Method and apparatus for determining unknown relationships between storage devices and storage device enclosures
Method, program product, and system for the probabilistic determination of storage device enclosure-to-storage device relationships in a storage system, when the exact relationship is unknown. A table is built at storage system startup representing the initial storage device enclosure to storage dev...
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| creator | HE ZHENGWEN KNIGHT GREGORY J YONKER WILLIAM ROY |
| description | Method, program product, and system for the probabilistic determination of storage device enclosure-to-storage device relationships in a storage system, when the exact relationship is unknown. A table is built at storage system startup representing the initial storage device enclosure to storage device relationship. For efficiency, as topology changes occur within the storage system, the table is not updated to reflect the topology change. When a user wishes to access a specific storage device enclosure, the table is opened, and the most recently added storage device entry for the selected enclosure is chosen. The chosen storage device is queried for its current physical location. If the storage device still resides within the selected enclosure, the user access the enclosure via the chosen storage device. If the chosen storage device does not reside within the disclosure, the storage device entry is moved to the enclosure entry where it now resides, and the next most recently added storage device within the selected enclosure entry is chosen. The storage device select/query process is repeated until a storage device referenced by the chosen storage device entry is determined to reside within the selected enclosure. If the list of storage devices for the selected enclosure entry is exhausted, the table is rebuilt. |
| format | Patent |
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A table is built at storage system startup representing the initial storage device enclosure to storage device relationship. For efficiency, as topology changes occur within the storage system, the table is not updated to reflect the topology change. When a user wishes to access a specific storage device enclosure, the table is opened, and the most recently added storage device entry for the selected enclosure is chosen. The chosen storage device is queried for its current physical location. If the storage device still resides within the selected enclosure, the user access the enclosure via the chosen storage device. If the chosen storage device does not reside within the disclosure, the storage device entry is moved to the enclosure entry where it now resides, and the next most recently added storage device within the selected enclosure entry is chosen. The storage device select/query process is repeated until a storage device referenced by the chosen storage device entry is determined to reside within the selected enclosure. If the list of storage devices for the selected enclosure entry is exhausted, the table is rebuilt.</description><edition>7</edition><language>eng</language><subject>CALCULATING ; COMPUTING ; COUNTING ; ELECTRIC COMMUNICATION TECHNIQUE ; ELECTRIC DIGITAL DATA PROCESSING ; ELECTRICITY ; PHYSICS ; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION</subject><creationdate>2003</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20031230&DB=EPODOC&CC=US&NR=6671789B1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20031230&DB=EPODOC&CC=US&NR=6671789B1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>HE ZHENGWEN</creatorcontrib><creatorcontrib>KNIGHT GREGORY J</creatorcontrib><creatorcontrib>YONKER WILLIAM ROY</creatorcontrib><title>Method and apparatus for determining unknown relationships between storage devices and storage device enclosures</title><description>Method, program product, and system for the probabilistic determination of storage device enclosure-to-storage device relationships in a storage system, when the exact relationship is unknown. A table is built at storage system startup representing the initial storage device enclosure to storage device relationship. For efficiency, as topology changes occur within the storage system, the table is not updated to reflect the topology change. When a user wishes to access a specific storage device enclosure, the table is opened, and the most recently added storage device entry for the selected enclosure is chosen. The chosen storage device is queried for its current physical location. If the storage device still resides within the selected enclosure, the user access the enclosure via the chosen storage device. If the chosen storage device does not reside within the disclosure, the storage device entry is moved to the enclosure entry where it now resides, and the next most recently added storage device within the selected enclosure entry is chosen. The storage device select/query process is repeated until a storage device referenced by the chosen storage device entry is determined to reside within the selected enclosure. 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A table is built at storage system startup representing the initial storage device enclosure to storage device relationship. For efficiency, as topology changes occur within the storage system, the table is not updated to reflect the topology change. When a user wishes to access a specific storage device enclosure, the table is opened, and the most recently added storage device entry for the selected enclosure is chosen. The chosen storage device is queried for its current physical location. If the storage device still resides within the selected enclosure, the user access the enclosure via the chosen storage device. If the chosen storage device does not reside within the disclosure, the storage device entry is moved to the enclosure entry where it now resides, and the next most recently added storage device within the selected enclosure entry is chosen. The storage device select/query process is repeated until a storage device referenced by the chosen storage device entry is determined to reside within the selected enclosure. If the list of storage devices for the selected enclosure entry is exhausted, the table is rebuilt.</abstract><edition>7</edition><oa>free_for_read</oa></addata></record> |
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| subjects | CALCULATING COMPUTING COUNTING ELECTRIC COMMUNICATION TECHNIQUE ELECTRIC DIGITAL DATA PROCESSING ELECTRICITY PHYSICS TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION |
| title | Method and apparatus for determining unknown relationships between storage devices and storage device enclosures |
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