Hybrid storage system

Abstract

The invention discloses a hybrid storage system, which belongs to the field of computer storage and is used for solving the problems of high system complexity and high cost due to the need of a plurality of controllers and single storage medium controlled by each controller existing in the conventional mixed storage system. The hybrid storage system consists of N storages and a controller, wherein each storage comprises a controller communication module, a storage medium and a storage information module; and the controller comprises a host communication module, a load control module, an array control module, an address mapping module, a storage control module and a buffer. The controller can be used for identifying reading and writing requests reaching a host and judging the cold and hot degree and magnitude of the writing request to perform load control so as to realize hybrid storage of multiple types of storages. The storage is a storage medium chip as well as a simple information storage chip, so that the replacement cost of the hybrid storage system is reduced; and data recovery is performed by using the array control module in the controller, so that the performance of the hybrid storage system is enhanced, the service life of the hybrid storage system is prolonged, and the establishment and use costs of the hybrid storage system are reduced.

Description

technical field

[0001] The invention belongs to the field of computer storage, and in particular relates to a hybrid storage system. Background technique

[0002] Storage system is an important part of computer system. In recent decades, all fields of computer hardware technology have been developing rapidly. The performance of processors and memory capacity have increased by nearly a thousand times, and the speed and capacity of storage have also continued to increase. However, due to the limitations of traditional mechanical hard drives, making It is becoming more and more difficult to increase the reading and writing speed of hard disks, and the bottleneck of storage systems is becoming more and more prominent.

[0003] Flash memory (FLASH Memory) is an electrically erasable non-volatile semiconductor memory, especially non-type flash memory (NAND FLASH) has the advantages of high storage density, low power consumption and good shock resistance, so solid-state memory bas...

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