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Virtualization supplies a straightforward approach to high availability through iterative replications of virtual machine (VM) checkpoints that encapsulate the protected services. Unfortunately, traditional VM replication solutions suffer from deficiencies in either response latency or state recovery consistency, which constrains the adoption of VM replication in production. In this paper, we extend...
Recently, network virtualization technology (NFV) is being studied to reduce network operation cost, mainly in telco companies. Network virtualization technology is a technology that enables software control by abstracting computing, server, and network functions that were formerly hardware-oriented. Network virtualization technology provides the opportunity for small and medium enterprises with technology...
Migrating to the cloud is becoming a necessity for the majority of businesses. Cloud tenants require certain levels of performance in aspects like high availability and service rate and deployment options. On the other hand, Cloud providers are in constant pursuit of a system that satisfies client demands for resources, maximizes availability, minimizes power consumption and, in turn, minimizes the...
There are several layers of virtualization, which can be combined with ERP installations. The most popular form is the processing virtualization or hyper-visoring. Our study collects the advantages of the different virtualization layers (sometimes referring to products, solutions) from business application point of view. Application virtualization layer is detailed a bit more than the others, because...
Cloud computing is being rapidly adopted across the IT industry, driven by the need to reduce the total cost of ownership of increasingly more demanding workloads. Within companies, private clouds are offering a more efficient way to manage and use private data centers. In the broader marketplace, public clouds offer the promise of buying computing capabilities based on a utility model. This utility...
Virtual machine (VM) replication has been recognized as an inexpensive way of providing high availability on commodity hardware. Unfortunately, its impact on system performance is far from negligible and strategies have been proposed to mitigate this problem. In this paper we take a look at VM replication from a different perspective: the choice of a hyper visor. Namely, the differences between hyper...
The use of VoIP technologies is still growing: a SIP based client is nowadays integrated even in the Google's smartphone operating system Android. Recent progress in virtualization technology allows the use of virtual machines for real-time applications like VoIP. A continuous live migration of a whole system without breaking down of existing TCP and TLS connections is improving the availability and...
This paper describes our experience using the dynamic resource reallocation capabilities offered by virtualization technologies, in implementing: 1. Automation of end-to-end failover of mission critical virtualized application, a SAN network and EMC Clarion based storage to a remote site and 2. On-demand and scheduled assurance of failover and measurement of RPO and RTO (The Recovery Point Objective...
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