Realization method and device of mixed secondary storage system

Abstract

The invention relates to a realization method and a device of a mixed secondary storage system. The realization method comprises the following steps that: step 1: a file is stored in a disk by default; step 2: if the required file is not in a memory, a flash memory is accessed; if the required file is not in the flash memory, the disk is accessed, and the file is obtained; step 3: if the required file is stored in the disk and the access frequency reaches a preset value, and the required file is cached in the flash memory; and step 4: when the size of the file cached in the flash memory reaches a certain value, some files are selected to be written into the disk. Compared with the prior art, the invention can realize a large-capacity and low-power consumption secondary storage system with low cost.

Description

technical field [0001] The invention relates to the field of computers, in particular to a method and device for realizing a hybrid secondary storage system. Background technique [0002] With the rapid development of social economy, energy supply is difficult to meet the needs of development. While developing new energy, saving energy and protecting the environment have become important tasks for all human beings. In the field of computers leading the information age, low power consumption design has begun to attract people's attention. In battery-operated mobile devices such as notebooks, low-power design is the main way to delay battery life. [0003] In recent decades, magnetic disks have always occupied the main position of computer secondary storage devices, but the mechanical characteristics of magnetic disks cause it to have a large read and write delay, which also makes it a major consumer of battery energy. In order to improve the read and write delay of the disk...

AI Technical Summary

Problems solved by technology

As the frequency of reading and writing of files changes, there are frequent file transfers between Flash and disk. Memory DRAM accesses both Flash and disk, so the number of disk accesses cannot be effectively reduced.

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