Data storage method and device
A storage device and data technology, applied in the input/output process of digital memory information, information storage, data processing, etc., can solve the problems affecting the service life of SSD and high storage cost, improve read and write performance, reduce TCO, extend the The effect of service life
Active Publication Date: 2019-03-19
SAMSUNG (CHINA) SEMICONDUCTOR CO LTD +1
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Problems solved by technology
[0006] The purpose of the present invention is to provide a data storage method and device to solve the technical problem that the storage cost of the existing SSD storage technology is relatively high and affects the service life of the SSD
Method used
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Embodiment Construction
[0036] Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
[0037] figure 1 is a flowchart illustrating a data storage method according to an embodiment of the present invention.
[0038] In step S10, the read and write data information of each logical block of the storage device for a predetermined number of historical periods before the current time is acquired.
[0039] The storage device may be a solid state disk, or a server including multiple solid state disks, or a cluster including multiple servers.
[0040] The logical chunk (chunk) refers to an area where a segment of continuous logical addresses in the available storage space of the storage device is located.
[0041] As an example, the read and write data information of each logical block in each historical period includes: the number of reads and writes of each logical block in each historical period, the number of reads and writes of each logical ...
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The invention provides a data storage method and device. The storage method comprises the following steps of: obtaining read-write data information of each logic block of the storage device in a predetermined number of historical periods before the current moment, and predicting the read-write data information of each logic block in the next period according to the read-write data information of each logic block in the predetermined number of historical periods before the current moment and the data prediction model; determining a physical storage area of each logic block in the next time period according to the predicted read-write data information of each logic block in the next time period; and in the next time period, when a write-in request is received, writing data corresponding to the write-in request into a physical storage area of a logic block corresponding to the write-in request in the next time period. According to the invention, the service life of the storage equipment can be prolonged, and the read-write performance is improved, so that the overall TCO is reduced.
Description
technical field [0001] The present invention relates to the field of data storage, and more specifically, to a data storage method and device. Background technique [0002] At present, storage technologies for SSDs (Solid State Drives, solid state drives) mainly include two types: storage tiering technology (Storage Tiering) and multi-stream (Multi-Stream) storage technology. [0003] Hierarchical storage technology provides a solution for mixed use of HDD (Hard Disk Drive, mechanical hard disk) and SSD. It implements data storage in different performance storage media based on simple cold and hot classification of read and write data. Hierarchical storage technology is relatively simple to classify hot and cold data, and it is a static and general method. [0004] The multi-stream storage technology controls where data is written inside the SSD by specifying a stream address (Stream ID) for the data request. Multi-stream storage technology allocates stream addresses at th...
Claims
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IPC IPC(8): G06F3/06
CPCG06F3/061G06F3/0616G06F3/0635G06F3/0638G06F3/0653G06F3/0679G06F3/064G06F3/0611G06F3/0619G06F3/0659G06F3/0683G11C11/409
Inventor夏巍杨攀金东建
OwnerSAMSUNG (CHINA) SEMICONDUCTOR CO LTD