Title :
Replica selection in the Globus Data Grid
Author :
Vazhkudai, Sudharshan ; Tuecke, Steven ; Foster, Ian
Author_Institution :
Dept. of Comput. & Inf. Sci., Mississippi Univ., MS, USA
Abstract :
The Globus Data Grid architecture (I. Foster and C. Kesselman, 1998), provides a scalable infrastructure for the management of storage resources and data that are distributed across Grid environments. These services are designed to support a variety of scientific applications, ranging from high-energy physics to computational genomics, that require access to large amounts of data (terabytes or even petabytes) with varied quality of service requirements. By layering on a set of core services, such as data transport, security, and replica cataloging, one can construct various higher-level services. We discuss the design and implementation of a high-level replica selection service that uses information regarding replica location and user preferences to guide selection from among storage replica alternatives. We first present a basic replica selection service design, then show how dynamic information collected using Globus information service capabilities concerning storage system properties can help improve and optimize the selection process. We demonstrate the use of Condor´s ClassAds resource description and matchmaking mechanism as an efficient tool for representing and matching storage resource capabilities and policies against application requirements
Keywords :
client-server systems; distributed shared memory systems; quality of service; resource allocation; storage allocation; ClassAds resource description; Condor; Globus Data Grid architecture; Globus information service capabilities; Grid environments; application requirements; computational genomics; core services; data transport; dynamic information; high-energy physics; high-level replica selection service; higher-level services; matchmaking mechanism; quality of service requirements; replica cataloging; replica location; replica selection; replica selection service design; scalable infrastructure; scientific applications; selection process; storage replica alternatives; storage resource capabilities; storage resource management; storage system properties; user preferences; Bioinformatics; Computer architecture; Data security; Design optimization; Environmental management; Genomics; Information security; Physics computing; Quality of service; Resource management;
Conference_Titel :
Cluster Computing and the Grid, 2001. Proceedings. First IEEE/ACM International Symposium on
Conference_Location :
Brisbane, Qld.
Print_ISBN :
0-7695-1010-8
DOI :
10.1109/CCGRID.2001.923182