(1) Data scales from terabyte to petabyte reside in archives
(2) specific dataset accessing, download does not work (too long to download)
(3) Virtual Obseratory --- Grid Interface from Grid Portal
(4) Pipeline processing and data federation
(5) virtual data dynamically created from archieved components
(6) Registry for Metadata of the content for sub data set accessing
(7) samll query againist archieve server, large for cluster of computers
(8) no computation near the data but use cluster of computation near the data
(9) Portal federate web services to provide uniform access
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