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IBM DS8870 Architecture and Implementation by Maged Sallam, Stephen Manthorpe, Jean Francois Lepine, Jeff Cook, Juan Brandenburg, Bertrand Dufrasne

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Virtualization concepts
This chapter describes virtualization concepts as they apply to the DS8870.
The following topics are covered:
 – Array sites
 – Arrays
 – Ranks
 – Extent pools
 – Track space-efficient volumes
 – Logical subsystems (LSSs)
 – Volume access
In addition, these topics are covered:

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