CN104317674A - Disk data backup method and device - Google Patents

Abstract

The invention provides a method and device for backing up disk data, which is applied to a disk array Raid with redundancy function, including: when it is detected that the computer reaches the unusable state threshold, according to the pre-recorded computer utilization rate and each time Determine the time period corresponding to the minimum utilization rate of the computer; in the time period corresponding to the determined minimum utilization rate of the computer, use offline backup technology to back up each disk data of the computer. The technical scheme of the invention saves computer resources and reduces maintenance costs.

Description

Method and device for backing up disk data

technical field

The invention relates to the field of data security, in particular to a method and device for backing up disk data.

Background technique

At present, with more and more cloud computing and big data applications, there are more and more physical and virtual devices. Compared with the past, with the increase of equipment, people pay more and more attention to the security of computer data. Customers hope that the data stored on their computers will always exist and will not be lost. This puts forward higher requirements for computer maintenance. Based on this purpose, in order to ensure the data security of users in the process of using computers, more stringent requirements are put forward for computer data backup and recovery.

At present, the solutions of various computer manufacturers generally include: through the monitoring of the status of the computer hard disk, the data security of the computer is realized. When the hard disk of the computer is damaged, a new hard disk is replaced in time, and the Raid function of the computer is used to protect the computer data. In this case, the maintenance intensity of the computer is high, and the frequency of inspections is high. If the hard disk that is alarmed is not replaced in time, data loss is likely to result, which brings huge losses to users. How to maximize the use of existing resources on the existing basis and provide users with a safe computer environment has become a problem that needs to be solved urgently.

Contents of the invention

In order to solve the above technical problems, the present invention provides a method and device for backing up disk data, which can save computer resources and reduce maintenance costs.

In order to achieve the object of the present invention, the present invention provides a kind of method of backing up disk data, is applied in the disk array (Raid) with redundancy function, comprises:

When it is detected that the computer reaches the unavailable state threshold, according to the one-to-one correspondence between the utilization rate of the computer recorded in advance and each time period, determine the time period corresponding to the minimum utilization rate of the computer;

During the time period corresponding to the determined minimum utilization rate of the computer, the off-line backup technology is used to back up the data on each disk of the computer.

Further, the method also includes: monitoring the status of each disk in the computer and recording the time point when each disk fails;

Wherein, the status of the disk includes: normal or failure.

Further, the method further includes: when detecting that the first disk fails, sending an alarm and prompting to replace the first disk.

Further, after the first disk is replaced, the method further includes:

Use the Raid function to recover data for the newly replaced hard disk.

Further, the determination of the time period corresponding to the minimum utilization rate of the computer includes: sorting the utilization rates of the computer in each time period, and sequentially selecting the minimum utilization rate of the computer; according to the pre-recorded computer utilization rate and The one-to-one correspondence between each time period obtains the time period corresponding to the lowest utilization rate of the computer.

The present invention also provides a device for backing up disk data, which is applied in a disk array (Raid) with redundancy function, including: a determination module and a software backup module; wherein,

The determination module is used to determine the time period corresponding to the minimum utilization rate of the computer according to the one-to-one correspondence between the pre-recorded computer utilization rate and each time period when it is detected that the computer reaches the unavailable state threshold;

The software backup module is used for backing up each disk data of the computer by using offline backup technology during the time period corresponding to the determined minimum utilization rate of the computer.

Further, the device further includes a state monitoring module, which is used to monitor the state of each disk in the computer and record the time point when each disk fails; wherein, the state of the disk includes: normal or failure.

Further, the device also includes an alarm module, which is used for sending out an alarm and prompting to replace the first disk when the state detection module detects that the first disk fails.

Further, the device also includes a hardware backup module, which is used to recover data for the newly replaced hard disk by using the Raid function after the first disk is replaced.

Further, the determination module is specifically used to: sort the utilization rates of the computer in each time period, and sequentially select the lowest utilization rate of the computer; according to the one-to-one correspondence between the pre-recorded computer utilization rate and each time period , to get the time period for which the computer was at its lowest utilization.

The technical solution of the present invention includes: when it is detected that the computer reaches the unavailable state threshold, according to the one-to-one correspondence between the pre-recorded computer utilization rate and each time period, determine the time period corresponding to the minimum utilization rate of the computer; In the time period corresponding to the lowest utilization rate of the computer, offline backup technology is used to back up each disk data of the computer. The technical scheme of the invention saves computer resources and reduces maintenance costs.

Description of drawings

The accompanying drawings described here are used to provide a further understanding of the present invention and constitute a part of the application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations to the present invention. In the attached picture:

Fig. 1 is the flowchart of the method for backup disk data of the present invention;

FIG. 2 is a schematic structural diagram of a device for backing up disk data according to the present invention.

Detailed ways

In order to make the purpose, technical solution and advantages of the present invention more clear, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

Fig. 1 is the flowchart of the method for backing up disk data of the present invention, is applied in the disk array (Raid) with redundant function, as shown in Fig. 1, comprises:

Step 101: When it is detected that the computer has reached the unavailable state threshold, according to the pre-recorded one-to-one correspondence between the utilization rate of the computer and each time period, determine the time period corresponding to the lowest utilization rate of the computer.

Wherein, the unavailable state of the computer refers to: the disk system of the computer crashes.

For example, take Raid5 configuration with three disks as an example. If the first disk fails, the computer can be used normally. When the second disk fails, the computer will be completely paralyzed. At this time, the computer is unavailable. When this second disk fails. It should be noted that how to monitor whether the computer reaches the threshold of the unavailable state is a conventional technical means well known to those skilled in the art, and will not be repeated here, and is not used to limit the present invention.

Before step 101, the method further includes: obtaining the utilization rate of the computer in each time period and recording the one-to-one correspondence between the utilization rate of the computer and each time period. as well as,

Monitor the status of each disk in the computer and record the time point when each disk fails; the status of the disk includes normal or failure.

It should be noted that how to obtain the utilization rate of the computer is a conventional technical means well known to those skilled in the art, and is not intended to limit the present invention.

Further, when a failure of the first disk is detected, an alarm is issued and a prompt is given to replace the first disk.

Further, after the first disk is replaced, the method further includes: using the Raid function to restore data for the newly replaced hard disk.

Wherein, determining the time period corresponding to the minimum utilization rate of the computer includes:

Sort the utilization rate of the computer in each time period, and select the lowest utilization rate of the computer in order; according to the one-to-one correspondence between the utilization rate of the computer recorded in advance and each time period, obtain the corresponding minimum utilization rate of the computer period.

Step 102: During the time period corresponding to the determined minimum utilization rate of the computer, use the off-line backup technology to back up each disk data of the computer.

Among them, according to the one-to-one correspondence between the utilization rate of the computer and time, the utilization rate of the computer in each time period is sorted, and the lowest utilization rate of the computer after sorting and its corresponding time period are obtained. Here, the corresponding Offline backup of failed disk data within a certain period of time.

For example, for example, it is obtained that the utilization rate of the computer is the lowest between 1:00 am and 5:00 am, restart the computing system at 1:00 am, perform an offline data backup of the server, and back up all data on the failed disk. data. After the backup is complete, restart the computer for the user to use.

It should be noted that the first disk and the second disk in the present invention do not limit the present invention. The reason why they are called the first disk indicates that the disk fails first.

In the method of the present invention, because the data has been fully backed up, even if the second disk fails or is damaged, and the Raid function cannot be used to recover data from the hardware level, all hard disks can be replaced and the Raid can be redone Next, use the data backed up offline to recover data from the software level.

Embodiment one

Take the computer using 3 disks, Disk1, Disk2 and Disk3 as an example, configure Raid5, and the first preset duration set by the device administrator is 7 days. During the use of the computer, the user assumes that Disk3 is damaged, and has sent an alarm notification to the device administrator, but the damaged Disk3 has not been replaced. On the third day after Disk3 was damaged, Disk2 also issued an alarm message, but Disk2 is still OK. use. At this time, it is necessary to use offline backup technology to back up the data on the computer. It is found that the utilization rate of the computer is the lowest between 1 am and 5 am, and the system is restarted at 1 am. Perform an offline data backup, backing up all data on that computer. After the backup is complete, restart the computer for the user to use. Because the data has been fully backed up, even if Disk2 is damaged and Raid5 cannot be used to restore data from the hardware level, you can use the backup data to restore data from the software level when all hard drives are replaced and Raid5 is redone .

Another situation is that only Disk3 is damaged, and the device has been used for more than 7 days, and Disk3 has not been replaced. At this time, the data on the computer will be backed up by offline backup technology.

Fig. 2 is a structural schematic diagram of the device for backing up disk data in the present invention, which is applied in a disk array (Raid) with redundancy function, as shown in Fig. 2 , including: a determination module and a software backup module. in,

The determination module is used to determine the time period corresponding to the minimum utilization rate of the computer according to the one-to-one correspondence between the pre-recorded computer utilization rate and each time period when it is detected that the computer reaches the unavailable state threshold.

Among them, the determination module is specifically used for:

Sort the utilization rate of the computer in each time period, and select the lowest utilization rate of the computer in order; according to the one-to-one correspondence between the utilization rate of the computer recorded in advance and each time period, obtain the corresponding minimum utilization rate of the computer period.

The software backup module is used for backing up each disk data of the computer by using offline backup technology during the time period corresponding to the determined minimum utilization rate of the computer.

Further, the device also includes a state monitoring module, which is used to monitor the state of each disk in the computer and record the time point when each disk fails; wherein the state of the disk includes normal or failure.

Further, the device also includes an alarm module, which is used for sending out an alarm and prompting to replace the first disk when the state detection module detects that the first disk fails.

Further, the device also includes a hardware backup module, which is used to recover data for the newly replaced hard disk by using the Raid function after the first disk is replaced.

Those skilled in the art can understand that all or part of the steps in the above method can be completed by instructing relevant hardware through a program, and the program can be stored in a computer-readable storage medium, such as a read-only memory, a magnetic disk or an optical disk, and the like. Optionally, all or part of the steps in the foregoing embodiments may also be implemented using one or more integrated circuits. Correspondingly, each module/unit in the foregoing embodiments may be implemented in the form of hardware, or may be implemented in the form of software function modules. This application is not limited to any specific form of combination of hardware and software.

The above descriptions are only preferred examples of the present invention, and are not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. A method for backing up disk data is applied to a disk array Raid with a redundancy function, and is characterized by comprising the following steps:

when the computer is monitored to reach an unavailable state threshold value, determining a time period corresponding to the lowest utilization rate of the computer according to the one-to-one correspondence relationship between the utilization rate of the computer and each time period, which is recorded in advance;

and in the time period corresponding to the determined lowest utilization rate of the computer, backing up each disk data of the computer by adopting an offline backup technology.

2. The method of claim 1, further comprising, prior to the method: monitoring the state of each disk in the computer and recording the time point of each disk failure;

wherein the disk states include: normal or failed.

3. The method of claim 1, further comprising: and when the first disk is monitored to be out of order, giving an alarm and prompting to replace the first disk.

4. The method of claim 3, wherein after replacing the first disk, the method further comprises:

and the Raid function is utilized to realize the recovery of data for the newly replaced hard disk.

5. The method of claim 1, wherein determining the time period corresponding to the lowest utilization of the computer comprises: sorting the utilization rates of the computer in each time period, and sequentially selecting the lowest utilization rate of the computer; and acquiring the time period corresponding to the lowest utilization rate of the computer according to the pre-recorded one-to-one correspondence relationship between the utilization rate of the computer and each time period.

6. A device for backing up disk data is applied to a disk array Raid with a redundancy function, and is characterized by comprising the following components: a determining module and a software backup module; wherein,

the determining module is used for determining the time period corresponding to the lowest utilization rate of the computer according to the one-to-one correspondence relationship between the utilization rate of the computer and each time period which is recorded in advance when the computer is monitored to reach the unavailable state threshold value;

and the software backup module is used for backing up each disk data of the computer by adopting an offline backup technology in a time period corresponding to the determined lowest utilization rate of the computer.

7. The device of claim 6, further comprising a status monitoring module for monitoring the status of each disk in the computer and recording the time point of failure of each disk; wherein the disk states include: normal or failed.

8. The apparatus according to claim 6, further comprising an alarm module for giving an alarm and prompting to replace the first disk when the status detection module detects that the first disk has a fault.

9. The apparatus of claim 9, further comprising a hardware backup module, configured to, after the first disk is replaced, recover data for the newly replaced hard disk by using the Raid function.

10. The apparatus of claim 6, wherein the determining module is specifically configured to: sorting the utilization rates of the computer in each time period, and sequentially selecting the lowest utilization rate of the computer; and acquiring the time period corresponding to the lowest utilization rate of the computer according to the pre-recorded one-to-one correspondence relationship between the utilization rate of the computer and each time period.