Community Research and Development Information Service - CORDIS

DREAMS: an integrated solution providing reliable, consistent and continuous access to data information

DREAMS is an integrated solution that provides a reliable, consistent and continuos access to data information for mission critical applications. Built on top of industry-standard interconnected computer servers and off-the-shelf software platforms, DREAMS is an open multinode system easy to manage, highly reliable, flexible to grow and meet the requirements of both workgroup and enterprise information management systems. DREAMS demonstrates a cost effective multinode cluster solution. It addresses the needs of mission critical applications by providing continuous processing and data availability, thus minimizing the downtime costs. It offers a flexible scaleable computing platform, capable to expand as demand grows. It takes advantage of industry standard building blocks which compete at different levels to the global solution. Server platforms are interconnected to form a multinode system thus achieving performance and availability advantages. Scaleability is provided by the ability to integrate multi-processor servers and to expand the cluster configuration up to four nodes. Connection among nodes is realized by means of industry standard SCI link and a SSA channel. SCI makes a reliable high bandwidth and low latency link available to the clustered system, significantly reducing the overhead due to message passing among the nodes. The access to shared disks benefits from the high-speed redundant channel provided by SSA. Off-the-shelf software applications on the most common operating system platforms provide continuous processing and data high availability: should a server fail, other servers in the clustered system will act on behalf of the failed one. A stock-exchange application validates the multinode platform capabilities in a real environment, taking advantage of the features offered by the cluster solution in terms of availability and scaleability.

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OP Computers SpA
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