While NoSQL databases are gaining popularity for business applications, they pose unique challenges towards backup and recovery. Our solution, BARNS addresses these challenges, namely taking: a) cluster consistent backup and ensuring repair free restore, b) storage efficient backups, and c) topology oblivious backup and restore. Due to eventual consistency semantics of these databases, traditio...

With the widespread use of real-time applications (VoIP, IPTV, Video conference, etc.) in Internet, protection and resource optimization become increasingly desired. Network protection aims to decrease the interruption time of communications by precomputing backup paths capable to receive and route traffics of affected primary paths upon failures. Resource optimization is achieved by improving ...

This paper proposes a new control method of three phase active power filterfor reducing the source current harmonics for nonlinear loads. The control strategy includes the dq transformations and hysteresis technique for current injection. Renewable energy source (solar energy) is used as a backup device for converter. Dc voltage deviations due to harmonic injections are tracked by using proport...

OBJECTIVES Various medications and devices are available for facilitation of emergent endotracheal intubations (EETIs). The objective of this study was to survey which medications and devices are being utilized for intubation by Canadian physicians. METHODS A clinical scenario-based survey was developed to determine which medications physicians would administer to facilitate EETI, their first...

We apply an adaptive forward error correction (FEC) allocation strategy to an Elastic Optical Network (EON) operated with shared backup path protection (SBPP). To maximize the protected network capacity that can be carried, an Integer Linear Programing (ILP) model and a spectrum window plane (SWP)-based heuristic algorithm are developed. Simulation results show that the FEC coding overhead requ...

OBJECTIVES Electronic medical records (EMRs) are increasingly being used by health care services. Currently, if an EMR shutdown occurs, even for a moment, patient safety and care can be seriously impacted. Our goal was to determine the methodology needed to develop an effective and reliable EMR backup system. METHODS Our "independent backup system by medical organizations" paradigm implies th...

In a primary-backup system, transaction processing takes place at the primary and the log records generated are propagated to the backup which uses them to reconstruct a recent state of the database. If the primary fails, the backup takes over transaction processing without causing users to observe a breach in service. Existing approaches can be broadly classiied as 2-safe or 1-safe based on wh...

We present an innovative backup and restore solution, called LifeBoat, for Windows machines. Our solution provides for local and remote backups and ‘‘bare metal’’ restores. Classic backup systems do a file system backup and require the machine to be installed before the system can be restored or they do a block for block backup of the system image which allows for a ‘‘bare metal’’ restore, but ...

lost through user error, software or media failure, or site disaster but are unwilling to devote system resources or downtime to make backup copies of the data. Furthermore, with the rapid growth in the use of data storage and the tendency to move systems toward complete utilization (i.e., 24-hour by 7-day operation), the practice of taking the system off line to back up data is no longer feasi...