Storage area network methods and apparatus with virtual SAN recognition
DCFirst Claim
1. A storage area network (SAN) comprisingone or more regions forming at least a portion of the SAN, each region having one or more components, the components including one or more digital data processors and one or more storage devices;
- one or more scanners that collect, for each region, information regarding the components and their interconnectivity;
a manager, coupled to the one or more scanners, that responds to the collected information to determine a topology of a portion of the SAN spanned by the regions.
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Abstract
A storage area network (SAN) has one or more host digital data processors are coupled to one or more storage devices (e.g., LUNs) by an interconnect, e.g., a fiber channel-based fabric. Switches or switch-like interfaces on the interconnect fabric define zones or regions in which certain hosts can access certain storage devices, but not other storage devices. Scanners, e.g., operating within agents associated with the hosts, collect information regarding the regions and, more particularly, the hosts, storage devices and interconnect elements that make them up. A manager operating, for example, on a further digital data processor disambiguates information from the regions and discerns the topology of the portion of the SAN spanned by the regions. Thus, it identifies as a virtual SAN elements from regions that have at least one common storage device with at least one other region.
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Citations
26 Claims
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1. A storage area network (SAN) comprising
one or more regions forming at least a portion of the SAN, each region having one or more components, the components including one or more digital data processors and one or more storage devices; -
one or more scanners that collect, for each region, information regarding the components and their interconnectivity;
a manager, coupled to the one or more scanners, that responds to the collected information to determine a topology of a portion of the SAN spanned by the regions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A storage area network (SAN) comprising
a plurality of hosts, each coupled via an interconnect with a plurality of storage units, the hosts and storage units forming a plurality of regions, each comprising one or more hosts in communication coupling with one or more storage devices over the interconnect, a manager digital data processor that maintains a topological representation of the SAN, one or more scanners, in communication coupling with the hosts and with the manager digital data processor, that determine the hosts and storage units in each region, and the manager digital data processor determining, as a function of the information collected by the scanners, a topology of a portion of the SAN spanned by the regions.
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23. A method of determining a topology of at least a portion of a storage area network (SAN) spanned by one or more regions, comprising:
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identifying, for each region, one or more components contained within that region and their connectivity to generate information regarding topology of that region via a first network, and collating the information regarding topology of the one or more regions via a second network to determine topology of the portion of the SAN spanned by those regions. - View Dependent Claims (24, 25, 26)
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Specification