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m →References: One of the reference links was broken, so I found a supplemental page and updated the text in the body to accurately define storage virtualization within the context of the paragraph.
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 levelsoftware of abstracting physical data storage virtualizationresources to make them appear as if they were a centralized resource <ref>{{cite web|title=SearchStorage.comEnterprise Storage Forum definition|url=httphttps://searchstoragewww.techtargetenterprisestorageforum.com/definitionhardware/storage-virtualization/|publisherurl-status=Whatlive|website=Enterprise isStorage storageForum|publisher=Storage virtualization? Definition on SearchStorage.comVirtualization}}</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|publisher=IBM Redbooks|isbn = 9780738440439}}</ref> The term has also been used in reference to use cases including its reference to its role with storage virtualization in disaster recovery <ref>{{cite web|title=SearchDisasterRecovery Article|url=http://searchdisasterrecovery.techtarget.com/news/2240037212/The-cloud-and-virtualization-havent-make-IT-disaster-recovery-plans-obsolete|publisher=Published in SearchDisasterRecovery.com on June 23, 2011 and written by Todd Erickson}}</ref> and, in a more limited way, defined as a volume migration capability across SANs.<ref>{{cite web|title=ComputerWorld Article|url=http://www.computerworld.com.au/article/368886/compellent_adds_virtualization_hardware_upgrades_its_san/|publisher=Published on November 23, 2010 and written by Lucas Mearian
