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Viam Ferream (talk | contribs) →Exadata Storage Indexes: link |
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|publisher=Oracle
}}</ref> Exadata has the strong concept of a 'storage layer' in its architecture stack. Table data is held in blocks or 'storage cells' on the storage servers. These storage cells are [[block-level storage|opaque to the storage server]] and are returned to the database engine on request, by their identifier. Previously, the database nodes must request all the storage cells in order to scan them.<ref name=Solarwinds>{{cite web
|title=Understanding Storage Indexes in Oracle Exadata
|url=http://logicalread.solarwinds.com/storage-indexes-oracle-exadata-mc05/#.Vpjbp27fXU8
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