Electrical computers and digital processing systems: interprogra – Device driver communication
Reexamination Certificate
2006-11-14
2006-11-14
Thomson, William (Department: 2194)
Electrical computers and digital processing systems: interprogra
Device driver communication
C719S325000, C719S326000, C711S100000, C711S163000, C718S104000
Reexamination Certificate
active
07137124
ABSTRACT:
The invention provides improvements on storage area network (SAN) of the type having one or more host digital data processors in communication with one or more storage devices, where a host has an operating system that utilizes (i) a port driver to define a software interface between a class driver and an adapter to which one or more of the storage devices are coupled, and (ii) a class driver that claims storage devices for access, e.g., by the operating system and any applications programs executing therein, by invoking the port driver to which the host is coupled, e.g., via the interconnect fabric. The improvement comprises a software filter in communication with the port driver and the class driver. That filter intervenes to block claiming of one or more selected storage devices by the class driver.
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Lamb Michael Loren
Swank Raymond Matthew
Davda Janaki K.
Konrad Raynes & Victor LLP
Thomson William
Wu Qing-Yuan
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