Data array having redundancy messaging between array...

Details Data array having redundancy messaging between array... Data array having redundancy messaging between array...

2006-08-15

2006-08-15

Perveen, Rehana (Department: 2112)

Electrical computers and digital data processing systems: input/

Intrasystem connection

System configuring

C710S305000, C711S162000

Reexamination Certificate

active

07093043

ABSTRACT:
A data array system, and inter-controller-link messaging method, for controlling redundant access to a storage device and providing inter-controller communication without a dedicated controller link. The host has a host bus, such as a PCI bus, and the system includes an active and a standby controller that are linked to the host bus and use the host bus for an inter-controller-link. A messaging mechanism transmits messages and data over the host bus from the active to the standby controller. The standby controller includes message and data buffers for storing the messages and data written and a message queue in which the active controller writes a signal identifier indicating that a new message has been written and defining the message for processing by the standby controller (such as a message-only transfer, a partial or all data transfer, or as a data-only transfer).

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