... processors and fast communications link) [52] and a software ‘stack’, for example, containing OS, database system, system management software, and Data Grid software (e.g. the SRB), and offer ... Grids and Grid toolkits. They include the SRB Data Grid described here, the European DataGrid replica-tion environment (based upon GDMP, a project in common between the European Data- Grid and ... for a Data Grid, that is, a GridBrick.410REAGAN W. MOORE AND CHAITAN BARUdata, and file systems may use yet another for files. Data Grids must provide the capabilityto assemble (and, further,...