System and method for supporting block-based protocols on a virtual storage appliance executing within a physical storage appliance
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United States of America Patent
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Jul 24, 2012
Grant Date -
Oct 13, 2005
app pub date -
Apr 12, 2004
filing date -
Apr 12, 2004
priority date (Note) -
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Abstract
An architecture provides the ability to create and maintain multiple instances of virtual servers, such as virtual filers (vfilers), within a server, such as a storage appliance. A vfiler is a logical partitioning of network and storage resources of the storage appliance platform to establish an instance of a multi-protocol server. Each vfiler is allocated a subset of dedicated units of storage resources, such as volumes or logical sub-volumes (qtrees), and one or more network address resources. Each vfiler is also allowed shared access to a file system resource of a storage operating system. To ensure controlled access to the allocated and shared resources, each vfiler is further assigned its own security domain for each access protocol. A vfiler boundary check is performed by the file system to verify that a current vfiler is allowed to access certain storage resources for a requested file stored on the filer platform.
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