Method and apparatus for providing highly-transparent,...

Details Method and apparatus for providing highly-transparent,... Method and apparatus for providing highly-transparent,...

2006-08-15

2006-08-15

Thomson, William (Department: 2194)

Electrical computers and digital processing systems: interprogra

Device driver communication

C709S230000, C710S316000

Reexamination Certificate

active

07093265

ABSTRACT:
A host computer environment includes a driver stack having a disk driver and a host bus adapter (HBA) driver. The driver stack further includes a multipath driver functionally embedded between the disk driver and HBA driver. At this hierarchical layer of the driver stack, the multipath driver functions at the command transport protocol level. The disk driver effectively views the multipath driver as a HBA driver type, while the HBA driver effectively views the multipath driver as a disk driver type. The multipath driver is configured to instantiate proxy virtual paths to the disk array that are visible to the host operating system but otherwise conceal the underlying physical paths. The multipath driver retains knowledge of the mapping between the physical and virtual paths. The disk array is configured to report itself to the OS as a non-disk device type, although its true identity is known by the multipath driver.

REFERENCES:
patent: 5412798 (1995-05-01), Garney
patent: 5732282 (1998-03-01), Provino et al.
patent: 6009476 (1999-12-01), Flory et al.
patent: 6145028 (2000-11-01), Shank et al.
patent: 6173374 (2001-01-01), Heil et al.
patent: 6233624 (2001-05-01), Hyder et al.
patent: 6341356 (2002-01-01), Johnson et al.
patent: 6470397 (2002-10-01), Shah et al.
patent: 6625747 (2003-09-01), Tawil et al.
patent: 6704812 (2004-03-01), Bakke et al.

Affiliated with

Also associated with

Rating

Method and apparatus for providing highly-transparent,... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for providing highly-transparent,..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for providing highly-transparent,... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3708627