Electrical computers and digital processing systems: multicomput – Remote data accessing
Patent
1994-03-29
2000-01-18
Rinehart, Mark H.
Electrical computers and digital processing systems: multicomput
Remote data accessing
G06F 1338, G06F 1517
Patent
active
060165065
ABSTRACT:
An improved SCSI controller provides a logical connection between a pluray of host processors using a single SCSI initiator. The controller contains removable host adapters for connection to any type of host processor interface. When a host processor requests status information of a target device, that status information is passed to the requesting processor and subsequently stored in the controller and made available to all other host processors. In addition, a fault tolerant performance monitoring algorithm, executing within the controller, is scheduled to non-intrusively and periodically check the status of each SCSI target device and to store that status information for all host processors. The advantage to such a controller is that by using a single SCSI initiator, each host processor can independently and logically connect through the controller and SCSI initiator to a target without clearing target status information for other host processors. This is particularly advantageous when adapted to function in a local area network (LAN) arrangement wherein a significant number of host processors are requesting data.
REFERENCES:
patent: 4783730 (1988-11-01), Fischer
patent: 4864532 (1989-09-01), Reeve et al.
patent: 5471634 (1995-11-01), Giorgio et al.
ANSI X3.131-1986, pp. 26, 51-71, 80-82, 185-186, 194-199, 208-209.
Amuro Stephen J.
Giorgio Paul J.
Gauthier Robert W.
Lall Prithvi C.
McGowan Michael J.
Rinehart Mark H.
The United States of America as represented by the Secretary of
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