WO2016008094A1 - 一种数据复制方法、装置以及系统 - Google Patents

一种数据复制方法、装置以及系统 Download PDF

Info

Publication number
WO2016008094A1
WO2016008094A1 PCT/CN2014/082229 CN2014082229W WO2016008094A1 WO 2016008094 A1 WO2016008094 A1 WO 2016008094A1 CN 2014082229 W CN2014082229 W CN 2014082229W WO 2016008094 A1 WO2016008094 A1 WO 2016008094A1
Authority
WO
WIPO (PCT)
Prior art keywords
data
volume
difference data
primary
primary volume
Prior art date
Application number
PCT/CN2014/082229
Other languages
English (en)
French (fr)
Inventor
王秀武
欧阳戟
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201480080641.0A priority Critical patent/CN106537353B/zh
Priority to PCT/CN2014/082229 priority patent/WO2016008094A1/zh
Priority to EP14897806.7A priority patent/EP3163447B1/en
Priority to JP2017500888A priority patent/JP6455898B2/ja
Publication of WO2016008094A1 publication Critical patent/WO2016008094A1/zh
Priority to US15/405,996 priority patent/US11093335B2/en
Priority to US17/381,733 priority patent/US11734119B2/en
Priority to US17/546,319 priority patent/US20220100609A1/en

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/14—Error detection or correction of the data by redundancy in operation
    • G06F11/1402—Saving, restoring, recovering or retrying
    • G06F11/1446—Point-in-time backing up or restoration of persistent data
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/14—Error detection or correction of the data by redundancy in operation
    • G06F11/1402—Saving, restoring, recovering or retrying
    • G06F11/1446—Point-in-time backing up or restoration of persistent data
    • G06F11/1448—Management of the data involved in backup or backup restore
    • G06F11/1451—Management of the data involved in backup or backup restore by selection of backup contents
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/14—Error detection or correction of the data by redundancy in operation
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
    • G06F11/2053—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where persistent mass storage functionality or persistent mass storage control functionality is redundant
    • G06F11/2056—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where persistent mass storage functionality or persistent mass storage control functionality is redundant by mirroring
    • G06F11/2071—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where persistent mass storage functionality or persistent mass storage control functionality is redundant by mirroring using a plurality of controllers
    • G06F11/2074—Asynchronous techniques
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
    • G06F16/27—Replication, distribution or synchronisation of data between databases or within a distributed database system; Distributed database system architectures therefor
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/14—Error detection or correction of the data by redundancy in operation
    • G06F11/1402—Saving, restoring, recovering or retrying
    • G06F11/1446—Point-in-time backing up or restoration of persistent data
    • G06F11/1458—Management of the backup or restore process
    • G06F11/1461—Backup scheduling policy
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/14—Error detection or correction of the data by redundancy in operation
    • G06F11/1402—Saving, restoring, recovering or retrying
    • G06F11/1446—Point-in-time backing up or restoration of persistent data
    • G06F11/1458—Management of the backup or restore process
    • G06F11/1464—Management of the backup or restore process for networked environments
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
    • G06F11/2053—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where persistent mass storage functionality or persistent mass storage control functionality is redundant
    • G06F11/2056—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where persistent mass storage functionality or persistent mass storage control functionality is redundant by mirroring
    • G06F11/2066—Optimisation of the communication load
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2201/00—Indexing scheme relating to error detection, to error correction, and to monitoring
    • G06F2201/84—Using snapshots, i.e. a logical point-in-time copy of the data

Definitions

  • the present invention relates to the field of storage technologies, and in particular, to a data replication method, apparatus, and system.
  • the existing storage system includes: a system host that is the actual producer of the data, a primary storage array that stores and controls the data generated by the system host, and a secondary storage array that stores the backup data of the primary storage array.
  • the primary storage array includes: a primary storage pool as a data storage device and a primary data storage controller that controls data stored in the primary storage pool.
  • the primary storage pool consists of: a primary volume used to receive and store data sent by the system host and a primary volume snapshot volume used to store snapshot data for the primary volume.
  • the slave storage array includes: a slave storage pool as a data storage device and a slave data storage controller that controls data stored from the storage pool.
  • the slave storage pool includes: a slave volume used to receive and store the primary volume backup data and a slave volume snapshot volume used to store snapshot data from the volume.
  • a slave volume used to receive and store the primary volume backup data
  • a slave volume snapshot volume used to store snapshot data from the volume.
  • data replication is implemented based on snapshot technology.
  • the processing of the snapshot technology is: The primary data storage controller periodically snapshots the primary volume, and the data sent by the system host to the host is copied from the primary volume of the primary storage pool to the secondary volume through the snapshot.
  • COW Copy On Write
  • Split Mirror snapshot is required for the primary volume, and the system host during the snapshot activation process.
  • the performance of the primary storage array is greatly affected.
  • the data sent by the system host to the primary volume cannot be backed up to the secondary volume during the snapshot replication process, which increases the amount of data loss in the event of a disaster.
  • a first aspect of the embodiments of the present invention provides a data replication method, including:
  • difference data information corresponding to the difference data of the slave volume including a storage address of the difference data located on the primary volume and a difference data judgment value of the difference data, the difference data judgment value a ratio of a data amount including the difference data or a difference data amount of the difference data to a copy bandwidth between the primary volume and the secondary volume;
  • the copying the difference data from the primary volume to the secondary volume according to the storage address that the difference data is located on the primary volume includes: Each round of difference data is copied according to the order in which the data copy pointer is from the primary volume start address to the primary volume end address, and the difference data is taken from the storage address according to the difference data located on the primary volume. Copying the primary volume to the secondary volume, the data replication pointer is used to point to the address of the differential data currently being copied;
  • the primary volume receives data sent by the system host, if After the storage address of the primary volume is at the address currently indicated by the data copy pointer, the data is copied from the primary volume to the secondary volume in the current round of replication, if the data is in the The storage address of the primary volume is before the address currently indicated by the data copy pointer, and the data is not copied in the current round of replication.
  • a second aspect of the embodiments of the present invention provides a primary data storage controller, including:
  • processor a processor, a memory, a communication interface, and a bus, wherein the processor, the memory, and the The communication interface communicates via the bus;
  • the communication interface is configured to communicate with a primary storage pool and a secondary storage pool, the primary storage pool includes a primary volume, and the secondary storage pool includes a secondary volume;
  • the memory is used to store a program
  • a third aspect of the embodiments of the present invention provides a data replication control apparatus, including:
  • a difference data information obtaining module configured to obtain difference data information corresponding to the difference data of the primary volume and the volume data, where the difference data information includes a storage address of the difference data located on the primary volume and a difference data of the difference data. a value, the difference data judgment value including a data amount of the difference data or a difference data amount of the difference data and a ratio of a copy bandwidth between the primary volume and the secondary volume;
  • a fourth aspect of the embodiments of the present invention provides a data replication system, including: a primary data storage controller, a primary storage pool, and a secondary storage pool provided by the second aspect of the embodiments of the present invention, where the primary storage pool includes a primary storage pool Volume, the slave storage pool includes a slave volume.
  • the primary volume is distinguished from the difference data of the volume from the primary volume to the secondary volume, and the primary volume is not snapshot until the difference data judgment value is reduced to less than the threshold value.
  • FIG. 1 is a schematic structural diagram of a data replication system according to an embodiment of the present invention
  • FIG. 2 is a schematic flowchart of a data replication method applied according to an embodiment of the present invention
  • FIG. 3a and 3b are schematic flowcharts of another data replication method according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a first embodiment of an apparatus according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a second embodiment of an apparatus according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram of a system embodiment of an embodiment of the present invention.
  • Embodiments of the present invention provide a data replication method, apparatus, and system.
  • the data replication system consists of a system host, a primary storage array, and a secondary storage array.
  • the system host establishes a communication connection with the primary storage array
  • the primary storage array establishes a communication connection with the secondary storage array
  • the data sent by the system host to the primary storage array is stored in the primary storage pool
  • the primary storage pool and the secondary storage pool are also provided with a primary volume snapshot volume and a secondary volume snapshot volume, respectively, for storing snapshot data of the primary volume and the secondary volume.
  • the primary storage array also includes a primary data storage controller that controls data stored in the primary storage pool, and the slave storage array further includes a secondary data storage controller that controls data stored in the storage pool.
  • the storage controller records the storage information of the above-mentioned data on the primary volume, the data amount of the above data, and the like on the primary volume.
  • the primary data storage controller executes a preset data replication policy, and according to the data stored in the primary data storage controller, the data is stored in the primary volume, and the data is The primary storage pool is replicated to the secondary volume, and the snapshot data formed during the replication process due to the startup of the primary volume snapshot is stored in the primary volume snapshot volume.
  • the first embodiment of the method of the present invention provides a data replication method.
  • the flowchart is as shown in FIG. 2, and includes: Step 201: Obtain difference data information corresponding to the difference data of the primary volume from the volume, and the difference data information includes the difference data located at the primary a difference data judgment value of the storage address and the difference data on the volume, and the difference data judgment value includes a data amount of the difference data or a ratio of the difference data amount of the difference data to a copy bandwidth between the primary volume and the secondary volume;
  • the primary data storage controller obtains the difference data information of the difference data of the primary volume from the secondary volume according to the data information sent by the system host to the primary volume and the data information copied by the primary volume to the secondary volume.
  • the difference data information includes a storage address on which the difference data is located on the primary volume and a difference data judgment value of the difference data.
  • the difference data judgment value includes the data amount of the difference data, and if the primary data storage controller records the copy bandwidth between the primary volume and the secondary volume, combined with the data amount of the difference data, it can be determined that the difference data is copied from the primary volume to the secondary data.
  • the time required for the volume that is, the ratio of the data amount of the difference data to the copy bandwidth between the primary volume and the secondary volume, the ratio can also be used as the difference data judgment value, and the above-mentioned replication bandwidth is used for data replication between the primary volume and the secondary volume.
  • the communication bandwidth used at the time is used as the difference data judgment value, and the above-mentioned replication bandwidth is used for data replication between the primary volume and the secondary volume.
  • Step 202 Determine that the difference data judgment value is not less than a preset threshold, and copy the difference data from the primary volume to the secondary volume according to the storage address where the difference data is located on the primary volume.
  • the preset threshold value refers to the threshold value corresponding to the difference data judgment value in step 201, that is, if the data amount of the difference data is selected as the difference data judgment value in step 201, the preset threshold value is one.
  • the amount of data if the ratio of the difference data amount of the difference data to the copy bandwidth between the primary volume and the secondary volume is selected as the difference data judgment value in step 201, the preset threshold value is a ratio.
  • the primary data storage controller records the differential data information of the differential data copied from the primary volume to the secondary volume, and if the system host has data sent to the primary volume during the replication process, the primary data storage controller also records the system master.
  • the data information corresponding to the data sent by the machine to the primary volume the data information includes the data amount corresponding to the data sent by the system host to the primary volume during the copying process, and the storage location of the data sent by the system host to the primary volume on the primary volume, so that The primary data storage controller is capable of updating the differential data information of the primary volume distinguished from the differential data of the secondary volume during the copying process.
  • Step 203 Determine that the difference data determination value is less than a preset threshold, perform a snapshot on the primary volume, and copy the difference data to the secondary volume according to the snapshot.
  • the primary volume is snapshotd, and the snapshot may be a copy-on-write snapshot or a split mirror snapshot, and the difference data is copied to the slave according to the snapshot. volume.
  • the process of copying and copying the snapshot on the primary volume is as follows:
  • a mapping table and a resource volume are created in the primary volume snapshot volume, and the pointer recorded in the mapping table points to the data block of the primary volume, where A pointer to the difference data is included in the pointer recorded in the mapping table.
  • the system host sends data to the primary volume
  • the original primary volume data stored in the storage space allocated to the above data in the primary volume is copied to the resource volume, and then the above data is stored in the primary volume.
  • the pointer to the original primary volume data stored on the primary volume recorded in the mapping table is changed to point to the original primary volume data stored on the resource volume.
  • the pointer to the difference data recorded in the mapping table guarantees the difference pointed to when the copy-on-write snapshot is created, regardless of whether or not data is stored in the storage space of the difference data stored in the primary volume during the copying process. Data, and copy the difference data to the slave volume through a pointer to the difference data recorded in the mapping table.
  • the split mirror snapshot of the primary volume is as follows: When the split mirror snapshot is created, the primary volume data is copied to the primary volume snapshot volume, and the primary volume is changed from the differential data of the volume to the primary volume.
  • the snapshot volume is distinguished from the secondary volume.
  • the system host sends data to the primary volume, the above data is directly stored in the primary volume.
  • the differential data when the split mirror snapshot is created is copied from the primary volume snapshot volume to the secondary volume, the split mirror is unrepealed. Snapshot.
  • the primary data storage controller when the difference data judgment value is greater than or equal to the preset threshold, directly copies the difference data from the primary volume to the secondary volume, thereby greatly reducing the number of startups of the primary volume snapshot, and reducing the number of startups.
  • the determination difference data determination value in step 202 is greater than or equal to If the preset threshold or the determined difference data judgment value in step 203 is smaller than the preset threshold, the snapshot is taken from the volume, and the snapshot may be a copy-on-write snapshot or a split mirror snapshot.
  • the difference data at the start of the primary volume snapshot is all copied to the secondary volume, that is, after step 203, the differential data is copied to the secondary volume according to the snapshot, and the secondary snapshot is cancelled.
  • the difference data is copied from the primary volume to the secondary volume before the secondary volume snapshot, until the difference data of the primary volume snapshot is completely copied to the secondary volume to cancel the secondary volume snapshot, and the differential data is received from the volume.
  • the data from the volume can be rolled back to the state at the time the snapshot was started.
  • the difference data is copied from the primary volume to the secondary storage address according to the difference data located on the primary volume.
  • the volume includes: The replication of each round of difference data is performed according to the data copy pointer from the address pointing to the primary volume to the end address of the primary volume. As shown in Figure 3a, the data replication pointer runs from A1 to A5 and points to the current The address of the copied difference data, and the difference data is copied from the primary volume to the secondary volume based on the storage address where the difference data is located on the primary volume.
  • the system host sends data to the primary volume. If the data sent by the system host is after the storage address of the primary volume is located at the address pointed to by the current data replication pointer, as shown in Figure 3a.
  • the data sent by the system host is stored in the A4 position in the primary volume, and the current data copy pointer points to the A3 position, then the current round of replication will copy the data sent by the above system host; if the data sent by the system host is in the storage address of the primary volume is currently Before the address pointed to by the data copy pointer, as shown in Figure 3b, the data sent by the system host is stored in the A2 position in the primary volume, and the current data copy pointer points to the A3 position, the current round of replication does not copy the data sent by the system host.
  • the data sent by the above system host is stored after A2 and will be copied to the secondary volume during the next round of differential data replication.
  • the first embodiment of the device of the present invention provides a primary data storage controller. As shown in FIG.
  • the primary data storage controller includes at least: a processor 401, a memory 402, a communication interface 403, and a bus 404, wherein the processor 401 and the memory 402 and communication interface 403 communicate over bus 404.
  • the memory 402 is used to store programs. Specifically, the program code may be included in the program, and the program code includes a computer execution instruction.
  • the memory 402 may be a high speed RAM memory or a non-volatile memory such as at least one disk memory.
  • the processor 401 is configured to execute an execution instruction stored in the memory 402, which may be a single core or a multi-core central processing unit (CPU), or an application specific integrated circuit (ASIC), or configured to be implemented.
  • an execution instruction stored in the memory 402 which may be a single core or a multi-core central processing unit (CPU), or an application specific integrated circuit (ASIC), or configured to be implemented.
  • CPU central processing unit
  • ASIC application specific integrated circuit
  • Communication interface 403 is used to communicate with and from the primary storage pool, which includes the primary volume, and the secondary storage pool includes the secondary volume.
  • the apparatus 500 includes:
  • the difference data information obtaining module 501 is configured to obtain difference data information corresponding to the difference data of the primary volume and the difference data, where the difference data information includes a storage address of the difference data located on the primary volume and a difference data judgment value of the difference data, and the difference data is determined.
  • the value includes the amount of data of the difference data or the ratio of the difference data amount of the difference data to the copy bandwidth between the primary volume and the secondary volume;
  • the data replication module 502 is configured to: when determining that the difference data judgment value is not less than a preset threshold, copy the difference data from the primary volume to the secondary volume according to the storage address where the difference data is located on the primary volume;
  • the snapshot copy module 503 is configured to: when the difference data judgment value is less than a preset threshold, snapshot the primary volume, and copy the difference data to the secondary volume through the snapshot.
  • the present invention further provides an embodiment of a data replication system.
  • the system 600 includes: a primary data storage controller 601, a primary storage pool 602, a secondary storage pool 603, and a primary storage pool 602, as provided in the foregoing device embodiment.
  • Volume 6021, from storage pool 603 includes slave volume 6031.
  • the primary data storage controller 601 establishes communication with the primary storage pool 602, and the primary storage pool 602 establishes communication with the secondary storage pool 603.
  • the embodiment of the invention further provides a computer readable medium, comprising computer execution instructions, wherein the computer executes the instructions for the controller to perform the method according to any one of the method embodiments of the present invention.
  • Computer readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one location to another.
  • a storage medium may be any available media that can be accessed by a computer.
  • computer readable media may comprise RAM, ROM, EEPROM, CD-ROM or other optical disk storage, disk storage media or other magnetic storage device, or can be used for carrying or storing in the form of an instruction or data structure.
  • the desired program code and any other medium that can be accessed by the computer may suitably be a computer readable medium.
  • the software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, then the coaxial cable , fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, wireless, and microwaves are included in the fixing of the associated media.
  • coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, wireless, and microwaves are included in the fixing of the associated media.
  • a disk and a disc include a compact disc (CD), a laser disc, a compact disc, a digital versatile disc (DVD), a floppy disc, and a Blu-ray disc, wherein the disc is usually magnetically copied, and the disc is The laser is used to optically replicate the data. Combinations of the above should also be included within the scope of the computer readable media.

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Quality & Reliability (AREA)
  • Databases & Information Systems (AREA)
  • Computing Systems (AREA)
  • Data Mining & Analysis (AREA)
  • Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
  • Retry When Errors Occur (AREA)

Abstract

实施例公开了一种数据复制方法、装置以及系统。其中，数据复制的方法包括：获得主卷区别于从卷的差异数据对应的差异数据信息，差异数据信息包括差异数据位于主卷上的存储地址和差异数据的差异数据判断值（201），差异数据判断值包括差异数据的数据量或差异数据的差异数据量与主卷跟从卷之间的复制带宽之比；确定差异数据判断值不小于预设的阈值，根据差异数据位于主卷上的存储地址将差异数据从主卷复制到从卷（202）；确定差异数据判断值小于预设的阈值，对主卷进行快照，并根据快照将差异数据复制到从卷（203）。实施例提出了一种数据复制方法和装置，能够降低频繁启动快照对于主存储阵列和系统主机的性能影响。

Description

一种数据复制方法、 装置以及系统
技术领域 本发明涉及存储技术领域， 具体涉及数据复制方法、 装置以及系统。
背景技术
现有存储系统中包括： 作为数据实际产生方的系统主机， 对系统主机产生 的数据进行存储和控制的主存储阵列， 对主存储阵列的数据进行存储备份的从 存储阵列。 其中， 主存储阵列包括： 作为数据存储设备的主存储池和对主存储 池中存储的数据进行控制的主数据存储控制器。 主存储池包括： 用来接收并存 储系统主机发送数据的主卷和用来存储主卷的快照数据的主卷快照卷。 从存储 阵列包括： 作为数据存储设备的从存储池和对从存储池中存储的数据进行控制 的从数据存储控制器。 从存储池包括： 用来接收并存储主卷备份数据的从卷和 用来存储从卷的快照数据的从卷快照卷。 在数据生产过程中， 系统主机产生的 数据将会发送到主卷中， 通过数据复制技术， 将系统主机发送到主卷的数据不 断备份到从卷中， 使得从卷与主卷的数据保持一致， 以达到当系统主机的数据 损坏时的灾难备份作用。
现有技术中， 数据复制是基于快照技术实现的。 快照技术的处理过程是： 主数据存储控制器周期性地对主卷进行快照， 并通过快照将系统主机发送给主 机的数据从主存储池的主卷复制到从卷。 现有技术中如果需要对主卷中数据进 行修改， 则需要进行对主卷进行写时复制 （Copy On Write, 简称 "COW" )快 照或者分割镜像 ( Split Mirror )快照， 快照启用过程中系统主机和主存储阵列的 性能受到较大影响， 同时在快照复制过程中系统主机发送到主卷的数据无法备 份到从卷， 增大了灾难时的数据丟失量。
发明内容 针对上述现有技术而提出本发明， 利用本发明可以解决现有技术方案中频 繁启动快照对系统主机和主存储阵列的性能影响严重的问题， 以及现有快照复 制过程中， 系统主机发送到主卷的数据无法同步到从卷， 从而导致灾难发生时 数据丟失量较大的问题。 本发明实施例的第一方面提供了一种数据复制方法， 包括：
获得主卷区别于从卷的差异数据对应的差异数据信息， 所述差异数据信息 包括所述差异数据位于主卷上的存储地址和所述差异数据的差异数据判断值， 所述差异数据判断值包括所述差异数据的数据量或所述差异数据的差异数据量 与所述主卷跟所述从卷之间的复制带宽之比；
确定所述差异数据判断值不小于预设的阔值， 根据所述差异数据位于所述 主卷上的存储地址将所述差异数据从所述主卷复制到所述从卷；
确定所述差异数据判断值小于所述预设的阔值， 对所述主卷进行快照， 并 根据所述快照将所述差异数据复制到所述从卷。 结合第一方面， 在第一方面的第一种实现方式中， 所述根据所述差异数据 位于主卷上的存储地址将所述差异数据从所述主卷复制到所述从卷具体包括： 每轮差异数据的复制根据数据复制指针从所述主卷起始地址到所述主卷结束地 址的顺序进行， 并根据所述差异数据位于主卷上的存储地址， 将所述差异数据 从所述主卷复制到所述从卷， 所述数据复制指针用于指向当前正在复制的差异 数据的地址；
在所述根据所述差异数据位于主卷上的存储地址将所述差异数据从所述主 卷复制到所述从卷的过程中， 所述主卷接收到系统主机下发的数据， 如果所述 数据在所述主卷的存储地址处于所述数据复制指针当前指示的地址之后， 则在 本轮复制中将所述数据从所述主卷复制到所述从卷， 如果所述数据在所述主卷 的存储地址处于所述数据复制指针当前指示的地址之前， 在本轮复制中不会复 制所述数据。 本发明实施例的第二方面提供了一种主数据存储控制器， 包括：
处理器， 存储器， 通信接口和总线， 其中， 所述处理器、 所述存储器和所 述通信接口通过所述总线通信；
所述通信接口用于与主存储池以及从存储池通信， 所述主存储池包括主卷， 所述从存储池包括从卷；
所述存储器用于存放程序；
当所述主数据存储控制器运行时， 所述处理器用于执行所述存储器存储的 所述程序， 以执行本发明实施例第一方面提供的数据复制方法或本发明实施例 第一方面的第一种实现方式提供的数据复制方法。 本发明实施例的第三方面提供了一种数据复制控制装置， 包括：
差异数据信息获取模块， 用于获得主卷区别于从卷的差异数据对应的差异 数据信息， 所述差异数据信息包括所述差异数据位于主卷上的存储地址和所述 差异数据的差异数据判断值， 所述差异数据判断值包括所述差异数据的数据量 或所述差异数据的差异数据量与所述主卷跟所述从卷之间的复制带宽之比；
数据复制模块， 用于确定所述差异数据判断值不小于预设阔值时， 根据所 述差异数据位于主卷上的存储地址将所述差异数据从所述主卷复制到所述从卷; 快照复制模块， 用于确定当所述差异数据判断值小于预设的阔值时， 对所 述主卷进行快照， 并通过所述快照将所述差异数据复制到所述从卷。 本发明实施例的第四方面提供了一种数据复制系统， 包括： 如本发明实施 例的第二方面提供的主数据存储控制器、 主存储池、 从存储池， 所述主存储池 包括主卷， 所述从存储池包括从卷。 通过以上提供的实施例， 主卷区别于从卷的差异数据从主卷复制到从卷的 过程中， 直到差异数据判断值降低至小于阔值之前都并未对主卷进行快照， 相 对于现有的频繁对主卷进行快照的技术方案， 明显地降低了频繁启用快照对于 系统主机和主存储阵列的性能影响， 同时本发明实施例在直接复制差异数据过 程中， 能够复制主机发送到主卷的数据至从卷， 减少了灾难时的数据丟失量。
附图说明
为了更清楚地说明本发明实施例^现右技术中的技术方案， 下面将对实施 例中所需要使用的附图作以简单地介绍， 显而易见的， 下面描述中的附图是本 发明的一些实施例， 对于本领域普通技术人员来讲， 在不付出创造性劳动的前 提下， 还可以根据这些附图获得其他的附图。
图 1为本发明实施例所应用的数据复制系统架构示意图
图 2为本发明实施例所应用的数据复制方法流程示意图
图 3a与图 3b为本发明实施例所应用的另一数据复制方法流程示意图； 图 4为本发明实施例所应用的设备实施例一的组成结构示意图；
图 5为本发明实施例所应用的装置实施例二的组成结构示意图；
图 6为本发明实施例所应用的系统实施例的组成结构示意图。
具体实施方式
为使本发明实施例的目的、 技术方案和优点更加清楚， 下面将结合本发明 实施例中的附图，对本发明实施例中的技术方案进行清楚、 完整地描述，显然， 所描述的实施例是本发明一部分实施例， 而不是全部的实施例。 基于本发明中 的实施例， 本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其 他实施例， 都属于本发明保护的范围。
本发明实施例提供一种数据复制方法、 装置和系统。 如图 1 所示， 数据复 制系统包含系统主机， 主存储阵列， 从存储阵列。 其中， 系统主机与主存储阵 列建立通信连接， 主存储阵列与从存储阵列建立通信连接， 系统主机发送给主 存储阵列的数据存储于主存储池内的主卷， 主卷中数据的备份复制数据存储于 从存储池的从卷， 主存储池和从存储池还分别设有主卷快照卷和从卷快照卷， 分别用于存储主卷和从卷的快照数据。 主存储阵列中还包括对主存储池中存储 的数据进行控制的主数据存储控制器， 从存储阵列中还包括对从存储池中存储 的数据进行控制的从数据存储控制器。 存储控制器将记录上述数据在主卷上的存储地址、 上述数据的数据量等上述数 据在主卷上的存储信息。 同时， 主数据存储控制器执行预设的数据复制策略， 并根据主数据存储控制器中记录的上述数据在主卷的存储数据， 将上述数据从 主存储池复制到从卷， 复制过程中由于启动主卷快照形成的快照数据存储在主 卷快照卷中。 从数据存储控制器将记录从主存储池复制至从卷的数据在从卷上 的存储信息， 从卷接收主存储池复制至从卷的数据的过程中， 启动从卷快照形 成的快照数据存储在从卷快照卷中。
基于上述内容， 本发明的实施例提供一种数据复制方法、 装置以及系统。 方法实施例一
本发明方法实施例一提供一种数据复制方法， 流程图如图 2所示， 包括： 步骤 201 : 获得主卷区别于从卷的差异数据对应的差异数据信息， 差异数据 信息包括差异数据位于主卷上的存储地址和差异数据的差异数据判断值， 差异 数据判断值包括差异数据的数据量或差异数据的差异数据量与主卷跟从卷之间 的复制带宽之比；
其中， 主数据存储控制器根据其记录的系统主机发送至主卷的数据信息以 及主卷复制至从卷的数据信息， 获得主卷区别于从卷的差异数据的差异数据信 息。 上述差异数据信息包括差异数据位于主卷上的存储地址和差异数据的差异 数据判断值。 上述差异数据判断值包括差异数据的数据量， 同时如果主数据存 储控制器记录了主卷跟从卷之间的复制带宽， 结合上述差异数据的数据量， 可 得出差异数据从主卷复制到从卷所需要的时间， 即上述差异数据的数据量与主 卷跟从卷之间的复制带宽之比， 该比值也能够作为差异数据判断值， 上述复制 带宽为主卷与从卷之间进行数据复制时使用的通信带宽。
步骤 202: 确定差异数据判断值不小于预设的阔值， 根据差异数据位于主卷 上的存储地址将差异数据从主卷复制到从卷。
其中， 预设的阔值指的是步骤 201 中的差异数据判断值所对应的阔值， 即 如果步骤 201 中选择差异数据的数据量作为差异数据判断值， 则上述预设的阔 值为一个数据量， 如果步骤 201 中选择差异数据的差异数据量与主卷跟从卷之 间的复制带宽之比作为差异数据判断值时， 则上述预设的阔值为一个比值。 当 主数据存储控制器确定上述差异数据判断值大于等于上述预设的阔值后， 根据 差异数据位于主卷上的存储地址，将差异数据从主卷复制到从卷。复制过程中， 主数据存储控制器记录从主卷复制至从卷的差异数据的差异数据信息， 同时如 果复制过程中系统主机有数据发送至主卷， 主数据存储控制器也将记录系统主 机发送至主卷的数据所对应的数据信息， 该数据信息包括复制过程中系统主机 发送至主卷的数据对应的数据量和系统主机发送至主卷的数据在主卷上的存储 位置， 使得主数据存储控制器能够在复制过程中更新主卷区别于从卷的差异数 据的差异数据信息。
步骤 203 :确定所述差异数据判断值小于预设的阔值，对所述主卷进行快照， 并根据所述快照将所述差异数据复制到所述从卷。
其中， 主数据存储控制器确定上述差异数据判断值小于上述预设的阔值后， 对上述主卷进行快照， 上述快照可以为写时复制快照或分割镜像快照， 根据快 照将差异数据复制到从卷。
其中对主卷进行写时复制快照的过程为： 写时复制快照建立时， 在主卷快 照卷中建立一个映射表和一个资源卷， 映射表中记录的指针指向主卷的数据块， 其中在映射表中记录的指针中包括指向差异数据的指针。 写时复制快照存在期 间， 如果系统主机发送数据至主卷， 则将主卷中分配给上述数据的存储空间中 所存储的原主卷数据复制至资源卷， 之后将上述数据存储至主卷中被分配的存 储空间中， 并且映射表中记录的指向主卷上存储的原主卷数据的指针改为指向 复制至资源卷上存储的原主卷数据。 写时复制快照存在期间， 映射表中记录的 指向差异数据的指针无论复制过程中是否有数据存储至主卷上存储差异数据的 存储空间中， 都能保证指向写时复制快照建立时指向的差异数据， 并通过映射 表中记录的指向差异数据的指针将差异数据复制到从卷， 当写时复制快照建立 时的差异数据全部从主卷复制至从卷时， 取消写时复制快照。
其中对主卷进行分割镜像快照为： 分割镜像快照建立时， 将主卷数据复制 至主卷快照卷中， 则主卷区别于从卷的差异数据转换成了主卷快照卷区别于从 卷。 分割镜像快照存在期间， 如果系统主机发送数据至主卷， 则将上述数据直 接存储在主卷中， 当分割镜像快照建立时的差异数据全部从主卷快照卷复制至 从卷时， 取消分割镜像快照。
本方法实施例中， 当差异数据判断值大于等于预设的阔值时， 主数据存储 控制器直接将差异数据从主卷复制到从卷中， 大幅减少了主卷快照的启动次数， 降低了频繁启用快照对于系统主机和主存储阵列的性能影响。 方法实施例二
本发明方法实施例二中， 在本发明方法实施例一的基础上， 在确定差异数 据判断值和预设的阔值之间的大小关系之前， 即步骤 202 中的确定差异数据判 断值大于等于预设的阔值或步骤 203 中的确定差异数据判断值小于预设的阔值 之前， 对从卷进行快照， 上述快照可以为写时复制快照或分割镜像快照。 在主 卷快照启动时的差异数据全部复制到从卷后， 即步骤 203 中根据快照将差异数 据复制到从卷后， 取消从卷快照。
本方法实施例中， 差异数据从主卷复制到从卷之前对从卷进行快照， 直到 主卷快照启动时的差异数据全部复制到从卷后取消从卷快照， 保证了从卷在接 收差异数据的过程中， 从卷上的数据可以随时回滚至从卷快照启动时刻的状态。 方法实施例三
本发明方法实施例三中， 在方法实施例一的基础上， 进一步的， 在方法实 施例一中的步骤 202 中的根据差异数据位于主卷上的存储地址将差异数据从主 卷复制到从卷具体包括： 每轮差异数据的复制根据数据复制指针从指向主卷起 始地址到指向主卷结束地址的顺序进行， 如图 3a中， 数据复制指针从 A1到 A5 的顺序运行并指向当前正在复制的差异数据的地址， 并根据差异数据位于主卷 上的存储地址， 将差异数据从主卷复制到从卷。
差异数据从主卷复制到从卷期间， 同时系统主机有数据发送到主卷中， 如 果系统主机发送的数据在主卷的存储地址处于当前数据复制指针指向的地址之 后， 如图 3a所示， 系统主机发送的数据存储于主卷中 A4位置， 而当前数据复 制指针指向 A3位置， 则本轮复制将会复制上述系统主机发送的数据； 如果系统 主机发送的数据在主卷的存储地址处于当前数据复制指针指向的地址之前， 如 图 3b所示， 系统主机发送的数据存储于主卷中 A2位置， 而当前数据复制指针 指向 A3位置， 则本轮复制不会复制上述系统主机发送的数据， 上述系统主机发 送的数据存储在 A2后， 并且将在下一轮差异数据复制过程中被复制到从卷中。 本发明设备实施例一提供一种主数据存储控制器， 如图 4 所示， 主数据存 储控制器至少包括： 处理器 401 ,存储器 402 ,通信接口 403和总线 404,其中， 处理器 401、 存储器 402和通信接口 403通过总线 404通信。 存储器 402用于存放程序。 具体的， 程序中可以包括程序代码， 所述程序 代码包括计算机执行指令。 所述存储器 402可以为高速 RAM存储器， 也可以为 非易失性存储器（non-volatile memory ), 例如至少一个磁盘存储器。
处理器 401用于执行存储器 402存储的执行指令， 可能为单核或多核中央 处理单元（Central Processing Unit, CPU ), 或者为特定集成电路 ( Application Specific Integrated Circuit, ASIC ), 或者为被配置成实施本发明实施例的一个或 多个集成电路。
通信接口 403 用于与主存储池以及从存储池通信， 主存储池包括主卷， 从 存储池包括从卷。
当控制器运行时， 处理器 401 运行程序， 以执行上述方法实施例一、 方法 实施例二和方法实施例三中之任一。 与上述本发明方法实施例对应， 本发明装置实施例二提供了一种数据复制 控制装置， 如图 5所示， 所述装置 500包括：
差异数据信息获取模块 501 ,用于获得主卷区别于从卷的差异数据对应的差 异数据信息， 差异数据信息包括差异数据位于主卷上的存储地址和差异数据的 差异数据判断值， 差异数据判断值包括差异数据的数据量或差异数据的差异数 据量与主卷跟从卷之间的复制带宽之比；
数据复制模块 502 , 用于确定差异数据判断值不小于预设阔值时， 根据差异 数据位于主卷上的存储地址将差异数据从主卷复制到从卷；
快照复制模块 503 , 用于确定当差异数据判断值小于预设的阔值时，对主卷 进行快照， 并通过快照将差异数据复制到从卷。 本发明还提供了一种数据复制系统的实施例， 该系统 600 包括： 如前述装 置实施例中提供的主数据存储控制器 601、 主存储池 602、 从存储池 603 , 主存 储池 602包括主卷 6021 , 从存储池 603包括从卷 6031。 主数据存储控制器 601 与主存储池 602之间建立通信， 主存储池 602与从存储池 603之间建立通信。
本发明实施例还提供一种计算机可读介质， 包含计算机执行指令， 所述计 算机执行指令用于控制器执行本发明任一方法实施例所述的方法。
需要说明的是： 对于前述的各方法实施例， 为了简单描述， 故将其都表述 为一系列的动作组合， 但是本领域技术人员应该知悉， 本发明并不受所描述的 动作顺序的限制， 因为依据本发明，某些步骤可以釆用其他顺序或者同时进行。 其次， 本领域技术人员也应该知悉， 说明书中所描述的实施例均属于优选实施 例， 所涉及的动作和模块并不一定是本发明所必须的。
在上述实施例中， 对各个实施例的描述都各有侧重， 某个实施例中没有详 述的部分， 可以参见其他实施例的相关描述。
通过以上的实施方式的描述， 所属领域的技术人员可以清楚地了解到本发 明可以用硬件实现， 或固件实现， 或它们的组合方式来实现。 当使用软件实现 时， 可以将上述功能存储在计算机可读介质中或作为计算机可读介质上的一个 或多个指令或代码进行传输。 计算机可读介质包括计算机存储介质和通信介质， 其中通信介质包括便于从一个地方向另一个地方传送计算机程序的任何介质。 存储介质可以是计算机能够存取的任何可用介质。 以此为例但不限于： 计算机 可读介质可以包括 RAM、 ROM, EEPROM、 CD-ROM或其他光盘存储、 磁盘 存储介质或者其他磁存储设备、 或者能够用于携带或存储具有指令或数据结构 形式的期望的程序代码并能够由计算机存取的任何其他介质。 此外。 任何连接 可以适当的成为计算机可读介质。例如，如果软件是使用同轴电缆、光纤光缆、 双绞线、 数字用户线（DSL )或者诸如红外线、 无线电和微波之类的无线技术从 网站、 服务器或者其他远程源传输的， 那么同轴电缆、 光纤光缆、 双绞线、 DSL 或者诸如红外线、 无线和微波之类的无线技术包括在所属介质的定影中。 如本 发明所使用的， 盘 （Disk )和碟（Disc ) 包括压缩光碟（CD )、 激光碟、 光碟、 数字通用光碟（DVD )、 软盘和蓝光光碟， 其中盘通常磁性的复制数据， 而碟则 用激光来光学的复制数据。 上面的组合也应当包括在计算机可读介质的保护范 围之内。
最后应说明的是： 以上实施例仅用以说明本发明的技术方案， 而非对其限 制； 尽管参照前述实施例对本发明进行了详细的说明， 本领域的普通技术人员 应当理解： 其依然可以对前述各实施例所记载的技术方案进行修改， 或者对其 中部分技术特征进行等同替换； 而这些修改或者替换， 并不使相应技术方案的 本质脱离本发明各实施例技术方案的精神和范围。

Claims

权利 要求 书
1、 一种数据复制方法， 其特征在于， 包括：
获得主卷区别于从卷的差异数据对应的差异数据信息， 所述差异数据信息 包括所述差异数据位于主卷上的存储地址和所述差异数据的差异数据判断值， 所述差异数据判断值包括所述差异数据的数据量或所述差异数据的差异数据量 与所述主卷跟所述从卷之间的复制带宽之比；
确定所述差异数据判断值不小于预设的阔值， 根据所述差异数据位于所述 主卷上的存储地址将所述差异数据从所述主卷复制到所述从卷；
确定所述差异数据判断值小于所述预设的阈值， 对所述主卷进行快照， 并 根据所述快照将所述差异数据复制到所述从卷。
2、 根据权利要求 1所述的数据复制方法， 其特征在于， 包括：
所述根据所述差异数据位于主卷上的存储地址将所述差异数据从所述主卷 复制到所述从卷具体包括： 每轮差异数据的复制根据数据复制指针从所述主卷 起始地址到所述主卷结束地址的顺序进行， 并根据所述差异数据位于主卷上的 存储地址， 将所述差异数据从所述主卷复制到所述从卷， 所述数据复制指针用 于指向当前正在复制的差异数据的地址；
在所述根据所述差异数据位于主卷上的存储地址将所述差异数据从所述主 卷复制到所述从卷的过程中， 所述主卷接收到系统主机发送的数据， 如果所述 数据在所述主卷的存储地址处于所述数据复制指针当前指示的地址之后， 则在 本轮复制中将所述数据从所述主卷复制到所述从卷， 如果所述数据在所述主卷 的存储地址处于所述数据复制指针当前指示的地址之前， 在本轮复制中不会复 制所述数据。
3、 一种主数据存储控制器， 其特征在于， 所述主数据存储控制器包括：
处理器， 存储器， 通信接口和总线， 其中， 所述处理器、 所述存储器和所 述通信接口通过所述总线通信；
所述通信接口用于与主存储池以及从存储池通信， 所述主存储池包括主卷, 所述从存储池包括从卷；
所述存储器用于存放程序； 当所述主数据存储控制器运行时， 所述处理器用于执行所述存储器存储的 所述程序， 以执行所述权利要求 1-2任一所述的方法。
4、 一种数据复制控制装置， 其特征在于， 包括：
差异数据信息获取模块， 用于获得主卷区别于从卷的差异数据对应的差异 数据信息， 所述差异数据信息包括所述差异数据位于主卷上的存储地址和所述 差异数据的差异数据判断值， 所述差异数据判断值包括所述差异数据的数据量 或所述差异数据的差异数据量与所述主卷跟所述从卷之间的复制带宽之比；
数据复制模块， 用于确定所述差异数据判断值不小于预设阔值时， 根据所 述差异数据位于主卷上的存储地址将所述差异数据从所述主卷复制到所述从卷; 快照复制模块， 用于确定当所述差异数据判断值小于预设的阔值时， 对所 述主卷进行快照， 并通过所述快照将所述差异数据复制到所述从卷。
5、 一种数据复制系统， 其特征在于， 所述系统包括： 如权利要求 3所述的主数 据存储控制器、 主存储池、 从存储池， 所述主存储池包括主卷， 所述从存储池 包括从卷。
PCT/CN2014/082229 2014-07-15 2014-07-15 一种数据复制方法、装置以及系统 WO2016008094A1 (zh)

Priority Applications (7)

Application Number Priority Date Filing Date Title
CN201480080641.0A CN106537353B (zh) 2014-07-15 2014-07-15 一种数据复制方法、装置以及系统
PCT/CN2014/082229 WO2016008094A1 (zh) 2014-07-15 2014-07-15 一种数据复制方法、装置以及系统
EP14897806.7A EP3163447B1 (en) 2014-07-15 2014-07-15 Data replication method, device and system
JP2017500888A JP6455898B2 (ja) 2014-07-15 2014-07-15 データ複製の方法、一次データストレージコントローラ、装置、システム、及びプログラム
US15/405,996 US11093335B2 (en) 2014-07-15 2017-01-13 Data replication method, apparatus, and system
US17/381,733 US11734119B2 (en) 2014-07-15 2021-07-21 Data replication method, apparatus, and system
US17/546,319 US20220100609A1 (en) 2014-07-15 2021-12-09 Data Replication Method, Apparatus, and System

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2014/082229 WO2016008094A1 (zh) 2014-07-15 2014-07-15 一种数据复制方法、装置以及系统

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US15/405,996 Continuation US11093335B2 (en) 2014-07-15 2017-01-13 Data replication method, apparatus, and system

Publications (1)

Publication Number Publication Date
WO2016008094A1 true WO2016008094A1 (zh) 2016-01-21

Family

ID=55077798

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2014/082229 WO2016008094A1 (zh) 2014-07-15 2014-07-15 一种数据复制方法、装置以及系统

Country Status (5)

Country Link
US (3) US11093335B2 (zh)
EP (1) EP3163447B1 (zh)
JP (1) JP6455898B2 (zh)
CN (1) CN106537353B (zh)
WO (1) WO2016008094A1 (zh)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108733514B (zh) * 2018-05-24 2022-07-08 郑州云海信息技术有限公司 一种异构存储间快照实现的方法、系统及设备
CN111435925B (zh) * 2019-01-11 2023-09-26 阿里巴巴集团控股有限公司 快照数据传输方法及装置
CN110704239B (zh) * 2019-09-03 2022-05-27 杭州宏杉科技股份有限公司 数据复制方法、装置、电子设备
US11005924B1 (en) * 2020-04-01 2021-05-11 Netapp, Inc. Disparity of quality of service (QoS) settings of volumes across a cluster
US11140219B1 (en) 2020-04-07 2021-10-05 Netapp, Inc. Quality of service (QoS) setting recommendations for volumes across a cluster
US11436251B2 (en) * 2020-10-02 2022-09-06 EMC IP Holding Company LLC Data size based replication
US11693563B2 (en) 2021-04-22 2023-07-04 Netapp, Inc. Automated tuning of a quality of service setting for a distributed storage system based on internal monitoring

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1704903A (zh) * 2004-06-03 2005-12-07 华为技术有限公司 一种快照备份的方法
CN101266565A (zh) * 2008-04-18 2008-09-17 华为技术有限公司 一种数据备份的方法和装置
US20120233123A1 (en) * 2011-03-08 2012-09-13 Computer Associates Think, Inc. System and method for providing assured recovery and replication
CN103617096A (zh) * 2013-11-04 2014-03-05 华为技术有限公司 一种存储数据的复制方法、设备及系统

Family Cites Families (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5835953A (en) * 1994-10-13 1998-11-10 Vinca Corporation Backup system that takes a snapshot of the locations in a mass storage device that has been identified for updating prior to updating
JP2002259062A (ja) * 2001-02-28 2002-09-13 Hitachi Ltd 記憶装置システム及び記憶装置システムにおけるデータの複写方法
US6983352B2 (en) * 2003-06-19 2006-01-03 International Business Machines Corporation System and method for point in time backups
US7231502B2 (en) * 2004-02-04 2007-06-12 Falcon Stor Software, Inc. Method and system for storing data
JP4790283B2 (ja) 2005-02-22 2011-10-12 株式会社日立製作所 ストレージサブシステム及びストレージシステム
JP2005275494A (ja) * 2004-03-23 2005-10-06 Hitachi Ltd ストレージシステム及びストレージシステムのリモートコピー方法
JP4733431B2 (ja) 2005-06-01 2011-07-27 株式会社日立製作所 リモートコピーの初期コピーシステムおよび初期コピー方法ならびに記憶装置
JP4993913B2 (ja) * 2006-01-13 2012-08-08 株式会社日立製作所 記憶制御装置及びそのデータ管理方法
JP2007241623A (ja) * 2006-03-08 2007-09-20 Nikon Corp 電子機器およびデータ転送プログラム
JP2007334913A (ja) * 2007-08-16 2007-12-27 Hitachi Ltd 記憶装置システム及び記憶装置システムにおけるデータの複写方法
JP2009157471A (ja) * 2007-12-25 2009-07-16 Hitachi Ltd ファイル共有システム及びファイル共有システムの設定方法
CN101241456B (zh) * 2008-02-28 2011-07-06 成都市华为赛门铁克科技有限公司 一种数据保护方法和装置
JP5244430B2 (ja) * 2008-03-21 2013-07-24 株式会社日立製作所 ストレージ装置及びその制御方法
US8250033B1 (en) * 2008-09-29 2012-08-21 Emc Corporation Replication of a data set using differential snapshots
JP2011034164A (ja) 2009-07-30 2011-02-17 Hitachi Ltd リモートコピーシステム及びリモートコピー制御方法
US8812436B2 (en) * 2010-05-04 2014-08-19 Symantec Corporation Schedule based data lifecycle management
JP5188538B2 (ja) * 2010-05-27 2013-04-24 株式会社日立製作所 計算機システム及びリストア方法
US9298563B2 (en) * 2010-06-01 2016-03-29 Hewlett Packard Enterprise Development Lp Changing a number of disk agents to backup objects to a storage device
US8386850B2 (en) * 2010-09-29 2013-02-26 Sepaton, Inc. System health monitor
US8561074B2 (en) * 2010-11-19 2013-10-15 Hewlett-Packard Development Company, L.P. Enhanced backup job scheduling
EP2674866A4 (en) * 2011-06-23 2015-03-18 Hitachi Ltd STORAGE ADMINISTRATION SYSTEM AND STORAGE DELIVERY METHOD
JP5977011B2 (ja) * 2011-09-29 2016-08-24 富士通株式会社 ストレージ装置、制御装置およびストレージ装置制御方法
US20130085995A1 (en) * 2011-09-29 2013-04-04 International Business Machines Corporation Managing back up operations for data
US8706962B2 (en) * 2012-01-27 2014-04-22 International Business Machines Corporation Multi-tier storage system configuration adviser
US9558783B2 (en) * 2012-05-21 2017-01-31 Hewlett Packard Enterprises Development LP System and method for displaying tape drive utilization and performance data
CN103970585B (zh) * 2013-01-31 2017-10-27 新华三技术有限公司 创建虚拟机的方法及装置
US11238009B1 (en) 2013-03-13 2022-02-01 Veritas Technologies Llc Techniques for automated policy analysis

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1704903A (zh) * 2004-06-03 2005-12-07 华为技术有限公司 一种快照备份的方法
CN101266565A (zh) * 2008-04-18 2008-09-17 华为技术有限公司 一种数据备份的方法和装置
US20120233123A1 (en) * 2011-03-08 2012-09-13 Computer Associates Think, Inc. System and method for providing assured recovery and replication
CN103617096A (zh) * 2013-11-04 2014-03-05 华为技术有限公司 一种存储数据的复制方法、设备及系统

Also Published As

Publication number Publication date
US20170132085A1 (en) 2017-05-11
CN106537353A (zh) 2017-03-22
JP6455898B2 (ja) 2019-01-23
JP2017521786A (ja) 2017-08-03
CN106537353B (zh) 2019-10-18
US11734119B2 (en) 2023-08-22
US11093335B2 (en) 2021-08-17
EP3163447B1 (en) 2019-11-06
EP3163447A4 (en) 2017-05-24
US20220100609A1 (en) 2022-03-31
EP3163447A1 (en) 2017-05-03
US20210349784A1 (en) 2021-11-11

Similar Documents

Publication Publication Date Title
WO2016008094A1 (zh) 一种数据复制方法、装置以及系统
EP3185125B1 (en) Data backup method, system, node and computer storage media
RU2596585C2 (ru) Способ отправки данных, способ приема данных и устройство хранения данных
US8700570B1 (en) Online storage migration of replicated storage arrays
TWI522807B (zh) 利用儲存區域網路回復電腦系統的系統及方法
US8799602B2 (en) Automated migration to a new target volume via merged bitmaps to maintain consistency
US8335766B2 (en) Flash-copying within asynchronous mirroring environment
US20170168756A1 (en) Storage transactions
JP6136629B2 (ja) ストレージ制御装置，ストレージシステム，および制御プログラム
WO2017008648A1 (zh) 集群切换方法与设备
WO2014000249A1 (zh) 快照数据处理方法及系统、存储系统、快照代理
US9672150B2 (en) Migrating write information in a write cache of a storage system
US8560789B2 (en) Disk apparatus, data replicating method onto disk apparatus and program recording medium
US10409504B2 (en) Soft-switch in storage system
JP5170169B2 (ja) ディスクアレイ装置間のリモートコピー処理システム、処理方法、及び処理用プログラム
CN105760456A (zh) 一种保持数据一致性的方法和装置
US10809939B2 (en) Disk synchronization
US9304876B2 (en) Logical volume migration in single server high availability environments
JP2013029911A (ja) 制御装置、制御方法およびストレージ装置
CN107239365B (zh) 一种访问存储设备的方法及装置
JP4583075B2 (ja) サイト間でデータをミラーリングする方法、システム、およびプログラム
CN118132004A (zh) 一种双活卷状态同步方法、装置、设备及介质
CN112286626A (zh) 跨存储的磁盘快速安全克隆的方法、系统、设备和介质
JP2006301905A (ja) データミラーリングシステムおよびデータミラーリング方法
JP2013012137A (ja) ディスクミラーリングシステム及びその管理方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 14897806

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2017500888

Country of ref document: JP

Kind code of ref document: A

REEP Request for entry into the european phase

Ref document number: 2014897806

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 2014897806

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: DE