Hybrid memory system and management method thereof

Abstract

The invention provides a hybrid memory system which comprises a random storage medium and a non-volatile storage medium. Address encoding is carried out by adopting a unified encoding mode; the non-volatile storage medium is used for storing original data; the random storage medium comprises a write cache unit which is used for mirror image cache of the non-volatile storage medium; and the hybrid memory system also comprises a data index unit for indexing data of the write cache unit, a data check unit for comparing and checking the read or written data and the data stored in the write cache unit, and a data migration unit. The invention further provides a corresponding management method of the hybrid memory system. Through the system and the method, the random storage medium and the non-volatile storage medium exert respective advantages at the same time, a high-efficiency read-write strategy and a data migration mechanism can be achieved, and meanwhile, the read-write reliability can be ensured.

Description

technical field [0001] The invention belongs to the technical field of computer data storage, and in particular relates to a hybrid memory system and a management method thereof. Background technique [0002] According to Moore's Law, computing speed doubles every 18 months, but the development of memory technology has hit a bottleneck, resulting in a huge gap. The existing random access memory (RAM), the traditional memory technology represented by dynamic random access memory (DRAM), due to the limitation of the process, the microscopic characteristics of electrons are becoming more and more obvious, coupled with the constraints of its own physical characteristics. DRAM is a volatile memory. If you want to save the data in it, it must be continuously charged, and it needs to be refreshed dynamically when in use, which leads to difficulties in terms of delay, power consumption, and reliability. [0003] In recent years, the rise and development of new non-volatile memory (...

AI Technical Summary

Problems solved by technology

Although this system can achieve good results, but it involves too many data structures, the energy consumption is relatively large, and the reliability of the data cannot be guaranteed

In 2013, "A Hybrid Memory System Access Hotspot Control Method" in the "Microelectronics and Computer" magazine proposed an effective strategy based on memory access hotspot control. Although it can increase the service life of PCM, the read and write distribution has a negative impact on DRAM. Area occupancy is high and reliability aspects are not considered

Although this system can achieve good results, but it involves too many data structures, the energy consumption is relatively large, and the reliability of the data cannot be guaranteed

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