May 2011
Intermediate to advanced
626 pages
15h 3m
English
book
Implementing the IBM Storwize V7000
by Brian Cartwright, Ronda Hruby, Daniel Koeck, Xin Liu, Massimo Rosati, Thomas Vogel, Bill Wiegand, Jon Tate
Content preview from Implementing the IBM Storwize V7000
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Chapter 1. Overview of the IBM Storwize V7000 system 21
1.5.9 Volumes
A volume is a logical disk that is presented to a host system by the clustered system. In our
virtualized environment, the host system has a volume mapped to it by IBM Storwize V7000.
IBM Storwize V7000 translates this volume into a number of extents, which are allocated
across MDisks. The advantage with storage virtualization is that the host is “decoupled” from
the underlying storage, so the virtualization appliance can move the extents around without
impacting the host system.
The host system cannot directly access the underlying MDisks in the same manner as it could
access ...
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