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A method to achieve global wear leveling

An evenly distributed, drive-based technology, applied in the field of storage systems, can solve problems such as performance bottlenecks

Active Publication Date: 2021-09-03
MEMBLAZE TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the process of reconstructing data is likely to read data from all other disks, calculate and write the restored data to a new drive, so the new drive will become the performance bottleneck of the data recovery process

Method used

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  • A method to achieve global wear leveling
  • A method to achieve global wear leveling
  • A method to achieve global wear leveling

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Embodiment Construction

[0077] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0078] see figure 1 , figure 1 The architecture of the storage system according to the embodiment of the present invention is shown. A storage system according to the present invention includes a computer or server (collectively referred to as a host) and a plurality of storage devices (eg, drives) coupled to the host. Preferably, the drive is a solid state storage disk (SSD). Optionally, a disk drive may also be included in the embodiment according to the present invention.

[0079] The storage resources provided by each drive are m...

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Abstract

The invention discloses a method and device for creating a storage object in a storage system. The storage system includes a plurality of drivers, and the drivers include a plurality of storage resources. The method includes: randomly selecting N drivers from the plurality of drivers; The driver acquires N shares of idle resources, wherein each of the N drives provides and only provides one copy of idle resources; and uses the N shares of idle resources to create a storage object. The embodiment of the present invention can realize wear balance among multiple drivers, and effectively improve the service life of the drivers.

Description

technical field [0001] The invention relates to the technical field of storage systems, in particular to a method and device for creating storage objects in a storage system. Background technique [0002] Flash storage technology refers to the technology that uses NAND flash memory as a medium to store data, such as solid-state hard disk. Compared with traditional magnetic media, it has the advantages of low power consumption and fast read and write speed. However, the number of writes to the flash memory storage medium is limited, and frequent write operations may cause failures such as an increase in the error rate of data stored on the flash memory and a decrease in reliability. [0003] Existing RAID (Redundant Arrays of Independent Disks, Redundant Array of Independent Disks) technology aggregates multiple physical drives (for example, magnetic disks) into drive (such as storage disk) groups, divides stripes on the drive groups, and each stripe Data protection is prov...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/06
CPCG06F3/0616G06F3/064G06F3/0689
Inventor 刘昌吴忠杰孙守取易正利
Owner MEMBLAZE TECH BEIJING