multiple processes plays an important role in the total execution performance of an application. The SDN-enhanced JMS, which we have developed...
This paper presents a model for Virtual Network Function (VNF) placement and chaining across Cloud environments. We propose a new analytical approach for joint VNFs placement and traffic steering for complex service chains and different VNF types. A custom greedy algorithm is also proposed to compare with our solution. Performance evaluation results show that our approach is fast and stable and has...
Cloud storage controllers combine multiple heterogeneous storage services into a unified virtual storage area for users. The overall storage quality depends on all the individual service qualities as well as on the controller's ability to mitigate quality issues, for instance with caches and proper scheduling to improve the availability of data. Given a set of storage services with an estimated capacity...
When there is the necessity to send an email message to a big list of email destinations and following the valid standard Simple Mail Transfer Protocol (SMTP), it takes too much time to be delivered, because this message is sent one by one to each of the email destinations. If we talk also of an important message that all the recipients are in need to receive it in a timeless way, converting this...
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