Electrical computers and digital data processing systems: input/ – Input/output data processing – Peripheral monitoring
Patent
1994-03-29
1999-11-23
Follansbee, John A.
Electrical computers and digital data processing systems: input/
Input/output data processing
Peripheral monitoring
710 5, 709213, G06F 1300
Patent
active
059918292
ABSTRACT:
An SCSI controller adapted as a network file server provides a virtual coction between a plurality of host processors and a single SCSI initiator. The controller contains a removable host adapter for connection to any type of network interface. When a host processor issues a command packet and 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 on the network. 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 the expanded number of host processor connections to a single SCSI initiator whereby 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.
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Amuro Stephen J.
Giorgio Paul J.
Follansbee John A.
Gauthier Robert W.
Lall Prithvi C.
McGowan Michael J.
The United States of America as represented by the Secretary of
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