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Memory, control method thereof and storage system

A memory and storage area technology, applied in the storage field, can solve problems such as reduced read and write performance and limited space

Pending Publication Date: 2021-03-16
合肥康芯威存储技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For DRAM-Less SSDs, since cache resources are limited, and part of the cache needs to be reserved for data reading and writing, physical space management, and code execution, the space allocated to the mapping relationship is very limited, which leads to Reduced read and write performance

Method used

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  • Memory, control method thereof and storage system
  • Memory, control method thereof and storage system
  • Memory, control method thereof and storage system

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Embodiment Construction

[0048] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0049] It should be noted that the diagrams provided in this embodiment are only schematically illustrating the basic idea of ​​the present invention, and only the components related to the present invention are shown in the diagrams rather than the number, shape and shape of the components in actual implementation. Dimensional drawing, the type, quantity and proportion of each component can be changed arbitrarily during actual implementation, and the componen...

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Abstract

The invention provides a Memory, control method thereof and storage system, and the memory comprises a storage area which comprises a first-level mapping table, wherein the first-level mapping table comprises a plurality of logic address segments, and the logic address segments correspond to storage space in the storage area; the cache area which comprises a secondary mapping table and a dynamic mapping table, wherein the secondary mapping table comprises a plurality of static mapping units, each static mapping unit corresponds to one logic address segment, each static mapping unit comprises azone bit and a physical address segment, and each physical address segment corresponds to one logic address segment; wherein each physical address segment is used for indexing a mapping relationshipin the logic address segment, the flag bit comprises a first state, and the dynamic mapping table comprises a plurality of dynamic mapping units. The memory provided by the invention can improve the read-write performance.

Description

technical field [0001] The invention relates to the technical field of storage, in particular to a storage, a control method thereof, and a storage system. Background technique [0002] Today, in the solid-state drive (SSD) consumer market, the price of solid-state drives has gradually approached the price of traditional mechanical hard drives. In order to further reduce the cost of solid-state drives, the current consumer-grade solid-state drives have gradually evolved from the original architecture design of external DRAM (Dynamic Random Access Memory) to the architecture design of no external DRAM. The advantage of this design is that the entire SSD can save the price of one or more DRAMs, further reducing the cost of the SSD. [0003] For DRAM-Less SSDs, since cache resources are limited, and part of the cache needs to be reserved for data reading and writing, physical space management, and code execution, the space allocated to the mapping relationship is very limited,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F12/0873G06F12/0877G06F12/02
CPCG06F12/0873G06F12/0877G06F12/023G06F2212/1024G06F2212/2022
Inventor 陈文涛
Owner 合肥康芯威存储技术有限公司
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