CN112286735B - Backup success rate determining method, device, equipment and storage medium - Google Patents
Backup success rate determining method, device, equipment and storage medium Download PDFInfo
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- CN112286735B CN112286735B CN202011552373.1A CN202011552373A CN112286735B CN 112286735 B CN112286735 B CN 112286735B CN 202011552373 A CN202011552373 A CN 202011552373A CN 112286735 B CN112286735 B CN 112286735B
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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
- G06F11/1448—Management of the data involved in backup or backup restore
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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
- G06F11/1458—Management of the backup or restore process
- G06F11/1464—Management of the backup or restore process for networked environments
Abstract
The invention discloses a method, a device, equipment and a storage medium for determining a backup success rate, and belongs to the technical field of data security. The method comprises the steps of firstly determining the number of theoretical backup points which are successfully backed up in a preset time period based on a preset backup strategy, then counting the number of actual backup points which are successfully backed up in the preset time period by a target backup source host based on the preset backup strategy, and finally determining the backup success rate of the target backup source host in the preset time period based on the preset backup strategy based on the actual backup point number and the theoretical backup point number.
Description
Technical Field
The present invention relates to the field of data security technologies, and in particular, to a method, an apparatus, a device, and a storage medium for determining a backup success rate.
Background
With the development of internet technology, the degree of dependence of production, office, management and operation of an organization on an IT application system is higher and higher, and the application system and data become core assets of the organization. In order to deal with the challenge of data loss caused by host faults, system errors, virus attacks and the like, backup protection with different backup frequency strategies needs to be executed on all IT application systems to ensure that data is not lost and can be returned to the previous backup time point.
No matter the file replication technology or the disk data block replication technology is adopted for backup, when the whole machine, the virtual machine, the volume, the file system, the folder and the like of each host are backed up, after the relevant strategy configuration and input of the backup are completed, the backup host and the backup system start to execute the corresponding backup task, but due to the limitation of the backup data volume, the transmission network bandwidth, the system resource condition of the source host, the resource condition of the backup host and the like, the phenomenon that the backup task completion condition and the input backup strategy have larger deviation can occur, such as: setting the backup time interval value (i.e. RPO value) to 5 minutes, although each backup task can be completed and the time interval between each backup point is greater than 5 minutes, which causes the fact that the preset backup strategy is invalid, the RPO value exceeds the standard, and the disaster recovery protection effect is seriously affected, the user is difficult to know the actual situation of the backup and can only obtain the result of whether the backup is successful, so that the adjustment of the backup strategy is inconvenient according to the actual situation of the backup.
Disclosure of Invention
The invention mainly aims to provide a method, a device, equipment and a storage medium for determining a backup success rate, and aims to solve the technical problems that in the prior art, a user cannot know the actual situation of backup easily and cannot adjust a backup strategy conveniently according to the actual situation of backup.
In order to achieve the above object, the present invention provides a method for determining a backup success rate, which comprises the following steps:
determining the number of theoretical backup points which are successfully backed up in a preset time period based on a preset backup strategy;
counting the number of actual backup points successfully backed up by the target backup source host in a preset time period based on the preset backup strategy;
and determining the backup success rate of the target backup source host in a preset time period based on a preset backup strategy based on the actual backup point number and the theoretical backup point number.
Preferably, the step of counting the number of actual backup points successfully backed up by the target backup source host in a preset time period based on the preset backup policy specifically includes:
determining a time interval between actual backup points of the target backup source host in a preset time period based on the preset backup strategy;
comparing each time interval with the preset time interval value;
and counting the number of intervals of the time intervals equal to the preset time interval value, and taking the counted number of intervals as the number of actual backup points successfully backed up by the target backup source host in a preset time period based on the preset backup strategy.
Preferably, the step of determining the backup success rate of the target backup source host based on a preset backup strategy within a preset time period based on the actual number of backup points and the theoretical number of backup points specifically includes:
calculating the ratio of the number of the actual backup points to the number of the theoretical backup points;
and taking the calculated ratio as the backup success rate of the target backup source host in a preset time period based on a preset backup strategy.
Preferably, before the step of determining the number of theoretical backup points that are successfully backed up within a preset time period based on a preset backup policy, the method for determining the backup success rate further includes:
and when a user acquires an instruction based on the success rate triggered by the data backup interface, executing the step of determining the number of the theoretical backup points successfully backed up in a preset time period based on the preset backup strategy.
Preferably, after the step of determining the backup success rate of the target backup source host based on the preset backup strategy within the preset time period based on the actual number of backup points and the theoretical number of backup points, the method for determining the backup success rate further includes:
determining the variation trend of the backup parameters in the preset time period;
and displaying the change trend of the backup parameters and the backup success rate.
Preferably, the step of determining a variation trend of the backup parameter within the preset time period specifically includes:
obtaining backup parameters in a preset time period;
performing curve fitting according to the backup parameters to generate corresponding parameter curves;
and determining the change trend of the backup parameters in the preset time period based on the parameter curve.
Preferably, the backup parameters include: at least one of resource occupancy rate of the backup source host, data amount to be backed up, transmission network bandwidth occupancy rate, and resource occupancy rate of the backup host.
In addition, to achieve the above object, the present invention further provides a backup success rate determining device, including: a memory, a processor and a backup success rate determination program stored on the memory and executable on the processor, the backup success rate determination program being configured to implement the steps of the backup success rate determination method as described above.
In addition, to achieve the above object, the present invention further provides a computer readable storage medium having a backup success rate determining program stored thereon, where the backup success rate determining program, when executed by a processor, implements the steps of the backup success rate determining method as described above.
In addition, to achieve the above object, the present invention further provides a backup success rate determining device, including:
the theoretical determination module is used for determining the number of theoretical backup points successfully backed up in a preset time period based on a preset backup strategy;
the actual determination module is used for counting the number of actual backup points successfully backed up by the target backup source host in a preset time period based on the preset backup strategy;
and the success rate determining module is used for determining the backup success rate of the target backup source host in a preset time period based on a preset backup strategy based on the actual backup point number and the theoretical backup point number.
The method comprises the steps of firstly determining the number of theoretical backup points which are successfully backed up in a preset time period based on a preset backup strategy, then counting the number of actual backup points which are successfully backed up in the preset time period by a target backup source host based on the preset backup strategy, and finally determining the backup success rate of the target backup source host in the preset time period based on the preset backup strategy based on the actual backup point number and the theoretical backup point number.
Drawings
Fig. 1 is a schematic structural diagram of a backup success rate determining device in a hardware operating environment according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating a backup success rate determining apparatus method according to a first embodiment of the present invention;
fig. 3 is a flowchart illustrating a backup success rate determining apparatus method according to a second embodiment of the present invention;
fig. 4 is a block diagram of a backup success rate determining device according to a first embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, the backup success rate determining apparatus may include: a processor 1001, such as a CPU, a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface). The memory 1005 may be a high-speed RAM memory or a non-volatile memory (e.g., a magnetic disk memory). The memory 1005 may alternatively be a storage device separate from the processor 1001.
Those skilled in the art will appreciate that the configuration shown in fig. 1 does not constitute a limitation of the backup success rate determining apparatus, and may include more or less components than those shown, or combine some components, or a different arrangement of components.
As shown in fig. 1, a memory 1005, which is a kind of computer storage medium, may include therein an operating system, a network communication module, a user interface module, and a backup success rate determining program.
In the backup success rate determining apparatus shown in fig. 1, the network interface 1004 is mainly used for data communication with an external network; the user interface 1003 is mainly used for receiving input instructions of a user; the backup success rate determining apparatus calls a backup success rate determining program stored in the memory 1005 through the processor 1001 and performs the following operations:
determining the number of theoretical backup points which are successfully backed up in a preset time period based on a preset backup strategy;
counting the number of actual backup points successfully backed up by the target backup source host in a preset time period based on the preset backup strategy;
and determining the backup success rate of the target backup source host in a preset time period based on a preset backup strategy based on the actual backup point number and the theoretical backup point number.
Further, the processor 1001 may call the backup success rate determination program stored in the memory 1005, and also perform the following operations:
determining a time interval between actual backup points of the target backup source host in a preset time period based on the preset backup strategy;
comparing each time interval with the preset time interval value;
and counting the number of intervals of the time intervals equal to the preset time interval value, and taking the counted number of intervals as the number of actual backup points successfully backed up by the target backup source host in a preset time period based on the preset backup strategy.
Further, the processor 1001 may call the backup success rate determination program stored in the memory 1005, and also perform the following operations:
calculating the ratio of the number of the actual backup points to the number of the theoretical backup points;
and taking the calculated ratio as the backup success rate of the target backup source host in a preset time period based on a preset backup strategy.
Further, the processor 1001 may call the backup success rate determination program stored in the memory 1005, and also perform the following operations:
and when a user acquires an instruction based on the success rate triggered by the data backup interface, executing the step of determining the number of the theoretical backup points successfully backed up in a preset time period based on the preset backup strategy.
Further, the processor 1001 may call the backup success rate determination program stored in the memory 1005, and also perform the following operations:
determining the variation trend of the backup parameters in the preset time period;
and displaying the change trend of the backup parameters and the backup success rate.
Further, the processor 1001 may call the backup success rate determination program stored in the memory 1005, and also perform the following operations:
obtaining backup parameters in a preset time period;
performing curve fitting according to the backup parameters to generate corresponding parameter curves;
and determining the change trend of the backup parameters in the preset time period based on the parameter curve.
According to the scheme, the number of theoretical backup points successfully backed up in the preset time period is determined based on the preset backup strategy, then the number of actual backup points successfully backed up in the preset time period by the target backup source host based on the preset backup strategy is counted, and finally the backup success rate of the target backup source host based on the preset backup strategy in the preset time period is determined based on the actual backup point number and the theoretical backup point number.
Based on the hardware structure, the embodiment of the method for determining the backup success rate is provided.
Referring to fig. 2, fig. 2 is a flowchart illustrating a backup success rate determining method according to a first embodiment of the present invention.
In a first embodiment, the backup success rate determination method includes the following steps:
s10: and determining the number of theoretical backup points which are successfully backed up in a preset time period based on a preset backup strategy.
It can be understood that the preset backup policy generally includes a preset backup start time and a preset backup time interval value, and of course, may also include only the preset backup time interval value, and the backup start time is counted from the time confirmed by the preset backup policy, which is not limited in this embodiment.
In a specific implementation, the time length of the preset time period may be set as required, for example: hours, days, weeks, months, etc., which the present embodiment does not limit.
It should be understood that, for a theoretical number of backup points, it belongs to a theoretical level of backup points, such as: the preset time period is 24 hours, and the preset backup time interval value in the preset backup strategy is 30 minutes, at this time, the number of the theoretical backup points for which backup is successful in the preset time period can be determined to be 48.
It should be noted that, generally, the triggering of the backup is implemented based on a data backup interface on an application program or a web page, and in order to facilitate the user to perform the operation, in this embodiment, the method of this embodiment may be triggered on the data backup interface, that is, when the user obtains the instruction based on the success rate triggered by the data backup interface, step S10 is executed.
S20: and counting the number of actual backup points successfully backed up by the target backup source host in a preset time period based on the preset backup strategy.
It should be noted that the target backup source host is a source host that needs to perform data backup, that is, data in the backup source host needs to be backed up.
It can be understood that, in order to quickly count the number of actual backup points successfully backed up by the target backup source host within a preset time period based on the preset backup policy, in this embodiment, a time interval between actual backup points of the target backup source host within the preset time period based on the preset backup policy may be first determined, then each time interval is compared with the preset time interval value, and finally, the number of intervals of the time interval equal to the preset time interval value is counted, and the counted number of intervals is used as the number of actual backup points successfully backed up by the target backup source host within the preset time period based on the preset backup policy.
For example: the time interval between each actual backup point is 5min, 6min, 5min, 10min, 12min, 5min and 5min, and the number of actual backup points can be determined to be 5 at this time, assuming that the preset time interval value is 5 min.
In a specific implementation, there is no absolute sequence between step S10 and step S20, that is, step S10 and step S20 may be performed in parallel, step S10 may precede step S20, or step S20 may precede step S10, which is not limited in this embodiment.
S30: and determining the backup success rate of the target backup source host in a preset time period based on a preset backup strategy based on the actual backup point number and the theoretical backup point number.
In the prior art, only the result of whether the backup is successful or not can be obtained, that is, for the backup strategy in which the preset time interval value is 5min, if the time intervals are all 5min, the result of the backup is successful, a time interval greater than 5min exists in the time intervals, for example, a time interval of 6min occurs, the result of the backup that the backup is unsuccessful can be obtained, that is, in the prior art, only whether the backup is successful or not is distinguished, but the actual situation of the backup cannot be determined.
In order to ensure the correctness of data when the backup success rate is specifically determined, in this embodiment, a ratio between the actual number of backup points and the theoretical number of backup points is calculated first, and then the calculated ratio is used as the backup success rate of the target backup source host in a preset time period based on a preset backup strategy.
Assuming that the actual number of backup points is 24 and the theoretical number of backup points is 48, at this time, the ratio between the actual number of backup points and the theoretical number of backup points is 50%, so that the ratio success rate in the preset time period is 50%.
It should be noted that, because the backup success rate is determined by the theoretical number of backup points and the actual number of backup points, the actual situation of backup can be reflected, and therefore, the user can adjust the backup strategy based on the backup success rate, for example: under the condition that the backup success rate is 20%, at this time, it indicates that the preset backup strategy cannot be guaranteed, and therefore, the user can extend the RPO value in the preset backup strategy (for example, adjust the RPO value from 5 minutes to 10 minutes); under the condition that the backup success rate is 90%, at this time, it indicates that the preset backup strategy can be basically guaranteed, and therefore, the user can keep the RPO value in the preset backup strategy unchanged.
In this embodiment, first, the theoretical number of backup points successfully backed up in a preset time period is determined based on a preset backup strategy, then, the actual number of backup points successfully backed up in the preset time period by the target backup source host based on the preset backup strategy is counted, and finally, the backup success rate of the target backup source host in the preset time period based on the preset backup strategy is determined based on the actual number of backup points and the theoretical number of backup points.
Referring to fig. 3, fig. 3 is a flowchart illustrating a method for determining a backup success rate according to a second embodiment of the present invention, and the method for determining a backup success rate according to the second embodiment of the present invention is provided based on the embodiment shown in fig. 2.
In the second embodiment, after step S30, the backup success rate determining method further includes:
s40: and determining the change trend of the backup parameters in the preset time period.
It should be noted that, in a specific implementation, in order to facilitate determining a variation trend of the backup parameter within the preset time period, in this embodiment, the backup parameter within the preset time period may be obtained first, then curve fitting is performed according to the backup parameter to generate a corresponding parameter curve, and finally the variation trend of the backup parameter within the preset time period is determined based on the parameter curve.
For example: the data volume to be backed up in the preset time period is 100MB, 104MB, 108MB, 112MB, 116MB, 120MB and 124MB, at this time, the corresponding parameter curve may be determined to be y =4x +100, where y is the data volume to be backed up, and x is the serial number of the backup point, and at this time, the change trend of the backup parameter in the preset time period may be determined to be the increase of the data volume to be backed up based on the parameter curve.
It should be understood that the backup parameter is corresponding parameter information when implementing data backup, and it is usually at least one of resource occupancy rate of a backup source host (i.e. occupancy rate of resources such as CPU or memory), data amount to be backed up, transmission network bandwidth occupancy rate, and resource occupancy rate of a backup host, where the backup host is a target host for data backup, that is, data to be backed up is stored in the backup host.
S50: and displaying the change trend of the backup parameters and the backup success rate.
It can be understood that, as for the backup success rate, although it can reflect the actual situation of backup, it cannot analyze the reason affecting the backup success rate, and only can adjust the RPO value of the preset backup strategy, but it is difficult to improve the backup success rate without adjusting the RPO value of the preset backup strategy, in order to solve the problem, in this embodiment, after determining the backup success rate, the change trend of the backup parameter within the preset time period is determined, so that after displaying the change trend of the backup parameter and the backup success rate, the user can know the change trend of the backup parameter and the backup success rate, at this time, the user can determine the reason affecting the backup success rate based on the change trend of the backup parameter and the backup success rate, and thus, the user can adjust the corresponding backup parameter, without adjusting the RPO value of the preset backup strategy, and the success rate of backup is improved.
Assuming that the preset backup strategy set by the user is backed up once every five minutes, and the preset time period is one week, at this time, a parameter standard corresponding to one-time five-minute backup is determined based on historical backup data, if the parameter standard corresponds to a resource occupancy rate of less than 20%, the amount of data to be backed up is less than 1GB, a transmission network bandwidth occupancy rate is less than 30%, and a resource occupancy rate of the backup host is less than 25%, and if other backup parameters all satisfy the parameter standard, only if the resource occupancy rate changes in a trend that the resource occupancy rate is continuously over 30% and gradually increases, the user can determine that the reason influencing the backup success rate is that the resource occupancy rate is too high, at this time, the user can reduce the resource occupancy rate by closing some application programs, and can also perform hardware upgrade on the device, thereby reducing the resource occupancy rate, and further under the condition that the RPO value of the preset backup strategy is not adjusted, and the success rate of backup is improved.
The embodiment not only determines the success rate of backup, but also determines the change trend of the backup parameters in the preset time period, so that a user can determine the reason influencing the success rate of backup based on the change trend of the backup parameters and the success rate of backup, further adjust the corresponding backup parameters, and improve the success rate of backup without adjusting the RPO value of the preset backup strategy.
In addition, an embodiment of the present invention further provides a computer-readable storage medium, where a backup success rate determining program is stored on the computer-readable storage medium, and when executed by a processor, the backup success rate determining program implements the following operations:
determining the number of theoretical backup points which are successfully backed up in a preset time period based on a preset backup strategy;
counting the number of actual backup points successfully backed up by the target backup source host in a preset time period based on the preset backup strategy;
and determining the backup success rate of the target backup source host in a preset time period based on a preset backup strategy based on the actual backup point number and the theoretical backup point number.
The backup success rate determining program of this embodiment may also be used to implement the steps of the backup success rate determining method, which is not described herein again.
In addition, an embodiment of the present invention further provides a backup success rate determining apparatus, and referring to fig. 4, the apparatus includes:
a theoretical determination module 401, configured to determine, based on a preset backup policy, the number of theoretical backup points successfully backed up in a preset time period;
an actual determining module 402, configured to count the number of actual backup points successfully backed up by the target backup source host within a preset time period based on the preset backup policy;
a success rate determining module 403, configured to determine, based on the actual number of backup points and the theoretical number of backup points, a backup success rate of the target backup source host in a preset time period based on a preset backup policy.
Each module of this embodiment may also be used to implement each step of the above backup success rate determining method, which is not described herein again.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. A method for determining a backup success rate is characterized by comprising the following steps:
determining the number of theoretical backup points which are successfully backed up in a preset time period based on a preset backup strategy;
counting the number of actual backup points successfully backed up by the target backup source host in a preset time period based on the preset backup strategy;
determining the backup success rate of the target backup source host in a preset time period based on a preset backup strategy based on the actual backup point number and the theoretical backup point number;
the step of counting the number of actual backup points successfully backed up by the target backup source host in a preset time period based on the preset backup strategy specifically includes:
determining a time interval between actual backup points of the target backup source host in a preset time period based on the preset backup strategy;
comparing each time interval with a preset time interval value;
and counting the number of intervals of the time intervals equal to the preset time interval value, and taking the counted number of intervals as the number of actual backup points successfully backed up by the target backup source host in a preset time period based on the preset backup strategy.
2. The method for determining the backup success rate according to claim 1, wherein the step of determining the backup success rate of the target backup source host based on a preset backup strategy within a preset time period based on the actual number of backup points and the theoretical number of backup points specifically comprises:
calculating the ratio of the number of the actual backup points to the number of the theoretical backup points;
and taking the calculated ratio as the backup success rate of the target backup source host in a preset time period based on a preset backup strategy.
3. The method for determining backup success rate according to claim 1 or 2, wherein before the step of determining the number of theoretical backup points that are successfully backed up within a preset time period based on a preset backup policy, the method for determining backup success rate further comprises:
and when a user acquires an instruction based on the success rate triggered by the data backup interface, executing the step of determining the number of the theoretical backup points successfully backed up in a preset time period based on the preset backup strategy.
4. The method according to claim 1 or 2, wherein after the step of determining the backup success rate of the target backup source host based on the preset backup strategy within a preset time period based on the actual number of backup points and the theoretical number of backup points, the method further comprises:
determining the variation trend of the backup parameters in the preset time period;
and displaying the change trend of the backup parameters and the backup success rate.
5. The method for determining backup success rate according to claim 4, wherein the step of determining the variation trend of the backup parameter in the preset time period specifically includes:
obtaining backup parameters in a preset time period;
performing curve fitting according to the backup parameters to generate corresponding parameter curves;
and determining the change trend of the backup parameters in the preset time period based on the parameter curve.
6. The backup success rate determining method according to claim 4, wherein the backup parameters include: at least one of resource occupancy rate of the backup source host, data amount to be backed up, transmission network bandwidth occupancy rate, and resource occupancy rate of the backup host.
7. A backup success rate determining device, characterized by comprising: a memory, a processor and a backup success rate determination program stored on the memory and executable on the processor, the backup success rate determination program being configured to implement the steps of the backup success rate determination method according to any of claims 1 to 6.
8. A computer-readable storage medium, having stored thereon a backup success rate determination program which, when executed by a processor, implements the steps of the backup success rate determination method according to any one of claims 1 to 6.
9. A backup success rate determining apparatus, characterized in that the backup success rate determining apparatus comprises:
the theoretical determination module is used for determining the number of theoretical backup points successfully backed up in a preset time period based on a preset backup strategy;
the actual determination module is used for counting the number of actual backup points successfully backed up by the target backup source host in a preset time period based on the preset backup strategy;
the success rate determining module is used for determining the backup success rate of the target backup source host in a preset time period based on a preset backup strategy based on the actual backup point number and the theoretical backup point number;
the actual determination module is further configured to determine a time interval between actual backup points of the target backup source host in a preset time period based on the preset backup policy; comparing each time interval with a preset time interval value; and counting the number of intervals of the time intervals equal to the preset time interval value, and taking the counted number of intervals as the number of actual backup points successfully backed up by the target backup source host in a preset time period based on the preset backup strategy.
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