Abstract. The property flood resilience database (PFR-d) has been created through a research feasibility study undertaken by the Building Research Establishment, AXA Insurance and Lexis Nexis Risk Solutions in the UK. The project was funded by Innovate-UK and was undertaken over the period of May 2014 to August 2015. There has been a growing realisation that flood management has to move from a position where flood defence (e.g. major river barriers and drainage infrastructure) is the only solution to flood risk to one of flood resilience. This shift requires an increase in responsibility for a variety of stakeholders, including property owners. The PFR-d was conceived as a product that code fit within the existing insurance frameworks and systems. The PFR-d is a 'missing piece of data' for insurers that could assist in providing more appropriate insurance pricing in high flood risk areas, or where properties have suffered repeat flooding events.
This paper is concerned with the overall design of the Terabit File Storea network storage facility based on a Braegen Automated Tape Library. The characteristics of the tape libraryin particular its large capacity and slow accessprovide both challenges and opportunities for the system designer. The use of disc cache and the optimization of file placement have been used to provide reasonable performance in the face of substantial tape handling times. Catalogue facilities have been tailored to cater for the support of large file holdings and user file back-up applications. It has been possible to automate the back-up of essential file-store information which together with automatic integrity checks, helps to minimize the damage that can be caused by faults. Considerable attention has been given to facilities that automate much of the management of the system in a network environment. Other aspects of the design discussed in the paper include protection, housekeeping and host interfacing. KEY WORDS File store Large scale storage Automation Tape library Network Cache Australian Government research organization with over 7000 employees at 50 sites around the country. The CSIRO Division of Computing Research (DCR) runs the CSIRONET computing service for use by CSIRO, government and other users. Major host computers on the network are a Cyber 76 running SCOPE 2, a Cyber 835 running 0038-0644/85/090889-1 lj601.10 0 1985 by John Wiley tk Sons, Ltd.
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