CN102393809A - Method for prolonging service life of cloud storage SSD (Solid State Disk) device - Google Patents
Method for prolonging service life of cloud storage SSD (Solid State Disk) device Download PDFInfo
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- CN102393809A CN102393809A CN2011103940388A CN201110394038A CN102393809A CN 102393809 A CN102393809 A CN 102393809A CN 2011103940388 A CN2011103940388 A CN 2011103940388A CN 201110394038 A CN201110394038 A CN 201110394038A CN 102393809 A CN102393809 A CN 102393809A
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Abstract
The invention discloses a method for prolonging the service life of a cloud storage SSD (Solid State Disk) device. All the SSDs in a cloud storage SSD array are brought into a write equalization strategy so as to prolong the service life of the array. A NandFlash on the SSD in the array is independently divided into the same Bank with the NandFlashes corresponding to other SSDs in the array, thus the storage array is divided into a storage device composed of a plurality of Banks; and a wear equalization algorithm is used among the Banks, and the NandFlashes in each bank are all from different SSDs in the array, so that the SSD devices on the array can be in write equalization, and the service life of the storage device is further prolonged.
Description
Technical field
This patent relates to a kind of cloud field of storage, is specifically related to a kind of method that improves cloud storage SSD service life of equipment.
Background technology
Along with cloud computing is fast-developing, the raising of the storage speed of cloud computing data and safety is just very necessary.SSD is because its storage medium is NandFlash, so it has just had similar advantage with NandFlash: light, storage density is big, low in energy consumption, antidetonation and temperature adaptation wide ranges, storage speed is fast.Therefore, SSD as the cloud memory device, can be improved storage speed and antidetonation high temperature resistance.
But NandFlash is because the characteristics of self technology, must carry out erase operation earlier before writing data, and erase operation can reduce the serviceable life of NandFlash.For example, the Block erasing times among the NandFlash of MLC is generally 5000 times.Therefore, SSD generally all uses the algorithm of abrasion equilibrium to make that the Block erasing times of NandFlash is average, thereby improves equipment life.
And for storage array, every SSD is carried out abrasion equilibrium obviously can not reach the serviceable life of improving whole array, therefore, need carry out abrasion equilibrium to whole array.
Summary of the invention
The purpose of this invention is to provide a kind of method that improves cloud storage SSD service life of equipment.
The objective of the invention is to realize that by following mode step is following:
1) with cloud store solid-state hard disk SSD (Solid State Disk) array in all solid-state hard disk SSD include in and write balanced strategy, make array improve serviceable life;
2) NandFlash on the array solid-state hard disk SSD is divided among the same Bank (memory bank) with the corresponding NandFlash of other solid-state hard disk SSD of array separately, storage array just is divided into the memory device of being made up of a plurality of Bank like this;
3) adopt the algorithm of abrasion equilibrium between the Bank, because the NandFlash among each Bank is all from the different solid-state hard disk SSD on the array, thus can make on the array solid-state hard disk SSD equipment write equilibrium, thus memory device serviceable life improved.
The invention has the beneficial effects as follows: system does not increase the additional hardware resource, thereby, have good value for applications.
Description of drawings
Fig. 1 is a kind of example block diagram that improves the method for cloud storage SSD service life of equipment.
Embodiment
Explanation at length below with reference to Figure of description the method for raising cloud of the present invention storage SSD service life of equipment being done.
Like Fig. 1, system is made up of system and SSD array.4 SSD of supposing the system carry are respectively SSD-1, SSD-2, SSD-3 and SSD-4.Every SSD is made up of 4 NandFlash, is respectively A, B, C and D.16 NandFlash are pressed ABCD divide into groups, be divided into 4 BANK, be respectively BANK-A, BANK-B, BANK-C and BANK-D.Use the write operation of 4 BANK of tactical management of abrasion equilibrium, make the erasing times balance of each BANK, thereby to reach the balance of writing of whole storage array because all comprise the NandFlash of each SSD among every BANK.
Except that the described technical characterictic of instructions, be the known technology of those skilled in the art.
Claims (1)
1. one kind is improved the method that cloud is stored the SSD service life of equipment, it is characterized in that step is following:
1) with cloud store the solid-state hard disk SSD array in all solid-state hard disk SSD include in and write balanced strategy;
2) the NandFlash particle on the solid-state hard disk SSD in the array is divided among the same memory bank Bank with the corresponding NandFlash particle of other solid-state hard disk SSD of array separately, storage array just is divided into the memory device of being made up of a plurality of memory bank Bank like this;
3) adopt the algorithm of abrasion equilibrium Wear-Leveling between the memory bank Bank,, thereby improve memory device serviceable life because the NandFlash among each memory bank Bank all from the different bank SSD on the array, makes on the array SSD equipment write equilibrium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103940388A CN102393809A (en) | 2011-12-02 | 2011-12-02 | Method for prolonging service life of cloud storage SSD (Solid State Disk) device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011103940388A CN102393809A (en) | 2011-12-02 | 2011-12-02 | Method for prolonging service life of cloud storage SSD (Solid State Disk) device |
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| CN102393809A true CN102393809A (en) | 2012-03-28 |
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| CN2011103940388A Pending CN102393809A (en) | 2011-12-02 | 2011-12-02 | Method for prolonging service life of cloud storage SSD (Solid State Disk) device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104731523A (en) * | 2013-12-24 | 2015-06-24 | 国际商业机器公司 | Method and controller for collaborative management of non-volatile hierarchical storage system |
| CN115934007A (en) * | 2023-03-15 | 2023-04-07 | 浪潮电子信息产业股份有限公司 | Data storage method, system, equipment and storage medium of distributed storage system |
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| CN101419842A (en) * | 2008-11-07 | 2009-04-29 | 成都市华为赛门铁克科技有限公司 | Loss equalizing method, apparatus and system for hard disc |
| KR20100131783A (en) * | 2009-06-08 | 2010-12-16 | 홍익대학교 산학협력단 | Data storage device and method for processing data access request |
| CN102122531A (en) * | 2011-01-27 | 2011-07-13 | 浪潮电子信息产业股份有限公司 | Method for improving stability in use of large-capacity solid state disk |
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2011
- 2011-12-02 CN CN2011103940388A patent/CN102393809A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101419842A (en) * | 2008-11-07 | 2009-04-29 | 成都市华为赛门铁克科技有限公司 | Loss equalizing method, apparatus and system for hard disc |
| KR20100131783A (en) * | 2009-06-08 | 2010-12-16 | 홍익대학교 산학협력단 | Data storage device and method for processing data access request |
| CN102122531A (en) * | 2011-01-27 | 2011-07-13 | 浪潮电子信息产业股份有限公司 | Method for improving stability in use of large-capacity solid state disk |
Non-Patent Citations (1)
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| 谢长生等: "基于片内SRAM的固态硬盘转换层设计", 《计算机科学》, vol. 37, no. 7, 31 July 2010 (2010-07-31), pages 296 - 300 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104731523A (en) * | 2013-12-24 | 2015-06-24 | 国际商业机器公司 | Method and controller for collaborative management of non-volatile hierarchical storage system |
| CN104731523B (en) * | 2013-12-24 | 2018-04-10 | 国际商业机器公司 | The method and its controller of coordinated management in non-volatile hierarchical stor |
| CN115934007A (en) * | 2023-03-15 | 2023-04-07 | 浪潮电子信息产业股份有限公司 | Data storage method, system, equipment and storage medium of distributed storage system |
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Application publication date: 20120328 |