Real-time fail-over recovery for a media area network

Details Real-time fail-over recovery for a media area network Real-time fail-over recovery for a media area network

G - Physics

06

F

G06F 11/16 (2006.01) G06F 11/30 (2006.01)

Patent

CA 2494325

A media area network (10) includes a storage system (16) having at least one storage device (18) for storing digitized information. A host bus (14) adapter provides a link between the storage system and a host system (12) that provides overall control of the media area network. Within the host bus adapter, a lower-level port driver (24) monitors communications between the storage system and the host bus adapter. In the event of a communications failure, the lower-level port driver initiates switching from a failed port to an alternative port, thereby achieving fail-over recovery. Allocating the responsibility for fail-over recovery to the lower-level port driver assures timely handling of port failures, thereby reducing potential latency delays.

L'invention concerne un réseau de médias (10) comprenant un système de stockage (16) possédant au moins un dispositif de stockage (18) permettant de stocker des informations numérisées. Un adaptateur de bus hôte (14) fournit une liaison entre le système de stockage et un système hôte (12) fournissant une commande globale du réseau de médias. Dans l'adaptateur du bus hôte, un pilote de port de niveau inférieur (24) surveille des communications entre le système de stockage et l'adaptateur du bus hôte. Dans le cas d'une défaillance des communications, le pilote de port de niveau inférieur entame une commutation à partir d'un port défaillant vers un port alternatif, exécutant ainsi une récupération de basculement. L'attribution de la responsabilité pour la récupération d'un basculement au pilote de port de niveau inférieur garantit un traitement temporel des défaillances des ports, réduisant ainsi des délais de retard éventuels.

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