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The term "hypervisor" within "storage hypervisor" is so named because it goes beyond a supervisor,<ref>{{cite web|title=Hypervisor glossary definition|url=http://www.xen.org/files/xen_user_manual.pdf|work=Xen v2.0 for x86 Users' Manual (PDF)|publisher=Xen.org on August 20, 2011}}</ref> it is conceptually a level higher than a supervisor and therefore acts as the next higher level of management and intelligence that sits above and spans its control over device-level storage controllers, disk arrays, and virtualization middleware.
A storage hypervisor has also been defined as a higher level of storage virtualization <ref>{{cite web|title=SearchStorage.com definition|url=http://searchstorage.techtarget.com/definition/storage-virtualization|publisher=What is storage virtualization? Definition on SearchStorage.com}}</ref> software, providing a "Consolidation and cost: Storage pooling increases utilization and decreases costs. Business availability: Data mobility of virtual volumes can improve availability. Application support: Tiered storage optimization aligns storage costs with required application service levels".<ref>{{cite book|title=IBM SmartCloud Virtual Storage Center|date = 6 March 2015|url=https://books.google.com/books?id=_pbABgAAQBAJ&pg=PA28
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