WO2023138264A1 - 一种ssd数据管理方法及相关组件 - Google Patents
一种ssd数据管理方法及相关组件 Download PDFInfo
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- WO2023138264A1 WO2023138264A1 PCT/CN2022/138772 CN2022138772W WO2023138264A1 WO 2023138264 A1 WO2023138264 A1 WO 2023138264A1 CN 2022138772 W CN2022138772 W CN 2022138772W WO 2023138264 A1 WO2023138264 A1 WO 2023138264A1
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
- G06F3/0614—Improving the reliability of storage systems
- G06F3/0616—Improving the reliability of storage systems in relation to life time, e.g. increasing Mean Time Between Failures [MTBF]
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
- G06F3/0646—Horizontal data movement in storage systems, i.e. moving data in between storage devices or systems
- G06F3/0647—Migration mechanisms
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0668—Interfaces specially adapted for storage systems adopting a particular infrastructure
- G06F3/0671—In-line storage system
- G06F3/0683—Plurality of storage devices
- G06F3/0689—Disk arrays, e.g. RAID, JBOD
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
Definitions
- the present application relates to the field of storage array management, in particular to an SSD data management method and related components.
- SSD Solid State Disk, solid state drive
- the SSD will write the new data to the new physical location, and the old data that has been written will no longer be valid.
- you want to write new data on the physical location of the old data that has been written you need to erase the old data that has been written first. Therefore, it is necessary to write the old data that has not been replaced and written in the old data that has been erased to a new physical location in the SSD and then write new data.
- the purpose of this application is to provide a SSD data management method, system, device, storage array and computer-readable storage medium, which reduces the write amplification of SSD, that is, reduces the loss of SSD, and prolongs the life of SSD.
- the present application provides a SSD data management method, which is applied to a storage array.
- the storage array includes multiple SSDs.
- the SSD data management method includes:
- the current health of the SSD and the relationship between the health of the preset SSD and the maximum amount of data allowed to be saved by the SSD determine the maximum amount of data that the SSD is currently allowed to save; the health of the SSD and the maximum amount of data allowed to be saved by the SSD are positively correlated or when the health of the SSD increases, the maximum amount of data that the SSD allows to be saved increases in steps;
- the SSD migrate some data in the SSD to other SSDs in the storage array until the amount of data currently stored by the SSD is not greater than the maximum amount of data currently allowed by the SSD.
- determining the current health of the SSD includes:
- determining the current health of the SSD includes:
- the maximum amount of data currently allowed to be stored by the SSD is determined.
- the SSD after determining the amount of data currently stored by the SSD, it also includes:
- the SSD If the amount of data currently saved by the SSD is not less than the maximum amount of data currently allowed to be saved by the SSD, write the requested data into other SSDs; if the amount of data currently saved by the SSD is less than the maximum amount of data currently allowed by the SSD, then allow the requested data to be written into the SSD.
- the SSD after determining that the amount of data currently stored by the SSD is not less than the maximum amount of data currently allowed to be stored by the SSD, it further includes:
- the current health of the SSD after determining the current health of the SSD, it also includes:
- migrating data in the SSD to other SSDs until the amount of data currently stored by the SSD is not greater than the maximum amount of data currently allowed to be saved by the SSD includes:
- the application also provides a SSD data management system, including:
- the SSD current health degree determination unit is used to determine the current health degree of the SSD
- the maximum amount of data currently allowed to be saved by the SSD is determined by a unit for determining the maximum amount of data that the SSD is currently allowed to save according to the current health of the SSD and the relationship between the health of the preset SSD and the maximum amount of data allowed to be saved by the SSD; when the health of the SSD and the maximum amount of data allowed to be saved by the SSD are positively correlated or when the health of the SSD increases, the maximum amount of data that the SSD allows to be saved increases stepwise;
- the amount of data currently stored in the SSD is determined by a unit for determining the amount of data currently stored in the SSD;
- the data volume judging unit currently stored by the SSD is used to determine whether the data volume currently stored by the SSD is greater than the maximum data volume currently allowed to be stored by the SSD, and if greater, triggers the SSD data migration unit;
- the SSD data migration unit is used to migrate part of the data in the SSD to other SSDs in the storage array until the amount of data currently stored by the SSD is not greater than the maximum amount of data currently allowed to be stored by the SSD.
- the application also provides a SSD data management device, including:
- the processor is configured to implement the steps of the above SSD data management method when executing the computer program.
- the present application also provides a storage array, including multiple SSDs and the above-mentioned SSD data management device.
- the present application provides an SSD data management method, system, device, and storage array. Based on the principle that the size of the write amplification is negatively correlated with the size of the remaining space of the SSD, the maximum amount of data currently allowed to be stored by the SSD is determined according to the current health of the SSD and the corresponding relationship between the health of the preset SSD and the maximum amount of data allowed to be stored by the SSD. The amount of saved data will also decrease, or decrease in a stepwise manner. Since the remaining space of the SSD is increased, the write amplification of the SSD is reduced, that is, the loss of the SSD is reduced, the life of the SSD is extended, and the reliability of the data in the SSD is improved to avoid data loss.
- Fig. 1 is the flowchart of a kind of SSD data management method that the present application provides
- Fig. 2 is a schematic structural diagram of a SSD data management system provided by the present application.
- FIG. 3 is a schematic structural diagram of an SSD data management device provided in the present application.
- the core of the present application is to provide an SSD data management method, system, device and storage array, which reduce the write amplification of the SSD, that is, reduce the loss of the SSD, and prolong the life of the SSD.
- FIG. 1 is a flowchart of an SSD data management method provided by the present application.
- the SSD data management method includes:
- the write amplification should be reduced, so that when writing data, the write amplification is small, and the loss to the SSD with low health is also small, in order to achieve the effect of extending the life of the SSD. Therefore, in some embodiments, it is necessary to first determine the current health of the SSD, so as to reduce write amplification according to the current health of the SSD.
- the health of the SSD may be the corresponding response time of I/O on the SSD, or the frequency of data error correction inside the SSD, and the remaining life of the SSD, etc., which are not specifically limited in some embodiments.
- S2 According to the current health of the SSD and the relationship between the health of the preset SSD and the maximum amount of data allowed to be saved by the SSD, determine the maximum amount of data that the SSD is currently allowed to save; the health of the SSD and the maximum amount of data allowed to be saved by the SSD are positively correlated or when the health of the SSD increases, the maximum amount of data that the SSD allows to be saved increases in steps;
- the maximum amount of data currently allowed to be stored by the SSD will be determined according to the current health of the SSD and the corresponding relationship between the health of the preset SSD and the maximum amount of data allowed to be stored by the SSD.
- the maximum amount of data currently allowed to be saved will be less, so that when writing data to the SSD, the loss caused by write amplification will be smaller, and when the current health of the SSD is low, it will help prolong the life of the SSD.
- the amount of data currently stored by the SSD may have exceeded the maximum amount of data currently allowed to be stored by the SSD, it is necessary to migrate some data of the SSD whose amount of data currently stored exceeds the maximum amount of data currently allowed by the SSD. Therefore, in some embodiments, the amount of data currently stored by the SSD will also be determined, so as to migrate the data in the SSD when the amount of data currently stored by the SSD is too large.
- some data in the SSD will be migrated to other SSDs in the storage array until the amount of data currently stored in the SSD is not greater than the maximum amount of data that the SSD is currently allowed to store.
- the SSD data management method can also be used in the case of multiple SSD groups RAID (Redundant Arrays of Independent Disks, redundant array of independent disks).
- RAID Redundant Arrays of Independent Disks, redundant array of independent disks.
- the lower the health of the SSD the higher the possibility of failure.
- the data on the failed SSD can be restored to other SSDs in the RAID through data reconstruction.
- the possibility of failure of other SSDs in the RAID will increase before the data reconstruction is completed.
- the amount of data stored will be relatively small.
- the operation of migrating some data in the SSD to other SSDs in the storage array can be implemented, but not limited to, through a storage pool or a storage volume.
- the maximum amount of data currently allowed to be stored in the SSD is determined according to the current health of the SSD and the relationship between the health of the preset SSD and the maximum amount of data allowed to be stored in the SSD, and when the amount of data currently stored in the SSD is greater than the maximum amount of data currently allowed to be stored in the SSD, part of the data in the SSD is migrated until the amount of data currently stored in the SSD is not greater than the maximum amount of data currently allowed to be stored in the SSD, so that when the health of the SSD is low, the amount of data stored in the SSD will also decrease, or decrease in steps.
- the write amplification of the SSD reduces the loss of the SSD, prolongs the life of the SSD, and improves the reliability of the data in the SSD to avoid data loss.
- determining the current health of the SSD includes:
- the current health degree of the SSD is periodically determined. For example, determine the current health of the SSD every month.
- determining the current health of the SSD includes:
- the maximum amount of data currently allowed to be stored by the SSD is determined.
- the current health of the SSD is determined by determining the current remaining life of the SSD
- the maximum amount of data currently allowed to be stored by the SSD is determined by the correspondence between the current remaining life of the SSD and the preset remaining life of the SSD and the maximum amount of data allowed to be saved by the SSD.
- the SSD after determining the amount of data currently stored by the SSD, it also includes:
- the SSD If the amount of data currently saved by the SSD is not less than the maximum amount of data currently allowed to be saved by the SSD, write the requested data into other SSDs; if the amount of data currently saved by the SSD is less than the maximum amount of data currently allowed by the SSD, then allow the requested data to be written into the SSD.
- the amount of data currently stored in the SSD will be greater than the maximum amount of data currently allowed to be stored in the SSD, which increases write amplification and is not conducive to prolonging the life of the SSD. Therefore, in some embodiments, after determining the amount of data currently stored by the SSD, when a data write request is received, it will be determined whether the amount of data currently stored by the SSD is less than the maximum amount of data currently allowed to be stored by the SSD.
- the SSD after determining that the amount of data currently stored by the SSD is not less than the maximum amount of data currently allowed to be stored by the SSD, it further includes:
- the current health of the SSD after determining the current health of the SSD, it also includes:
- the possibility of failure will be very high. Therefore, in some embodiments, when the current health of the SSD is lower than the preset health level, the user is prompted that the current health of the SSD is too low, so that the user can replace the SSD whose health is lower than the preset health level.
- migrating data in the SSD to other SSDs until the amount of data currently stored by the SSD is not greater than the maximum amount of data currently allowed to be saved by the SSD includes:
- the amount of data currently stored in other SSDs may exceed the maximum amount of data currently allowed to be stored in other SSDs. For example, before data migration, the amount of data currently stored in other SSDs is 60%, and the maximum amount of data currently allowed to be stored is 70%. .
- the amount of data that should be migrated by the SSD will be calculated first, that is, the portion of the currently stored data that exceeds the currently allowed data amount to be saved, and the current remaining data amount that is allowed to be saved by other SDDs, that is, the difference between the currently saved data amount and the current maximum data amount that is allowed to be saved, and then judge whether the current data amount that is currently stored in other SSDs will exceed the current maximum data amount that other SSDs are allowed to save after transferring some of the data in the SSD to other SSDs.
- Migrating part of the data in the SSD to other SSDs ensures the stability of the data in the other SSDs and helps prolong the life of the other SSDs.
- FIG. 2 is a schematic structural diagram of an SSD data management system provided by the present application.
- the application also provides a SSD data management system, including:
- SSD current health degree determination unit 21 for determining the current health degree of SSD
- SSD currently allows the maximum amount of data to be saved determining unit 22, which is used to determine the maximum amount of data that SSD is currently allowed to save according to the current health of SSD and the relationship between the health of the preset SSD and the maximum amount of data that SSD allows to save; when the health of SSD and the maximum amount of data that SSD allows to save are positively correlated or when the health of SSD increases, the maximum amount of data that SSD allows to save increases stepwise;
- the amount of data currently preserved by the SSD determining unit 23 is used to determine the amount of data currently preserved by the SSD;
- the amount of data judging unit 24 that SSD currently preserves is used for judging whether the amount of data currently preserved by SSD is greater than the maximum amount of data that SSD currently allows to preserve, if greater, then triggers SSD data migration unit 25;
- the SSD data migration unit 25 is used to migrate part of the data in the SSD to other SSDs in the storage array until the amount of data currently stored by the SSD is not greater than the maximum amount of data currently allowed to be stored by the SSD.
- FIG. 3 is a schematic structural diagram of an SSD data management device provided by the present application.
- the application also provides a SSD data management device, including:
- memory 31 for storing computer programs
- the processor 32 is configured to implement the steps of the above SSD data management method when executing the computer program.
- the present application also provides a storage array, including multiple SSDs and the above-mentioned SSD data management device.
- each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other.
- the description is relatively simple, and for relevant details, please refer to the description of the method part.
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Abstract
Description
Claims (20)
- 一种SSD数据管理方法,应用于存储阵列,其特征在于,所述存储阵列中包括多个SSD,所述SSD数据管理方法包括:确定SSD当前的健康度;根据所述SSD当前的健康度和预设SSD的健康度与SSD允许保存的最大数据量的对应关系确定所述SSD当前允许保存的最大数据量;所述SSD的健康度和所述SSD允许保存的最大数据量为正相关或所述SSD的健康度增大时,所述SSD允许保存的最大数据量呈阶梯式增大;确定所述SSD当前保存的数据量;若所述SSD当前保存的数据量大于所述SSD当前允许保存的最大数据量,则迁移所述SSD中的部分数据到所述存储阵列中的其它SSD中直到所述SSD当前保存的数据量不大于所述SSD当前允许保存的最大数据量。
- 如权利要求1所述的SSD数据管理方法,其特征在于,迁移所述SSD中的部分数据到所述存储阵列中的其它SSD中,包括:通过存储池迁移所述SSD中的部分数据到所述存储阵列中的其它SSD中。
- 如权利要求1所述的SSD数据管理方法,其特征在于,迁移所述SSD中的部分数据到所述存储阵列中的其它SSD中,包括:通过存储卷迁移所述SSD中的部分数据到所述存储阵列中的其它SSD中。
- 如权利要求1所述的SSD数据管理方法,其特征在于,确定SSD当前的健康度,包括:周期性的确定所述SSD当前的健康度。
- 如权利要求1所述的SSD数据管理方法,其特征在于,周期性的确定所述SSD当前的健康度,包括:每一个月确定一次所述SSD当前的健康度。
- 如权利要求1所述的SSD数据管理方法,其特征在于,确定SSD当前的健康度包括:确定所述SSD当前的剩余寿命;根据所述SSD当前的健康度和预设SSD的健康度与SSD允许保存的最大数据量的对应关系确定所述SSD当前允许保存的最大数据量,包括:根据所述SSD当前的剩余寿命和预设SSD的剩余寿命与SSD允许保存的最大数据量的对应关系确定所述SSD当前允许保存的最大数据量。
- 如权利要求6所述的SSD数据管理方法,其特征在于,确定所述SSD当前的剩余寿命之后,还包括:建立所述SSD当前的剩余寿命与SSD的可靠等级的对应关系;根据所述SSD的可靠等级与SSD允许保存的最大数据量的对应关系确定所述SSD当前允许保存的最大数据量。
- 如权利要求7所述的SSD数据管理方法,其特征在于,所述SSD当前的剩余寿命与SSD的可靠等级的对应关系包括:所述SSD的当前剩余寿命≥60%时,所述SSD的可靠等级为一级可靠、所述SSD的当前剩余寿命≥50%时,所述SSD的可靠等级为二级可靠、所述SSD的当前剩余寿命≥40%时,所述SSD的可靠等级为三级可靠、所述SSD的当前剩余寿命≥30%时,所述SSD的可靠等级为四级可靠、所述SSD的当前剩余寿命≤30%时,所述SSD的可靠等级为五级可靠。
- 如权利要求8所述的SSD数据管理方法,其特征在于,所述SSD的可靠等级与SSD允许保存的最大数据量的对应关系包括:所述SSD的可靠等级为一级可靠时,所述SSD当前允许保存的最大数据量为100%、所述SSD的可靠等级为二级可靠时,所述SSD当前允许保存的最大数据量为90%、所述SSD的可靠等级为三级可靠时,所述SSD当前允许保存的最大数据量为80%、所述SSD的可靠等级为四级可靠时,所述SSD当前允许保存的最大数据量为70%、所述SSD的可靠等级为五级可靠时,所述SSD当前允许保存的最大数据量为60%、
- 如权利要求1所述的SSD数据管理方法,其特征在于,确定所述SSD当前保存的数据量之后,还包括:在接收到数据写入请求时,判断所述SSD当前保存的数据量是否小于所述SSD当前允许保存的最大数据量;若所述SSD当前保存的数据量不小于所述SSD当前允许保存的最大数据量,将请求写入的数据写入所述其它SSD中,若所述SSD当前保存的数据量小于所述SSD当前允许保存的最大数据量,则允许将请求写入的数据写入所述SSD中。
- 如权利要求10所述的SSD数据管理方法,其特征在于,在判定所述SSD当前保存的数据量不小于所述SSD当前允许保存的最大数据量之后,还包括:若检测到用户已删除所述SSD的剩余数据中的部分数据且所述SSD当前保存的数据量小于所述SSD当前允许保存的最大数据量,在接收到所述数据写入请求时,则允许将请求写入的数据写入所述SSD中。
- 如权利要求1所述的SSD数据管理方法,其特征在于,确定SSD当前的健康度 之后,还包括:在所述SSD当前的健康度低于预设健康度时,提示用户所述SSD当前的健康度过低。
- 如权利要求12所述的SSD数据管理方法,其特征在于,在所述SSD当前的健康度低于预设健康度时,提示用户所述SSD当前的健康度过低,包括:在所述SSD的当前健康度低于20%时,通过存储阵列中的显示器弹窗的方式提示用户所述SSD的健康度过低。
- 如权利要求1所述的SSD数据管理方法,其特征在于,还包括:当所述SSD发生故障时,通过数据重构将故障的所述SSD上的数据恢复到存储阵列的其它SSD中。
- 如权利要求1所述的SSD数据管理方法,其特征在于,确定SSD当前的健康度包括:确定所述SSD当前I/O的相应响应时间。
- 如权利要求1所述的SSD数据管理方法,其特征在于,确定SSD当前的健康度包括:确定所述SSD当前内部发生数据纠错的频率。
- 如权利要求1至16任一项所述的SSD数据管理方法,其特征在于,迁移所述SSD中的数据到其它SSD中直到SSD当前保存的数据量不大于所述SSD当前允许保存的最大数据量,包括:根据所述预设SSD的健康度与SSD允许保存的最大数据量的对应关系确定所述其它SSD当前允许保存的最大数据量;确定所述其它SSD当前保存的数据量;根据所述其它SSD当前保存的数据量和所述其它SSD当前允许保存的最大数据量确定所述其它SSD当前剩余允许保存的数据量;根据所述SSD当前允许保存的最大数据量和所述SSD当前保存的数据量确定所述SSD当前应迁移的数据量;在所述SSD当前应迁移的数据量不大于所述其它SSD当前剩余允许保存的数据量时,迁移所述SSD中的部分数据到所述其它SSD中直到所述SSD当前保存的数据量不大于所述SSD当前允许保存的最大数据量。
- 一种SSD数据管理系统,其特征在于,包括:SSD当前健康度确定单元,用于确定SSD当前的健康度;SSD当前允许保存的最大数据量确定单元,用于根据所述SSD当前的健康度和预设SSD的健康度与SSD允许保存的最大数据量的对应关系确定所述SSD当前允许保存的最大数据量;所述SSD的健康度和所述SSD允许保存的最大数据量为正相关或所述SSD的健康度增大时,所述SSD允许保存的最大数据量呈阶梯式增大;SSD当前保存的数据量确定单元,用于确定所述SSD当前保存的数据量;SSD当前保存的数据量判断单元,用于判断所述SSD当前保存的数据量是否大于所述SSD当前允许保存的最大数据量,若大于,则触发SSD数据迁移单元;所述SSD数据迁移单元,用于迁移所述SSD中的部分数据到所述存储阵列中的其它SSD中直到所述SSD当前保存的数据量不大于所述SSD当前允许保存的最大数据量。
- 一种SSD数据管理设备,其特征在于,包括:存储器,用于存储计算机程序;处理器,用于执行所述计算机程序时实现如权利要求1至17任一项所述SSD数据管理方法的步骤。
- 一种存储阵列,其特征在于,包括多个SSD以及如权利要求19所述的SSD数据管理设备。
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210073296.4 | 2022-01-21 | ||
| CN202210073296.4A CN114489504B (zh) | 2022-01-21 | 2022-01-21 | 一种ssd数据管理方法及相关组件 |
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| CN110968524A (zh) * | 2019-12-09 | 2020-04-07 | Oppo广东移动通信有限公司 | 数据存储控制方法、装置、存储介质及电子装置 |
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| CN103688248B (zh) * | 2013-06-29 | 2015-09-30 | 华为技术有限公司 | 一种存储阵列的管理方法、装置和控制器 |
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| JP6318173B2 (ja) * | 2013-09-24 | 2018-04-25 | 華為技術有限公司Huawei Technologies Co.,Ltd. | データマイグレーション方法、データマイグレーション装置及びストレージデバイス |
| US9652160B1 (en) * | 2015-11-06 | 2017-05-16 | Datadirect Networks, Inc. | Method and system for data migration between high performance computing entities and a data storage supported by a de-clustered raid (DCR) architecture with I/O activity dynamically controlled based on remaining health of data storage devices |
| CN105760553A (zh) * | 2016-03-25 | 2016-07-13 | 北京奇虎科技有限公司 | 数据管理方法和装置 |
| CN108089814B (zh) * | 2016-11-23 | 2021-04-06 | 中移(苏州)软件技术有限公司 | 一种数据存储方法及装置 |
| CN112256193A (zh) * | 2020-09-16 | 2021-01-22 | 浙江大华存储科技有限公司 | 一种提高固态硬盘数据安全性的方法、装置和存储介质 |
| CN113362879B (zh) * | 2021-04-19 | 2022-08-09 | 浙江大华存储科技有限公司 | 一种固态硬盘寿命的预测方法、装置和可读存储介质 |
| CN113361208B (zh) * | 2021-07-02 | 2023-07-18 | 中国科学院空间应用工程与技术中心 | 基于综合健康指标的固态硬盘剩余寿命评估方法 |
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| US20210223955A1 (en) * | 2017-10-26 | 2021-07-22 | EMC IP Holding Company LLC | Using recurring write quotas to optimize utilization of solid state storage in a hybrid storage array |
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