Disk data backup system and method thereof

Abstract

The invention realizes data backup function based on multiple mirrored hard discs by using only one ATA interface so that operation of data backup is independent from operation system on host. The magnetic disc backup system includes general hard disc controller, several hard discs in identical specification, and data backup circuit module. The said general hard disc controller provides a high technical attachment unit interface, and connection between attachment unit interface and the data backup circuit module. The data backup circuit module extends a high technical attachment unit interface into several identical high technical attachment unit interfaces. The said attachment unit interface determines correctness of data read from several said hard discs. Each extended high technical attachment unit interface is connected to a hard disc.

Description

technical field [0001] The invention relates to a data backup technology, in particular to a data backup technology using a disk. Background technique [0002] In the past ten years, with the development of computer technology, the processing speed of the central processing unit (Central Processing Unit, referred to as "CPU") has increased many times, and the speed of the CPU has entered the GHz era; the access speed of the memory has also increased significantly. , the operating frequency of the memory has developed from 66MHz to 100MHz or even 133MHz, and there have been dynamic random access registers (Dynamic Random Access Memory, "DRAM") to double-rate dynamic random access memory (Double Data Rate DRAM, referred to as " DDR DRAM") leap, doubling the access speed of DRAM without increasing the operating frequency. [0003] The data storage device is mainly a hard disk, and the access speed is only increased several times, forming a bottleneck of the computer system and...

AI Technical Summary

Problems solved by technology

[0011] In practical application, the above scheme has the following problems: RAID technology has hardware and software compatibility issues and potentially increases system instability, and RAID technology cannot be used in some specific systems to achieve data backup

[0012] One of the main reasons for this situation is that first of all, RAID technology uses PCI bus, SCSI bus or local bus to generate read and write control of the disk array. Compatibility issues and potentially increased system instability; secondly, in some data storage systems, the local bus is not open, the system does not provide PCI expansion ports, nor does it provide SCSI expansion ports, only on an ATA interface , hang a hard disk, at this time the system cannot use RAID technology to achieve disk data backup

Images