Fault tolerant computer system
AssigneeNEC Corporation
InventorShinji Abe
Life of this patent
Estimating the term…
Abstract
A fault tolerant (FT) computer system includes a first system; and a second system configured to operate in synchronization with the first system. Each of the first and second systems includes a CPU; and a routing controller connected with the CPU. The first system includes a first I/O device as an activist I/O device, and the second system includes a second I/O device as a standby I/O device. The routing controller controls a routing between the CPU and the first I/O device and the second I/O device. When a fault has occurred in the first I/O device, the routing controller in said first system routes a request data a request data received from the CPU and destined to the first I/O device, to the second I/O device.
Claims18
A fault tolerant (FT) computer system comprising:
- a first system as an active system comprising first I/O devices;
- and
- a second system as a standby system comprising second I/O devices, which are same as said first I/O devices, connected with said first system through a link section, and configured to operate in synchronization with said first system,
- wherein each of said first and second systems comprises:
- a CPU;
- and
- a routing controller connected with said CPU,
- said routing controller in said first system controls a routing between said CPU in said first system and said first I/O devices and said second I/O devices, and
- when a fault has occurred in one of said first I/O devices, said routing controller in said first system routes a request data received from said CPU in said first system and destined to said first I/O device, to one of said second I/O devices corresponding to said I/O device.
A fault tolerant (FT) computer system comprising:
- a first system comprising a first I/O device as an activist I/O device;
- and
- a second system comprising a second I/O device as a standby I/O device, which is same as said first I/O device, connected with said first system through a link section, and configured to operate in synchronization with said first system,
- wherein each of said first and second systems comprises:
- a CPU;
- and
- a routing controller connected with said CPU to control a routing between said CPU and said first I/O device and said second I/o device, and
- said routing controller comprises a register group and a controller, and
- said controller comprises:
- an address converter connected with said CPU to selectively convert a request data outputted from said CPU based on a first data stored in said register group;
- a response data converter connected with said CPU to selectively convert a response data to be outputted to said CPU, based on a second data stored in said register group;
- and
- a router connected with said address converter and said response data converter to route said request data and said response data,
Dependencies are inferred from the claim text.