Mixed memory data backup system and method

Abstract

The invention relates to the technical field of computers, in particular to a mixed memory data backup system and method. The system is applied to the storage of data of a dynamic random access memory (DRAM) into a non-volatile memory. The system comprises: a user configuration module, used for selecting to-be-backed-up data from the data, carrying out priority determination on the to-be-backed-up data, determining a backup order of the to-be-backed-up data according to priority determination, generating state information of the to-be-backed-up data and sending the state information; a DRAM module, which is connected to the user configuration module, and dynamically and randomly accesses the data; a TABLE module, which is connected to the DRAM module and the user configuration module, and stores the state information of the to-be-backed-up data in the DRAM module; an NVM module, which is used to backup partial data and carry out nonvolatile storage on the partial data; and a controller, which is connected to the DRAM module, the NVM module and the TABLE module, and stores the data from the DRAM module to the NVM module according to the state information of the to-be-backed-up data in the DRAM module in the TABLE module.

Description

technical field [0001] The invention relates to the technical field of computers, in particular to a hybrid memory data backup system and method. Background technique [0002] Important data such as calculation results and service information are stored in the server of the computer. These data are generally stored temporarily in the cache or memory. These data are very important for enterprise-level servers and often fail when the power is off. Therefore, when the power is off, timely backup of the above data is a problem worth studying in the field of communication. [0003] Currently for servers, South Bridge is one of the two chips in the Intel processor-based PC motherboard chipset. figure 1 It is a structural schematic diagram of the data backup Redundant Array of Independent Disks (RAID) memory involved in the South Bridge in the prior art, wherein the DRAM (Dynamic Random Access Memory, Dynamic Random Access Memory (Storage) cache is to reduce the central processing...

AI Technical Summary

Problems solved by technology

NANDFLASH memory has the advantages of large capacity and fast rewriting speed. It is suitable for storing a large amount of data, but it does not care about the data content in DRAM when backing up. All data in DRAM is backed up to NANDFLASH.

With the increase of DRAM capacity, the backup time of this data backup method also increases, and the FLASH capacity also increases, and the capacity requirements for supercapacitors are also higher. Therefore, compared with ordinary DRAM memory, the cost is greatly increased.

Therefore, the hybrid memory structure in the prior art has high requirements on the capacity of the capacitor, and its use has relatively large limitations.

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