CN110633260A - NAS storage data continuous protection method and protection system - Google Patents
NAS storage data continuous protection method and protection system Download PDFInfo
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- CN110633260A CN110633260A CN201910725736.8A CN201910725736A CN110633260A CN 110633260 A CN110633260 A CN 110633260A CN 201910725736 A CN201910725736 A CN 201910725736A CN 110633260 A CN110633260 A CN 110633260A
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- 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
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/10—File systems; File servers
- G06F16/18—File system types
- G06F16/182—Distributed file systems
- G06F16/1824—Distributed file systems implemented using Network-attached Storage [NAS] architecture
- G06F16/1827—Management specifically adapted to NAS
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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
Abstract
The invention relates to a continuous protection method and a continuous protection system for NAS storage data, wherein the method comprises the following steps of carrying out data backup and data recovery on NAS storage, and the data backup comprises the following steps: mirror image binding is carried out on ports of the NAS storage and the NAS backup equipment, data backup and snapshot of backup data are completed, and a data backup process is achieved; the data recovery comprises: and acquiring a time point expected by a client, creating a clone volume which stores all recovery data on the corresponding snapshot, and mounting the clone volume to the client to realize the data recovery process. Compared with the prior art, the invention stores data by mirror image binding, recovers data by adopting a mounting mode, replaces the traditional mode of NDMP protocol communication, safely and efficiently protects NAS storage data, and has high NAS storage data compatibility.
Description
Technical Field
The present invention relates to protection of storage data, and in particular, to a method and a system for continuously protecting NAS storage data.
Background
In the traditional storage industry, NAS is based on smb (server Message block), cifs (common Internet File System) to provide a File sharing service supporting posix (portable Operating System Interface of unix) protocol, and is a product provided by all traditional storage manufacturers, even a product that must be provided. The NAS solves various problems of file storage, hierarchical authority management, high-performance disk reading and writing, high-bandwidth network input and output, data security and the like.
Since NAS solves the substantial problem of data usage by many enterprises, a large number of enterprises store much data on NAS. The data is the IT supporting foundation of the enterprise, which is very important for the enterprise, and how to efficiently protect the data on the NAS is a common target. Although the industry provides a standard protocol of NDMP (network data management protocol), the NDMP has different versions and different implementation forms of different storage vendors, so that a backup scheme using the NDMP needs to be compatible with different storage vendors one by one, which increases difficulty and complexity of NAS data protection, and the NDMP has some performance problems, for example, after file data on the NAS storage reaches a certain order of magnitude (1000 ten thousand), the backup performance using the NDMP is very poor; for example, after a full backup is performed by using the NDMP scheme, at most 8 incremental backups can be supported, and the ninth incremental backup fails.
In summary, the NAS has a wide application range, but data on the NAS storage has no efficient protection mechanism. The invention provides a method for continuously protecting NAS storage data, which aims to solve the problems of difficult NAS storage data protection and low efficiency.
Disclosure of Invention
The present invention provides a method and a system for continuously protecting NAS storage data to overcome the above-mentioned drawbacks of the prior art.
The purpose of the invention can be realized by the following technical scheme:
a continuous protection method for NAS storage data comprises the steps of carrying out data backup and data recovery on NAS storage,
the data backup comprises the following steps: mirror image binding is carried out on ports of the NAS storage and the NAS backup equipment, data backup and snapshot of backup data are completed, and a data backup process is achieved;
the data recovery comprises: and acquiring a time point expected by a client, creating a clone volume which stores all recovery data on the corresponding snapshot, and mounting the clone volume to the client to realize the data recovery process.
Further, the mirror binding specifically includes: and by the port mirroring function of the switch, mirroring the port accessed by the NAS storage data and the port of the NAS backup equipment for receiving the data. A copy of all packets of one port is sent to the other port.
Further, the backup of the data and the snapshot of the backup data specifically include the following steps:
s101: the data access of the NAS storage is realized by configuring address information and user password information of the NAS storage, wherein the address information and the user password information comprise an IP address, a user name and a password of the NAS storage and an NAS data volume path to be protected;
s102: carrying out full backup on the NAS volume to be backed up in the NAS storage;
s103: capturing and analyzing the NAS data packet in real time, and performing incremental backup on the analyzed NAS data packet; by the method, the changed data on the NAS storage can be captured in real time, and the changed data is recorded at any time, so that the permanent increment effect of the NAS storage is realized, and the RPO of the client NAS storage is reduced to be close to 0;
s104: snapshots are periodically taken of the backup data.
Further, the full backup includes storing the backup data in a native format encrypted manner.
Further, the data backup further comprises deleting snapshots exceeding a retention period.
Further, the creating of the clone volume storing all the recovery data on the corresponding snapshot specifically includes the following steps:
s201: creating a clone volume on a snapshot where data to be restored is located;
s202: and writing any IO data to be recovered back to the clone volume, and obtaining the clone volume storing all the recovered data until the IO time point is the same as the time point expected by the client, thereby realizing the recovery of the data of any time point of the NAS storage data and being based on the IO level of the file.
A NAS storage data persistence protection system, comprising:
the switch image configuration module: the NAS backup device is used for carrying out mirror image binding on ports of the NAS storage and the NAS backup device;
the NAS data packet analysis module: the device is used for capturing and analyzing the NAS data packet;
NAS data backup module: the NAS data packet analysis module is used for carrying out full backup on NAS storage data and carrying out incremental backup on data analyzed by the NAS data packet analysis module;
NAS data snapshot module: the snapshot is used for periodically executing the snapshot on the backup data and deleting the snapshot exceeding the retention period;
the NAS data recovery module: the system is used for writing back any IO of the backup NAS data to the clone volume until the time point of the IO is consistent with the time point expected by a customer;
NAS data mounting module: and the production machine is used for mounting the NAS data to be recovered to the client in the form of the whole volume.
Further, the protocols that the NAS packet parsing module supports parsing include NFS2, NFS3, NFS4, CIFS, and SMB.
Further, the specific operation process of the switch mirror configuration module is as follows: and by the port mirroring function of the switch, mirroring the port accessed by the NAS storage data and the port of the NAS backup equipment for receiving the data.
Further, the process of performing full backup in the NAS data backup module includes storing backup data in a native format encrypted manner.
Compared with the prior art, the invention has the following advantages:
(1) the NAS storage data continuous protection method comprises data storage and data recovery, and the NAS storage and the ports of NAS backup equipment are subjected to mirror image binding in the data storage process, and clone volumes which store all recovery data are mounted in the data recovery process, so that the conventional NDMP protocol communication mode is replaced, and the NAS storage data is safely and efficiently protected.
(2) The data backup process comprises full backup and incremental backup, continuous data protection of any NAS storage is realized, and the RPO of the client NAS storage is reduced to be close to 0.
(3) The data recovery process comprises the steps of obtaining a time point expected by a client, creating a clone volume which stores all recovery data on a corresponding snapshot, realizing the recovery of data of any time point of NAS storage data, and based on the IO level of a file.
(4) The data recovery process of the invention realizes that the RTO of the client NAS storage data is also reduced to be close to 0 by a mounting recovery mode.
(5) The NAS data packet analysis module supports analysis protocols including NFS2, NFS3, NFS4, CIFS and SMB, and has high compatibility to NAS storage data protection.
Drawings
FIG. 1 is a schematic flow chart of a NAS storage data continuous protection method according to the present invention;
FIG. 2 is a block diagram of an NAS backup device according to the present invention;
FIG. 3 is a schematic diagram of a switch mirror configuration module according to the present invention;
FIG. 4 is a schematic flow chart of NAS data backup according to an embodiment of the present invention;
fig. 5 is a flow chart illustrating NAS data recovery according to an embodiment of the present invention.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
Example 1
The embodiment is a continuous protection method of NAS storage data, which can achieve the protection of the NAS storage data compatible with any storage manufacturer; data backup of permanent increment of NAS storage data can be realized; the change data of the NAS can be continuously protected in real time, and the NAS data RPO (recovery Point objective) of a client tends to be 0; mounting recovery can be carried out on any IO of NAS data at any time; data needed by a client can be quickly recovered for the client to use in a mounting mode, and the purpose that the RTO (recovery Time objective) of NAS data tends to be 0 is achieved. The five objectives mentioned above are of great value to the user, both in terms of compatibility, efficiency of protecting NAS storage data, and in terms of RPO and RTO of NAS data protection. The method does not pay attention to manufacturers of NAS storage any more, does not pay attention to the difference of internal implementation of the manufacturers of the NAS storage, and can protect the data of the manufacturers. The method can realize permanent increment and real-time continuous protection of the change of the NAS storage data, and can reduce the RPO to the maximum extent, so that the RPO tends to be 0. According to the method, the data of the NAS can be mounted on a production machine of the client in a mounting mode for the client to use, the data is not required to be retrieved through a long data recovery process, and the RTO can also approach 0.
As shown in fig. 1, in the NAS storage data continuous protection method of this embodiment, an NAS backup device is added, mirror-image binding is performed on ports of an NAS storage and the NAS backup device, then data backup and data recovery are performed on the NAS storage, and the mirror-image binding, the data backup and the data recovery are described in detail below:
1. mirror binding
And by the port mirroring function of the switch, mirroring the port accessed by the NAS storage data and the port of the NAS backup equipment for receiving the data. A copy of all packets of one port is sent to the other port. After mirroring, the switch will automatically send the data packet to the port of the backup device.
2. Data backup
The data backup process comprises the following steps:
s101: the data access of the NAS storage is realized by configuring address information and user password information of the NAS storage, wherein the address information and the user password information comprise an IP address, a user name and a password of the NAS storage and an NAS data volume path to be protected;
s102: mounting the NAS volume to be backed up on NAS backup equipment, and carrying out full backup on the NAS volume to be backed up in NAS storage, wherein the full backup comprises the step of storing backup data in a native format encryption mode;
s103: capturing and analyzing the NAS data packet in real time through NAS backup equipment, and performing incremental backup on the analyzed NAS data packet; by the method, the changed data on the NAS storage can be captured in real time, and the changed data is recorded at any time, so that the permanent increment effect of the NAS storage is realized, and the RPO of the client NAS storage is reduced to be close to 0;
s104: periodically, snapshots are performed on the backup data, and snapshots exceeding a retention period are deleted.
3. Data recovery
The data recovery process comprises the following steps:
s201: acquiring a time point expected by a client;
s202: finding a snapshot time point prior to a time point desired by a client, and creating a clone volume at the snapshot time point;
s203: writing any IO data to be recovered back to the clone volume, and obtaining the clone volume storing all the recovered data until the IO time point is the same as the clone deadline time point, thereby realizing the recovery of the data of any time point of NAS storage data and being based on the IO level of the file;
s204: mounting the clone volume stored with all recovery data on a production machine of a client;
s205: the client uses the mounted NAS data directly at the production server.
Example 2
The embodiment is a continuous protection system for NAS storage data, which includes a NAS backup device 1, and the system is used for performing data storage and data recovery on data in a NAS storage 2, and the system performs mirror image binding on ports of the NAS storage and the NAS backup device on a switch 3, so that the NAS backup device 1 can continuously protect the data in the NAS storage 2, thereby implementing a brand new protection scheme for the NAS storage data, and bringing many revolutionary benefits for NAS storage backup and recovery, thereby bringing more values to a user.
The NAS backup apparatus 1, data storage, and data restoration are described in detail below:
1. NAS backup device 1
As shown in fig. 2, the NAS backup apparatus 1 is an apparatus integrating software and hardware, and the hardware includes a storage for storing data and a server apparatus completed as a whole. The software comprises:
the switch image configuration module: as shown in fig. 3, the method is used for performing mirror binding on ports of the NAS storage and the NAS backup device, and specifically includes: through the port mirroring function of the switch 3, the port accessed by the data in the NAS storage 2 and the port received by the data in the NAS backup device 1 are mirrored. Copying all data packets of one port and sending the data packets to the other port;
NAS packet parsing module 101: the protocol used for capturing the NAS data packet and parsing the real data of the NAS data packet includes, but is not limited to, NFS2(Network File System), NFS3, NFS4, CIFS, smb (server Message block), and the like.
NAS data backup module 102: the NAS storage 2 data backup module is used for carrying out full backup on the NAS storage 2 data and carrying out incremental backup on the data analyzed by the NAS data packet analysis module;
NAS data snapshot module 103: the snapshot is used for periodically executing the snapshot on the backup data and deleting the snapshot exceeding the retention period;
NAS data recovery module 104: the system is used for writing back any IO of the backup NAS data to the clone volume until the time point of the IO is consistent with the time point expected by a customer;
NAS data mount module 105: and the production machine is used for mounting the NAS data to be recovered to the client in the form of the whole volume.
2. NAS data storage
As shown in fig. 4, the NAS data storage process includes the following steps:
s101: mirror image binding is carried out on the data ports of the NAS storage 2 and the NAS backup equipment 1 on the interactive machine through a switch mirror image configuration module;
s102: configuring an IP address, a user name, a password and an NAS data volume path to be protected of an NAS storage 2 to be protected on an NAS backup device 1;
s103: mounting the NAS volume to be backed up on the NAS backup device 1 through the NAS data backup module 102, performing a full backup on the mounted NAS data once, and storing the NAS data in a native format or in an encrypted manner;
s104: capturing and analyzing the NAS data packet in real time through the NAS data packet analyzing module 101, and storing all the change data according to the analyzing result;
s105: the NAS data snapshot module 103 is used for periodically performing snapshot management on the backed-up NAS data, including creating a snapshot and deleting a history snapshot.
3. NAS data recovery
As shown in fig. 5, the NAS data recovery process includes the following steps:
s201: selecting a time point to be restored (namely a time point expected by a client) on the NAS backup device 1;
s202: creating a clone volume on a snapshot where data to be restored is located through the NAS data snapshot module 103;
s203: writing back any IO data to be restored to the clone volume through the NAS data restoration module 104 until the IO time point is the same as the time point selected by the customer;
s204: the clone volume to be restored is mounted on the production server (i.e., the production machine) of the client by the NAS data mounting module 105.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (10)
1. A continuous protection method for NAS storage data is characterized in that the method comprises the steps of carrying out data backup and data recovery on NAS storage,
the data backup comprises the following steps: mirror image binding is carried out on ports of the NAS storage and the NAS backup equipment, data backup and snapshot of backup data are completed, and a data backup process is achieved;
the data recovery comprises: and acquiring a time point expected by a client, creating a clone volume which stores all recovery data on the corresponding snapshot, and mounting the clone volume to the client to realize the data recovery process.
2. The NAS storage data continuous protection method according to claim 1, wherein the mirror binding specifically is: and by the port mirroring function of the switch, mirroring the port accessed by the NAS storage data and the port of the NAS backup equipment for receiving the data.
3. The NAS storage data continuous protection method according to claim 1, wherein the backup of the data and the snapshot of the backup data specifically include the following steps:
s101: the data access of the NAS storage is realized by configuring the address information and the user password information of the NAS storage;
s102: carrying out full backup on the NAS volume to be backed up in the NAS storage;
s103: capturing and analyzing the NAS data packet in real time, and performing incremental backup on the analyzed NAS data packet;
s104: snapshots are periodically taken of the backup data.
4. The method of claim 3, wherein the full backup comprises storing the backup data in a native format encrypted manner.
5. The method of claim 3, wherein the data backup further comprises deleting snapshots that exceed a retention period.
6. The NAS storage data continuous protection method according to claim 1, wherein the creating of the clone volume storing all recovery data on the corresponding snapshot specifically includes the following steps:
s201: creating a clone volume on a snapshot where data to be restored is located;
s202: and writing any IO data to be restored back to the clone volume until the IO time point is the same as the time point expected by the client, and acquiring the clone volume storing all the restored data.
7. A system for persistent protection of NAS storage data, comprising:
the switch mirror image configuration module is used for carrying out mirror image binding on ports of the NAS storage and the NAS backup equipment;
the NAS data packet analyzing module is used for capturing and analyzing the NAS data packet;
the NAS data backup module is used for carrying out full backup on NAS storage data and carrying out incremental backup on data analyzed by the NAS data packet analysis module;
the NAS data snapshot module is used for periodically carrying out snapshot on the backup data and deleting the snapshots exceeding the retention period;
the NAS data recovery module is used for writing back any IO of the backup NAS data to the clone volume until the time point of the IO is consistent with the time point expected by the customer;
and the NAS data mounting module is used for mounting the NAS data to be recovered to the production machine of the client in the form of the whole volume.
8. The NAS storage data persistence protection system according to claim 7, wherein the protocol supporting parsing by the NAS packet parsing module includes NFS2, NFS3, NFS4, CIFS and SMB.
9. The NAS storage data continuous protection system according to claim 7, wherein the specific operation process of the switch mirror configuration module is as follows: and by the port mirroring function of the switch, mirroring the port accessed by the NAS storage data and the port of the NAS backup equipment for receiving the data.
10. The NAS storage data continuous protection system of claim 7, wherein the process of performing full backup in the NAS data backup module comprises storing backup data in a native format encrypted manner.
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| CN116610501A (en) * | 2023-07-20 | 2023-08-18 | 深圳市科力锐科技有限公司 | NAS data reduction method, device, equipment and storage medium |
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