This paper proposes a new backup protection scheme, named coordinated backup protection (CBP) scheme, for distribution networks containing distributed generation. The proposed protection scheme takes into account the issues faced by traditional backup protection, such as difficulty in setting parameters and complex cooperation, and considers the features of distribution networks, such as change...

Cloud computing promises high performance and cost-efficiency. However, most cloud infrastructures operate at a low utilization, which greatly adheres cost effectiveness. Previous works focus on seeking efficient virtual machine (VM) consolidation strategies to increase the utilization of virtual resources in production environment, but overlook the under-utilization of backup virtual resources...

We consider a label switched network in which backup paths are provided using a local restoration scheme [1], [2]. A node receives a failure notification if either an adjacent link or a neighboring node fails. Such a node, however, cannot distinguish between link and node failures and must do one of two things. 1) Activate backup paths corresponding to both the link and the node suspected to ha...

We survey two schemes for fault tolerance for diierent fault models. The rst, primary-backup approach deals with disaster recovery. The second, is aimed at developing commit protocols that tolerate commission failures. A remote backup database system tracks the state of a primary system, taking over transaction processing when disaster hits the primary site. The primary and backup sites are phy...

This paper presents simulation experiments investigating the feasibility and cost of providing survivability to ATM multipoint groups using dedicated bandwidth on disjoint backup groups. Disjoint dedicated backup groups are formed via the VC Mesh model by two different approaches: (1) a backup group consisting exclusively of point-to-point circuits (unicast), or (2) a backup group consisting ex...

IEEE 802.22 WRAN standard does not specify algorithm for selecting operating channel from backup channel list and prioritizing the backup and candidate channels. Because all the channels in the backup and candidate channels list are not with the same properties, selecting channels randomly from the list may decrease the networks performance. We propose an approach of ranking channel according t...

In the enterprise world, retaining data backups is the de-facto solution against data loss in the event of catastrophic failures. As backup software evolves to achieve faster backup and recovery times, however, backup systems deploying it become increasingly complex to administer. This complexity stems from optimizations targeted to specific applications, which increase the number of configurat...

Burt is a freely distributed parallel network backup system written at the University of Wisconsin, Madison. It is designed to backup large heterogeneous networks. It uses the Tcl scripting language and standard backup programs like dump(1) and GNUTar to enable backups of a wide variety of data sources, including UNIX and Windows NT workstations, AFS based storage, and others. It also uses Tcl ...

Introduction Fail-proof data backup and recovery is more critical to an organization’s survival than ever before as few businesses can survive for any period of time without their IT function. With so much reliance on electronic data, an organization can lose millions of dollars associated with lost data including its competitive advantage and credibility as in the case of security breaches. Im...

Database systems provide media recovery by talcing periodic backups and applying a recovery log to a backup to r’estore the failed media. A transaction-time database is one that retains multiple versions of data, recording with each version the time of the transaction that created it. Such a database provides access to historical versions based on transaction time, and permits reconstruction of...