http://www.ngs.ac.ukhttp://www.grid-support.ac.uk

http://www.eu-egee.org/http://www.pparc.ac.uk/http://www.nesc.ac.uk/

Data services on the NGS

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Acknowledgments

• Matt Ford for OGSA-DAI and Oracle slides taken from his presentations for the NGS Induction Workshop (Dec. 2004, NeSC)

• Peter Berrisford for SRB slides

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Overview

• OGSA-DAI: database access and integration– grid-enabled database access….

• GridFTP: a protocol for large file transfer • The Storage Resource Broker:

– virtual file system for distributed file systems– Replica files in different locations, catalogue service

to find them.

• But first….

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Oracle and the NGS

• The NGS core nodes, from the outset, have been partitioned into compute and data clusters.

• As the NGS matures the requirement for data hosting will grow

• Oracle database: for both users and services offered by the NGS.

• The RAL and Manchester sites are designated as the data clusters with each site having the ability to dedicate up to eight nodes for use by Oracle.

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Support• Additional application needed after joining the

NGS • All enquiries and production support for the

Oracle service is via the Grid Operations Support Centre (GOSC)– 9-5 Operational support (monitoring, notification,

maintenance) other times best endeavours basis.

Oracle and the NGS

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OGSA-DAI

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What is OGSA-DAI?

• The Open Grid Services Architecture Data Access and Integration project is concerned with constructing middleware to assist with access and integration of data from separate data sources via the grid.

• The project was conceived by the UK Database Task Force and is working closely with the Global Grid Forum DAIS-WG and the Globus team.

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OGSA-DAI and the NGS

• the OGSA-DAI deployment on the NGS is being actively developed

• users should expect that procedures may change – it does not reflect the commitment NGS has to providing a service.

• Initially the Manchester JISC data cluster has been charged with deploying the OGSA-DAI service

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OGSA-DAI practical