Device information backup method, device, and system

摘要

Embodiments of the present invention disclose a device information backup method, device, and system for information backup between a first device and a second device. The first device and the second device are directly connected through a cable, and the first device acquires, from the second device through the cable, information to be backed up and back up the information to be backed up. In this way, information backup can be completed quickly and simply, and shortcomings of a poor reliability and a poor security of a pluggable storage medium are avoided.

主权项

1. A second device, comprising a second processor, a second memory, a second backup port, a second power supply apparatus, a second switching circuit, a second diode and a second bus, wherein: the second processor, the second memory, and the second backup port are connected to the second bus and communicate through the second bus, the second switching circuit is located on the second bus and between the second processor and the second memory;
the second device is directly connected to a first device through a cable, wherein the first device comprises a first processor, a first memory, a first backup port, a first switching circuit, a first diode and a first bus; the first processor, the first memory, and the first backup port are connected to the first bus and communicate through the first bus; the first switching circuit is located on the first bus and between the first processor and the first memory; wherein the first bus and the second bus are of a same type; the second power supply apparatus is configured to supply power to the second processor, the second memory and the second switching circuit, and to the first switching circuit and the first memory through the cable when the second device is in a power-on state and the first device is in a power-off state, wherein the power through the cable and supplied by the second power supply apparatus is separated by the first diode from being supplied to the first processor; the second diode is configured to ensure other power which is through the cable and supplied by the first power supply apparatus being supplied only to the second memory and the second switching circuit when the second power supply apparatus is stopped; and the second processor is configured to read, directly from the first memory through the second bus, the second backup port, the cable, the first backup port and the first bus, information to be backed up and write into the second memory the information to be backed up, wherein the cable connects the second backup port and the first backup port of the first device.