Processing device, failure recovery method therefor, and failure restoration method

摘要

A processing device includes a processor which executes first and second pieces of control software in a memory to perform processing, and a device 1 having a plurality of SLOTs 1 to 8 to electrically connect the processor to a plurality of device. The device 1 switches a SLOT which connects devices 2 and 3 between a SLOT 1 or 2 and a spare SLOT 8 allocated in advance through a switch. The processor executes the first and second pieces of control software to manage SLOT information including pieces of path information obtained through the SLOTs 1, 2, and 8 between the devices 1 and 2 such that the SLOT information can be registered and updated. When a failure occurs in the SLOT 1 or 2, the processor updates the path information obtained through the SLOT 1 into the path information obtained through the spare SLOT, and the SLOT which connects the devices 2 and 3 is switched from the SLOT 1 or 2 to the spare SLOT 8.