Universal multi-path driver for storage systems

Details Universal multi-path driver for storage systems Universal multi-path driver for storage systems

2007-05-22

2007-05-22

Thomson, William (Department: 2194)

Electrical computers and digital processing systems: interprogra

Device driver communication

Reexamination Certificate

active

10321029

ABSTRACT:
An embodiment of the invention is a technique to manage multipaths for input/output (I/O) devices. An I/O request packet (IRP) from a higher level driver is received. A plurality of paths to a plurality of device objects is managed in response to the IRP using a plurality of lower level drivers. The device objects correspond to physical devices having M device types. The lower level drivers control the physical devices.

REFERENCES:
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patent: 6085156 (2000-07-01), Rust et al.
patent: 6233625 (2001-05-01), Vander Kamp et al.
patent: 6311228 (2001-10-01), Ray
patent: 6845508 (2005-01-01), Parry
patent: 6904477 (2005-06-01), Padmanabhan et al.
patent: 2003/0200477 (2003-10-01), Ayres

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