WO2016106756A1

WO2016106756A1 - Disaster recovery method, system and apparatus

Info

Publication number: WO2016106756A1
Application number: PCT/CN2014/096068
Authority: WO
Inventors: 邹锋哨
Original assignee: 华为技术有限公司
Priority date: 2014-12-31
Filing date: 2014-12-31
Publication date: 2016-07-07
Also published as: CN107111530B; CN107111530A

Abstract

Provided are a disaster recovery method, system and apparatus. The system comprises a production centre and a disaster recovery centre. The production centre comprises a disaster recovery management platform, a virtualization platform and a storage device. The storage device of the production centre comprises a master logic unit (LUN). The disaster recovery centre comprises a storage device. The storage device of the disaster recovery centre comprises a slave LUN. The disaster recovery management platform is used to send a request to perform silence processing on one or more virtual machines of the master LUN to the virtualization platform. The virtualization platform is used to perform silence processing on the one or more virtual machines according to the request for silence processing, and return a response of performing silence processing on the one or more virtual machines to the disaster recovery management platform. The disaster recovery management platform is used to receive the response of performing silence processing on the one or more virtual machines, and send a remote replication start request to the storage device of a production site.

Description

Disaster tolerance method, system and device

Technical field

The present invention relates to the field of information technology, and in particular, to a disaster tolerance method, system and device.

Background technique

In many production systems, data disaster tolerance is required for important business data. Data disaster tolerance, also known as remote data replication technology, refers to the establishment of an off-site data system, which is an available copy of local data. In the event of a disaster in local data and the entire application system, the system maintains at least one copy of the critical business data available in the field.

A typical data disaster recovery system includes a production center and a disaster recovery center. In the production center, hosts and storage devices are deployed for normal service operations. In the disaster recovery center, hosts and storage devices are deployed to take over the services after a disaster occurs in the production center. The storage devices of the production center or the disaster recovery center contain multiple logical unit numbers (LUNs).

In order to ensure that the data of the disaster recovery center can support the business takeover after the disaster occurs, the data copied to the disaster recovery center must ensure consistency. In the prior art, snapshot technology can be used to solve this problem. A snapshot is an image of data at a certain point in time (the point in time when the copy begins). The purpose of the snapshot is to create a state view for the LUN at a specific point in time. This view shows the data of the LUN at the time of creation. With this snapshot view, you can copy the data. In order to ensure the consistency of the data, the client agent software needs to be installed in the disaster-tolerant virtual machine. When the asynchronous remote replication is performed, the storage device of the production center sends a silent request to the client agent software of the virtual machine, and the client agent software Suspend the write IO received by the virtual machine and write the virtual machine to the cache (such as Cache) but no The data written to the disk is flushed to disk. After the cache refresh is completed, the client agent software returns a refresh completion message to the storage device of the production center. After receiving the refresh message returned by the client agent software, the storage device of the production center starts remote replication. First, take a snapshot of the logical unit number (LUN). After the snapshot is successful, synchronize the snapshot of the primary LUN to the snapshot. The slave LUN of the storage device in the disaster recovery center. .

Therefore, in order to implement disaster tolerance, the technology needs to install the client agent software in the disaster-tolerant virtual machine. However, in the virtualization scenario, the virtual machine usually requires no agent; and because the storage devices of different manufacturers may be different, the customer is caused. The end-agent software is diversified and cannot be unified.

Summary of the invention

The embodiment of the invention provides a disaster tolerance method, system and device.

In a first aspect, a disaster tolerance system is provided, where the system includes a production center and a disaster recovery center, and the production center includes a disaster recovery management platform, a virtualization platform, and a storage device, where the storage device of the production center includes a main logic. The LUN is a storage device, and the storage device of the disaster recovery center includes a slave LUN:

The disaster management platform is configured to send, to the virtualization platform, a request for silent processing of one or more virtual machines of the primary LUN;

The virtualization platform is configured to perform silent processing on the one or more virtual machines according to the request of the silent processing, and return to the disaster recovery management platform to perform silent processing on the one or more virtual machines. the response to;

The disaster management platform is configured to receive a response to silent processing of the one or more virtual machines, and send a startup remote replication request to a storage device of the production site;

a storage device of the production site, configured to perform snapshot processing on the primary LUN, and the primary device The LUN snapshot is copied to the slave LUN of the storage device at the disaster recovery site.

With reference to the first aspect, in a first possible implementation manner of the first aspect, when the request for the silent processing includes the identifier of the primary LUN, the virtualization platform is configured to use the one or more The virtual machine is configured to obtain an identifier of one or more virtual machines of the primary LUN according to the identifier of the primary LUN.

With reference to the first aspect, in a second possible implementation manner of the first aspect, when the request includes the identifier of the one or more virtual machines, the disaster management platform is used to perform the virtualization Before the platform sends a request for the silent processing of the one or more virtual machines of the primary LUN, the platform is further configured to send a query request to the virtualization platform, where the query request includes an identifier of the primary LUN;

The disaster recovery management platform is further configured to obtain a virtual machine list of the primary LUN obtained by the virtualization platform based on the identifier of the primary LUN, where the virtual machine list includes one or more of the primary LUNs The ID of the virtual machine.

With reference to the first aspect, the first possible implementation manner of the first aspect or the second possible implementation manner of the first aspect, in a third possible implementation manner of the first aspect, when the primary LUN is virtualized The response of the virtualization platform to the silent processing of the multiple virtual machines and the returning to the disaster recovery management platform for the silent processing of the multiple virtual machines includes:

The virtualization platform is configured to notify each of the plurality of virtual machines to perform a silent process, and receive a response of the silent process returned by each virtual machine;

When the virtualization platform determines that the response returned by each of the plurality of virtual machines is received, the virtualization platform is configured to return to the disaster recovery management platform to perform silent processing on the multiple virtual machines. the response to.

In combination with the first aspect, the first possible implementation of the first aspect to the third aspect of the first aspect A possible implementation manner, in a fourth possible implementation manner of the first aspect, the storage device of the production site is further configured to return a remote replication response to the disaster recovery management platform;

The disaster management platform is further configured to receive the initiated remote replication response, and send a request to the virtualization platform to cancel the silent processing on one or more virtual machines of the primary LUN;

The virtualization platform is further configured to perform the un-silent processing on the one or more virtual machines according to the request for canceling the silent processing, and return the one or more virtual machines to the disaster recovery management platform. Perform a response to cancel the silent process.

In a second aspect, the embodiment of the present invention provides another disaster tolerance system, where the system includes a production center and a disaster recovery center, and the production center includes a disaster recovery management platform, a virtualization platform, and a storage device, where the production center The storage device includes a primary logical unit number LUN; the disaster recovery center includes a storage device, and the storage device of the disaster recovery center includes a secondary LUN:

The disaster management platform is configured to obtain identifiers of multiple virtual machines of the primary LUN, and send a request for silent processing to each of the multiple virtual machines to the virtualization platform;

The virtualization platform is configured to perform silent processing on each virtual machine according to the request of the silent processing, and return a response to the disaster recovery management platform to perform silent processing on each virtual machine;

The disaster recovery management platform is configured to receive a response to the silent processing of each virtual machine, and send a startup remote replication request to a storage device of the production site;

The storage device of the production site is configured to perform snapshot processing on the primary LUN, and copy the primary LUN snapshot to the secondary LUN of the storage device at the disaster recovery site.

With reference to the second aspect, in a first possible implementation manner of the second aspect, the acquiring, by the disaster management platform, the identifiers of the multiple virtual machines of the primary LUN specifically includes:

The disaster management platform is configured to send a query request to the virtualization platform, where the query request is Including the identifier of the primary LUN;

The disaster management platform is further configured to obtain a virtual machine list of the primary LUN obtained by the virtualization platform based on the identifier of the primary LUN, where the virtual machine list includes multiple virtual machines of the primary LUN Logo.

With reference to the second aspect, or the first possible implementation manner of the second aspect, in a second possible implementation manner of the second aspect, the disaster management platform is configured to receive a silent manner for each virtual machine Processing the response and sending the initiate remote copy request to the storage device of the production site specifically includes:

The disaster management platform is configured to receive a response to the silent processing of each virtual machine, and determine, when the response returned by each virtual machine of the multiple virtual machines is received, to the storage device of the production site Send a remote copy request.

In a third aspect, the embodiment of the present invention provides a disaster tolerance method for a disaster tolerance system, where the system includes a production center and a disaster recovery center, and the production center includes a disaster recovery management platform, a virtualization platform, and a storage device. The storage device of the production center includes a primary logical unit number LUN; the disaster recovery center includes a storage device, and the storage device of the disaster recovery center includes a slave LUN:

The disaster management platform sends a request for silent processing to one or more virtual machines of the primary LUN to the virtualization platform;

Receiving, by the disaster management platform, a response of the virtualization platform to perform silent processing on the one or more virtual machines, and sending a startup remote replication request to a storage device of the production site to enable storage of the production site The device performs snapshot processing on the primary LUN, and copies the primary LUN snapshot to the secondary LUN of the storage device at the disaster recovery site.

With reference to the third aspect, in a first possible implementation manner of the third aspect, when the request includes the identifier of the one or more virtual machines, the disaster management platform sends the virtualization management platform to the virtualization platform. Before the request for the silent processing of the one or more virtual machines of the primary LUN, the query request is sent to the virtualization platform, where the query request includes the identifier of the primary LUN;

The disaster management platform acquires a virtual machine list of the primary LUN obtained by the virtualization platform based on the identifier of the primary LUN, where the virtual machine list includes identifiers of one or more virtual machines of the primary LUN. .

In conjunction with the third aspect or the first possible implementation manner of the third aspect, in a second possible implementation manner of the third aspect, the disaster management platform receives the startup sent by the storage device of the production site Remotely replicating a response, and sending, to the virtualization platform, a request to cancel a silent process on one or more virtual machines of the primary LUN;

The disaster management platform further receives a response returned by the virtual machine platform to cancel the silent processing of the one or more virtual machines.

A fourth aspect of the present invention provides a disaster tolerance method for a disaster tolerance system, where the system includes a production center and a disaster recovery center, and the production center includes a disaster recovery management platform, a virtualization platform, and a storage device. The storage device in the production center includes the main logical unit number LUN:

Receiving, by the virtualization platform, a request for silent processing of one or more virtual machines of the primary LUN from the disaster recovery management platform;

The virtualization platform performs silent processing on the one or more virtual machines according to the request of the silent processing, and returns a response to the disaster recovery management platform to perform silent processing on the one or more virtual machines. The disaster recovery management platform is configured to send a remote replication request to a storage device of the production site.

With reference to the fourth aspect, in a first possible implementation manner of the fourth aspect, when the request for the silent LUN includes the identifier of the primary LUN, the virtualization platform is configured to the one or more virtual machines The identifier of one or more virtual machines of the primary LUN is obtained according to the identifier of the primary LUN.

With reference to the fourth aspect, in a second possible implementation manner of the fourth aspect, the virtualization platform further receives a query request sent by the disaster recovery management platform, where the query request includes an identifier of the primary LUN;

The virtualization platform obtains a virtual machine list of the primary LUN based on the identifier of the primary LUN, and returns a virtual machine list of the primary LUN to the disaster recovery management platform, where the virtual machine list includes the primary LUN The identity of one or more virtual machines.

With reference to the fourth aspect, the first possible implementation manner of the fourth aspect, or the second possible implementation manner of the fourth aspect, in a third possible implementation manner of the fourth aspect, when the primary LUN is virtualized The response of the virtualization platform to the silent processing of the plurality of virtual machines and the returning to the disaster recovery management platform for the silent processing of the multiple virtual machines includes:

The virtualization platform notifies each of the plurality of virtual machines to perform a silent process, and receives a response of the silent process returned by each of the virtual machines;

When the virtualization platform determines that the response returned by each of the plurality of virtual machines is received, the virtualization platform returns a response to the disaster recovery management platform to perform silent processing on the multiple virtual machines. .

A fifth aspect of the present invention provides a disaster tolerance method for a disaster tolerance system, where the system includes a production center and a disaster recovery center, and the production center includes a disaster recovery management platform, a virtualization platform, and a storage device. The storage device of the production center includes a primary logical unit number LUN; the disaster recovery center includes a storage device, and the storage device of the disaster recovery center includes a slave LUN:

The disaster recovery management platform acquires identifiers of multiple virtual machines of the primary LUN, and the virtualization is Sending a request for silent processing of each of the plurality of virtual machines;

The disaster management platform receives a response of the virtualization platform to perform silent processing on each virtual machine, and sends a startup remote replication request to the storage device of the production site to enable the storage device of the production site Snapshot processing is performed on the primary LUN, and the primary LUN snapshot is copied to the secondary LUN of the storage device at the disaster recovery site.

With reference to the fifth aspect, in a first possible implementation manner of the fifth aspect, the acquiring, by the disaster management platform, the identifiers of the multiple virtual machines of the primary LUN specifically includes:

The disaster management platform sends a query request to the virtualization platform, where the query request includes an identifier of the primary LUN;

The disaster recovery management platform acquires a virtual machine list of the primary LUN obtained by the virtualization platform based on the identifier of the primary LUN, where the virtual machine list includes identifiers of multiple virtual machines of the primary LUN.

One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages: by adding a silent interface, the disaster recovery management platform may send one or more of the primary LUNs to the virtualization platform through the silent interface. The virtual machine performs a silent processing request, and the virtualization platform performs a silent process on the one or more virtual machines based on the silent processing request, and returns the one or more virtual machines to the disaster recovery management platform. Silently processing the response, so that the disaster recovery management platform can send a remote replication request to the storage device of the production site to perform disaster recovery of the primary LUN without installing the client agent software in the virtual machine, thereby implementing agentless disaster recovery. Increase the availability of disaster recovery solutions.

DRAWINGS

1 is a schematic structural diagram of a disaster tolerance system according to an embodiment of the present invention;

2A is a schematic flowchart of a silent request process according to an embodiment of the present invention;

2B is a schematic flowchart of canceling a silent request process according to an embodiment of the present invention;

3 is a schematic flowchart of a disaster tolerance method according to an embodiment of the present invention;

4 is a schematic flowchart of another disaster tolerance method according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a disaster recovery management apparatus according to an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a disaster tolerance device according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of another disaster recovery management apparatus according to an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a server in an embodiment of the present invention.

detailed description

The embodiment of the invention provides a disaster tolerance method, system and device, which are used to solve the problem that the client agent software must be installed in the virtual machine in the prior art to implement disaster tolerance.

The technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. It is a partial embodiment of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

System architecture of an embodiment of the present invention

Before introducing the technical solution of the embodiment of the present application, the disaster tolerance system is first introduced. The disaster recovery system includes a production center and a disaster tolerance center. Those skilled in the art should understand that in a specific implementation process, there may be multiple production centers or multiple disaster tolerance centers. Moreover, the production center in the embodiment of the present application can also serve as a disaster recovery center of other centers. The production center and the disaster recovery center can transmit data through IP (Internet Protocol) or FC (Fiber Chanel).

The basic structure of the production center and the disaster recovery center will be introduced below with reference to FIG.

The production center includes M storage devices for storing data in the production center. Where M is a positive integer, such as 3, 5, 8, 73, and the like. The production center can write data to M storage devices or read data from M storage devices. There are a plurality of servers in the production center. In a specific implementation process, the storage device may be a network attached storage (NAS) or a storage area network (SAN). The setting can be made according to actual needs, and the present application does not specifically limit it.

The disaster recovery management platform is used to provide the disaster recovery management function to the user based on the virtualization platform. Specifically, the disaster recovery software can be deployed on the disaster recovery management platform to configure the disaster recovery policy and replicate the disaster recovery strategy to the disaster recovery center. Receive disaster recovery strategies that are replicated from other centers that require disaster recovery capabilities at the production center. Provide a disaster recovery policy to the center in the disaster recovery process and restore the protected virtual machine according to the disaster recovery policy. The disaster management platform can run on a host, which can be any computing device known in the art, such as servers, desktop computers, and the like. Inside the host, a disaster recovery management platform and other applications are installed.

A virtualization platform that provides the ability to virtualize physical resources, specifically the ability to provide virtualized computing, networking, and storage resources. The virtualized platform is installed on the physical server. The virtualization platform can also be called a virtual machine monitor (VMM). Under the Xen system architecture, the VMM function is assumed by the hypervisor Hypervisor. Under other architectures, it can also be undertaken by vSphere or hyperv.

A storage device that provides storage resources of a virtual machine and can contain multiple logical unit numbers (LUNs).

Virtual Machine (VM), which is responsible for virtualizing multiple independents on a single hardware platform. The instruction set architect (or ISA) is the same virtual hardware system as the actual hardware, where each virtual hardware system can run a different operating system, namely the guest operating system (Guest OS). The user operating system will access the actual physical resources through the virtual machine monitor VMM.

Before executing the method in the embodiment of the present application, the administrator configures M storage devices in the production center. For the convenience of the introduction, the following describes how to configure the storage device as a SAN. There are multiple LUNs in the SAN. For example, the LUN11 and LUN12 in the SAN1 of the production center are divided into multiple consistency groups. Each consistency group includes at least one LUN. The consistency group in the embodiment is composed of one or more LUNs having the same storage replication information in the storage device, and the data of the consistency group is simultaneously copied and the copying action is stopped. The storage copy information indicates the direction in which each storage device copies data, and the time interval at which each storage device copies data. A LUN in a production center can be called a primary LUN. A LUN in a disaster recovery center can be called a secondary LUN.

Further, the administrator configures the replication direction of each consistency group. In this embodiment, the configuration of the replication direction refers to the configuration of the storage device on which the data on each LUN in the consistency group is copied. In addition, the administrator needs to configure the replication time of each consistency group. In this embodiment, the configuration replication time refers to the time interval between the time point of the current replication and the time point of the previous replication. After the configuration is complete, the data in the consistency group will automatically be copied automatically according to the copy direction and copy time.

After the configuration is complete, the storage device generates corresponding storage replication information, which can also be called configuration attributes.

For example, suppose the administrator divides LUN11 and LUN12 into consistency group 1, the production center is located in Shenzhen, and the replication direction of consistency group 1 is from the production center to a center in Xi'an, and the replication time is 5 minutes. In turn generate storage replication information, for example:

ReplicateGroup1: {lunId=11,12};

ReplicateGroup1.repliateDirection:{from(xi’an),to(shenzhen)};

ReplicateGroup1.replicateInterval: {5min};

......

Then, after the configuration is complete, LUN11 and LUN12 in consistency group 1 will replicate data to the two LUNs in another center in Xi'an every 5 minutes. For example, the two LUNs in the center of Xi'an are LUN21. , and LUN22.

In the specific replication process, the data of the production center can be copied in full to the storage device of another center. Of course, in order to reduce the load of data processing, the preferred method is to copy to full copy for the first time, and from the second time, only the incremental data is copied to the storage device of another center. However, the person skilled in the art can make settings according to actual needs, and the present application does not specifically limit the present application.

Method flow of embodiment of the present invention

In order to implement the solution of the embodiment of the present invention, the virtualization platform provides a silent and un-silent interface for the virtual machine, wherein:

A silent interface that suspends virtual machine write IO operations, application consistency guarantees, write caches (such as Cache), but does not write data to disk to disk operations;

Cancel the silent interface and restore the virtual machine write IO operation.

In the prior art, the virtualization platform does not provide a separate silent and un-silent interface, and only one snapshot interface. The processing after adding silence and canceling the silent interface is as shown in FIGS. 2A and 2B.

In FIG. 2A, the disaster recovery management platform (specifically, the disaster recovery software in the disaster recovery management platform) sends a request for silent processing of the virtual machine to the virtualization platform. The virtualization platform receives the request for silent processing of the virtual machine, and performs silent processing on the virtual machine, such as suspending the write IO of the system where the virtual machine is located, and flushing the data written in the cache but not written to the disk to the disk. . Then, the disaster recovery management platform returns a response to the silent processing of the virtual machine.

In FIG. 2B, the disaster recovery management platform (specifically, the disaster recovery software in the disaster recovery management platform) sends a request for canceling the silent processing of the virtual machine to the virtualization platform. The virtualization platform receives the request to cancel the silent processing of the virtual machine, and cancels the silent processing of the virtual machine, for example, cancels the write IO hang of the system where the virtual machine is located, and the virtual machine can perform normal read and write disk operations, thereby continuing normal operation. business. Then, the disaster recovery management platform returns a response to cancel the silent processing of the virtual machine.

The following figure, in conjunction with FIG. 3, further introduces another disaster tolerance method provided by the embodiment of the present invention. The method provided by the embodiment of the present invention can be applied to the system architecture shown in FIG. 1 , and an example of a primary LUN in the storage device of the production center is taken as an example:

When the disaster recovery management platform finds that remote replication is required according to the disaster recovery policy, the disaster recovery management platform sends a request for silent processing to one or more virtual machines of the primary LUN to the virtualization platform.

It should be noted that the virtual machine of the primary LUN refers to a virtual machine located on the primary LUN, and may be a virtual machine or multiple virtual machines.

An optional solution, the disaster recovery management platform sends a request for silent processing to all virtual machines of the primary LUN to the virtualization platform. In this embodiment of the present invention, all the virtual machines of the primary LUN may be silently processed, and some virtual machines of the primary LUN may be silently processed, which is not limited.

The request for the silent processing may include the identifier of the primary LUN, or may also include the identifier of one or more virtual machines of the primary LUN.

When the request includes the identifier of the one or more virtual machines, the disaster management platform sends a request to the virtualization platform to perform silent processing on one or more virtual machines of the primary LUN. And sending, by the virtualization platform, a query request, where the query request includes an identifier of the primary LUN, and the virtualization platform obtains a virtual machine list of the primary LUN obtained by using the identifier of the primary LUN, The virtual machine list includes the identifiers of one or more virtual machines of the primary LUN, and then The disaster recovery management platform returns a list of virtual machines of the primary LUN.

102. The virtualization platform performs silent processing on the one or more virtual machines according to the request of the silent processing.

And obtaining, by the virtualization platform, the primary LUN according to the identifier of the primary LUN, before the virtualized platform performs the silent processing on the one or more virtual machines. The identity of one or more virtual machines.

The virtualization platform notifies the one or more virtual machines to perform silent processing, specifically, may notify a virtualized driver (such as VM TOOLS) in the virtual machine, and the virtualized driver invokes a guest operating system (GUEST OS) for IO quiescing. deal with. Silent processing is to hang the IO and flush the data written to the Cache cache but not written to disk to the disk. After processing, the one or more virtual machine virtual machines return a silent response to the virtualization platform.

103. When there are multiple virtual machines of the primary LUN, the virtualization platform determines, when receiving the response returned by each of the multiple virtual machines, returning to the disaster recovery management platform. The response of multiple virtual machines for silent processing.

That is, after the virtualization platform determines that the virtual processing of each of the plurality of virtual machines is completed, the disaster recovery management platform returns a response to silent processing of the plurality of virtual machines of the primary LUN.

When the virtual machine of the primary LUN receives only the response returned by the virtual machine, the virtualized platform may return a response to the virtual machine to perform silent processing on the virtual machine.

104. The disaster recovery management platform receives a response to silent processing of the one or more virtual machines, and sends a startup remote replication request to a storage device of the production site.

105. The storage device at the production site starts remote replication, and the primary LUN is first snapshot processed. The snapshot of the primary LUN is performed. The IO cache of one or more virtual machines on the primary LUN is flushed to the primary LUN. This ensures that the disk data on the primary LUN is consistent.

106. After the storage device of the production site processes the snapshot of the primary LUN successfully, it returns a remote replication response to the disaster recovery management platform.

After receiving the remote replication response, the disaster recovery management platform sends a request to the virtualization platform to cancel the silent processing on one or more virtual machines of the primary LUN.

The request for canceling the silent process may include the identifier of the primary LUN, or may also include the identifier of one or more virtual machines of the primary LUN. See 101 for details.

111. The virtualization platform cancels the silent processing on the one or more virtual machines according to the request for canceling the silent processing, that is, the system where the one or more virtual machines are located cancels the write IO suspension, and continues the normal service. .

The cancellation of silent processing is the reverse process of silent processing, similar to the silent processing. See the process of 102 for details.

And when the virtualization platform determines that the response to cancel the silence returned by the one or more virtual machines is received, returning, to the disaster recovery management platform, a response to canceling the silent processing of the one or more virtual machines. .

The storage device at the production site copies the snapshot of the primary LUN to the secondary LUN of the storage device at the disaster recovery site. After the synchronization data is complete, the snapshot of the primary LUN is deleted.

According to the method provided by the embodiment of the present invention, the disaster recovery management platform may send a request for silent processing of one or more virtual machines of the primary LUN to the virtualization platform by using a silent interface, where the virtualization platform is based on the silence. Processing the request, performing silent processing on the one or more virtual machines, and returning a response to the one or more virtual machines to the disaster recovery management platform, so that the disaster management platform can The storage device at the production site sends a start remote copy request, The disaster recovery of the primary LUN does not require the installation of the client agent software in the virtual machine, which enables agentless disaster recovery and improves the availability of the disaster recovery solution.

Moreover, the prior art implements a disaster recovery solution by using the client agent software, and the storage device sends a silent request to the client agent software of the virtual machine, and after the cache refresh is completed, the client agent software returns a refresh completion message to the storage device, which needs to be virtualized. The device communicates directly with the storage device, which poses a security risk. In the method provided by the embodiment of the present invention, the virtual machine does not directly interact with the storage device, but the relatively secure disaster recovery management platform communicates with the storage device, so that the security of the storage device data can be improved.

The following is a detailed description of the disaster tolerance method provided by the embodiment of the present invention with reference to FIG. The method provided by the embodiment of the present invention can be applied to the system architecture shown in FIG. 1 , and an example of a primary LUN in the storage device of the production center is taken as an example:

201. When the disaster recovery management platform finds that the remote replication is required according to the disaster recovery policy, the query request is sent to the virtualization platform, where the query request includes the identifier of the primary LUN.

202. The virtualization platform obtains a virtual machine list of the primary LUN according to the identifier of the primary LUN, where the virtual machine list includes identifiers of multiple virtual machines of the primary LUN.

203. The virtualization platform returns a virtual machine list of the primary LUN to the disaster recovery management platform.

The disaster management platform acquires identifiers of the plurality of virtual machines of the primary LUN from the virtual machine list of the primary LUN, and sends each virtual virtual machine to the virtualized platform. The machine performs a silent processing request, and each silently processed request contains an identifier of a virtual machine.

205. The virtualization platform performs a silent manner on each virtual machine according to the request of the silent processing. Reason.

The virtualization platform notifies the virtual machine to perform silent processing, specifically, the virtualization driver (such as VM TOOLS) in the virtual machine is notified, and the virtual operating driver invokes the guest operating system (GUEST OS) to perform IO silent processing. Silent processing is to hang the IO and flush the data written to the Cache cache but not written to disk to the disk. After processing, each virtual machine returns a silent response to the virtualization platform.

206. The virtualization platform returns a response to the virtual disaster management platform to perform silent processing on each virtual machine.

After the virtualized platform completes the silent processing of the virtual machine, the virtualized platform returns a response to the silent processing of the virtual machine. Similarly, as shown in FIG. 3, when the virtualization platform determines that the virtualized platform has received the And returning a response to performing silent processing on the plurality of virtual machines to the disaster recovery management platform when the response returned by each of the plurality of virtual machines is returned.

207. The disaster recovery management platform receives a response to the silent processing of each virtual machine, and sends a startup remote replication request to a storage device of the production site.

After the disaster recovery management platform receives the response to the silent processing of each virtual machine, the storage to the production site is determined when it is determined that the response returned by each of the plurality of virtual machines is received. The device sends a start remote copy request.

208. The storage device at the production site starts remote replication, and the primary LUN is snapshotd first, that is, the primary LUN is snapshotd. The IO cache of multiple virtual machines on the primary LUN is already flushed to the primary LUN. The disk data in these virtual machines on the primary LUN is consistent.

209. After the storage device of the production site processes the snapshot of the primary LUN successfully, the storage device returns a remote replication response to the disaster recovery management platform.

210. After receiving the remote replication response, the disaster recovery management platform sends a request for canceling the silent processing on each of the plurality of virtual machines to the virtualization platform.

For example, in 204, each request for canceling the silent processing includes the identifier of a virtual machine. For details, see 204.

211. The virtualization platform cancels the silent process for each virtual machine according to the request for canceling the silent process, that is, the system where each virtual machine is located performs cancel write IO suspension, and continues normal service.

The cancellation of silent processing is the reverse process of silent processing, similar to the silent processing. See the flow of 205 for details.

212. The virtualization platform returns a response to canceling the silent processing of each virtual machine to the disaster recovery management platform.

215. The storage device at the production site synchronizes the snapshot of the primary LUN to the secondary LUN of the storage device at the disaster recovery site, and cancels the snapshot of the primary LUN after the synchronization data is completed.

The method provided by the embodiment of the present invention, by adding a silent interface, the disaster recovery management platform may send a request for silent processing to each of the plurality of virtual machines to the virtualization platform through a silent interface, where the virtualization platform is based Silently processing the request, performing silent processing on each of the virtual machines, and returning a response to the virtual disaster management platform to silently process each virtual machine, so that the disaster recovery management platform can be to the production site The storage device sends a remote replication request to perform the disaster recovery of the primary LUN. The client agent software is installed in the virtual machine to implement agentless disaster recovery and improve the availability of the disaster recovery solution.

Device of embodiment of the invention

The embodiment of the present invention further provides a disaster recovery management device. Referring to FIG. 5, the disaster recovery management device can implement the function of the disaster recovery management platform in the foregoing embodiment, and the disaster recovery management device application is similar to the capacity of FIG. The disaster recovery system, the system includes a production center and a disaster recovery center, the production center includes a disaster recovery management device 50, a virtualization platform, and a storage device, where the storage device of the production center includes a primary logical unit number LUN; The center includes a storage device, and the storage device of the disaster recovery center includes a slave LUN. The disaster management device includes an input unit 501 and an output unit 502:

The output unit 502 is configured to send, to the virtualization platform, a request for performing silent processing on one or more virtual machines of the primary LUN;

The input unit 501 is configured to receive a response of the virtualization platform to perform silent processing on the one or more virtual machines.

The output unit 502 is further configured to send a startup remote replication request to the storage device of the production site, so that the storage device of the production site performs snapshot processing on the primary LUN, and copies the primary LUN snapshot to The slave LUN of the storage device at the disaster recovery site.

When the request includes the identifier of the one or more virtual machines, the output unit 502 is configured to send, to the virtualization platform, a request to perform silent processing on one or more virtual machines of the primary LUN. And the querying request is sent by the virtualization platform, where the query request includes the identifier of the primary LUN, and the input unit 501 is further configured to acquire the obtained by the virtualization platform based on the identifier of the primary LUN. A list of virtual machines of the primary LUN, where the virtual machine list includes identifiers of one or more virtual machines of the primary LUN.

The input unit 501 is further configured to receive a startup remote complex sent by the storage device of the production site. The output unit 502 is further configured to send a request for canceling the silent process to the one or more virtual machines of the primary LUN to the virtualization platform, and then the input unit 501 is further configured to receive the virtual machine platform. The returned response to cancel the silent processing of the one or more virtual machines.

The embodiment of the present invention further provides a disaster tolerance device. Referring to FIG. 6, the disaster recovery device can implement the function of the virtualization platform in the foregoing embodiment, and the disaster recovery device is similar to the disaster tolerance system shown in FIG. The system includes a production center and a disaster recovery center, and the production center includes a disaster recovery management platform, a disaster recovery device 60, and a storage device, and the storage device of the production center includes a primary logical unit number LUN. The disaster recovery device 60 includes an input unit 601, an output unit 602, and a processing unit 603:

The input unit 601 is configured to receive, from the disaster recovery management platform, a request for performing silent processing on one or more virtual machines of the primary LUN, where

The processing unit 603 is configured to perform silent processing on the one or more virtual machines according to the request of the silent processing;

The output unit 602 is configured to return a response to the disaster recovery management platform to perform silent processing on the one or more virtual machines, so that the disaster recovery management platform sends a startup remote to the storage device of the production site. Copy the request.

The processing unit 603 is configured to acquire, according to the identifier of the primary LUN, the identifier of the primary LUN, before the one or more virtual machines perform the silent processing, when the request for the silent processing includes the identifier of the primary LUN. The identifier of one or more virtual machines of the primary LUN.

The input unit 601 is further configured to receive the query request sent by the disaster recovery management platform, where the query request includes an identifier of the primary LUN, and the processing unit 603 is further configured to obtain the primary based on the identifier of the primary LUN. a virtual machine list of the LUN; the output unit 602 is further configured to return a virtual machine list of the primary LUN to the disaster recovery management platform, where the virtual machine list includes one or more of the primary LUNs The identifier of the virtual machine.

The processing unit 603 is configured to perform a silent process on the one or more virtual machines, and the outputting, by the output unit 602, the response to the disaster recovery management platform to perform the silent processing on the one or more virtual machines includes:

The processing unit 603 is configured to notify the one or more virtual machines to perform a silent process, and receive a response of the silent process returned by the one or more virtual machines, where the output unit 602 is configured to send to the disaster recovery management platform. Returns a response to silent processing of the one or more virtual machines. If there is a slave virtual machine, when the processing unit 603 determines that the response returned by each of the plurality of virtual machines is received, the output unit 602 is configured to return to the disaster recovery management platform The response of multiple virtual machines for silent processing.

The input unit 601 is further configured to receive a request for canceling the silent process of one or more virtual machines of the primary LUN that is sent by the disaster recovery management platform, where the processing unit 603 is further configured to perform the silent process according to the cancellation. The request is performed to cancel the silent processing on the one or more virtual machines, and the output unit 602 is further configured to return a response to the disaster recovery management platform to cancel the silent processing of the one or more virtual machines.

In the device provided by the embodiment of the present invention, the output unit 502 of the disaster recovery management device 50 can send a silent interface to the input unit 601 of the disaster recovery device 60 to silence one or more virtual machines of the primary LUN. The processing unit 603 of the disaster tolerance device 60 performs a silent process on the one or more virtual machines based on the request of the silent process, and the output unit 602 of the disaster tolerance device 60 sends the input unit 501 to the disaster tolerance management device 50. Returning a response to the silent processing of the one or more virtual machines, so that the output unit 502 of the disaster recovery management device 50 can send a remote replication request to the storage device of the production site to perform disaster recovery of the primary LUN without using Install guest in the virtual machine The client agent software implements agentless disaster recovery and improves the availability of the disaster recovery solution.

The embodiment of the present invention further provides a disaster recovery management device. Referring to FIG. 7, the disaster recovery management device can implement the function of the disaster recovery management platform in the foregoing embodiment, and the disaster recovery management device is similar to the capacity of FIG. The disaster recovery system, the system includes a production center and a disaster recovery center, the production center includes a disaster recovery management device 70, a virtualization platform, and a storage device, where the storage device of the production center includes a primary logical unit number LUN; The center includes a storage device, and the storage device of the disaster recovery center includes a slave LUN. The disaster management device includes an input unit 701, an output unit 702, and a processing unit 703:

The processing unit 703 is configured to acquire identifiers of multiple virtual machines of the primary LUN, and the output unit 702 is configured to send, to the virtualization platform, perform silent processing on each of the multiple virtual machines. Request

The input unit 703 is configured to receive a response of the virtualization platform to the silent processing of each virtual machine, where the output unit 702 is further configured to send, by the storage device of the production site, a remote replication request to enable The storage device of the production site performs snapshot processing on the primary LUN, and copies the primary LUN snapshot to the secondary LUN of the storage device at the disaster recovery site.

The processing unit 703 is configured to obtain the identifiers of the plurality of virtual machines of the primary LUN, and the processing unit 703 is configured to send a query request to the virtualization platform, where the query request includes an identifier of the primary LUN. And obtaining, by the virtualization platform, a virtual machine list of the primary LUN obtained by using the identifier of the primary LUN, where the virtual machine list includes identifiers of multiple virtual machines of the primary LUN.

The input unit 701 is configured to receive a response to the silent processing of each of the virtual machines, where the outputting, by the outputting unit 702, the sending the remote copy request to the storage device of the production site, specifically includes:

The input unit 701 is configured to receive a response to performing silent processing on each of the virtual machines, where the processing unit 703 determines that a response returned by each of the plurality of virtual machines is received, The output unit 703 is configured to send a startup remote copy request to a storage device of the production site.

The input unit 701 is further configured to receive a startup remote replication response returned by the storage device of the production site, where the output unit 702 is further configured to send, to the virtualization platform, each virtual of the multiple virtual machines The device performs a request to cancel the silent process, and the input unit 701 is further configured to receive a response returned by the virtualization platform to cancel the silent process for each virtual machine.

The device provided by the embodiment of the present invention, by adding a silent interface, the output unit 702 of the disaster recovery management device 70 can send a request for silent processing to each of the plurality of virtual machines to the virtualization platform through the silent interface. The virtualization platform performs a silent process on the virtual machine according to the request of the silent process, and returns a response to the silent process of each virtual machine to the input unit 701 of the disaster recovery management device 70, thereby implementing disaster recovery management. The output unit 702 of the device 70 can send a remote replication request to the storage device of the production site to perform disaster recovery of the primary LUN without installing the client agent software in the virtual machine, thereby implementing agentless disaster recovery and improving the capacity. Availability of the disaster plan.

The embodiment of the present invention further provides a server. Referring to FIG. 8 , the server 80 includes a processor 801 , a memory 802 , and a communication port 803 .

The processor 801 is for executing a program. The program in this embodiment may include program code, and the program code includes computer operation instructions. The processor may be a central processing unit CPU or one or more integrated circuits configured to implement embodiments of the present invention. The program executed by the processor is a program corresponding to each step of the disaster recovery management platform or the virtualization platform in the foregoing embodiment;

a memory 602, configured to store a program executed by the processor;

The communication port 603 is configured to communicate with an external device.

For specific functions, refer to the description of the disaster recovery management platform or the virtualization platform in the previous embodiment.

Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, system, or meter. Computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) including computer usable program code.

The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

It is apparent that those skilled in the art can make various modifications and variations to the invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and modifications of the invention

Claims

A disaster recovery system, the system includes a production center and a disaster recovery center, wherein the production center includes a disaster recovery management platform, a virtualization platform, and a storage device, and the storage device of the production center includes a main logical unit number. The LUN includes the storage device, and the storage device of the disaster recovery center includes the slave LUN:

The disaster management platform is configured to send, to the virtualization platform, a request for silent processing of one or more virtual machines of the primary LUN;

The virtualization platform is configured to perform silent processing on the one or more virtual machines according to the request of the silent processing, and return to the disaster recovery management platform to perform silent processing on the one or more virtual machines. the response to;

The disaster management platform is configured to receive a response to silent processing of the one or more virtual machines, and send a startup remote replication request to a storage device of the production site;

The storage device of the production site is configured to perform snapshot processing on the primary LUN, and copy the primary LUN snapshot to the secondary LUN of the storage device at the disaster recovery site.
The system of claim 1 wherein:

And the virtualized platform is configured to acquire the identifier according to the identifier of the primary LUN before performing the silent processing on the one or more virtual machines. The identifier of one or more virtual machines of the primary LUN.
The system of claim 1 wherein:

When the request includes the identifier of the one or more virtual machines, the disaster recovery management platform is configured to send, to the virtualization platform, a request for silent processing of one or more virtual machines of the primary LUN. Previously, the method further includes sending a query request to the virtualization platform, where the query request includes the primary LUN Identification

The disaster recovery management platform is further configured to obtain a virtual machine list of the primary LUN obtained by the virtualization platform based on the identifier of the primary LUN, where the virtual machine list includes one or more of the primary LUNs The ID of the virtual machine.
The system according to any one of claims 1 to 3, wherein when there are multiple virtual machines of the primary LUN, the virtualization platform is configured to perform silent processing on the multiple virtual machines, and The response of the disaster recovery management platform to the silent processing of the multiple virtual machines specifically includes:

The virtualization platform is configured to notify each of the plurality of virtual machines to perform a silent process, and receive a response of the silent process returned by each virtual machine;

When the virtualization platform determines that the response returned by each of the plurality of virtual machines is received, the virtualization platform is configured to return to the disaster recovery management platform to perform silent processing on the multiple virtual machines. the response to.
A system according to any one of claims 1 to 4, characterized in that:

The storage device of the production site is further configured to return a remote replication response to the disaster recovery management platform;

The disaster management platform is further configured to receive the initiated remote replication response, and send a request to the virtualization platform to cancel the silent processing on one or more virtual machines of the primary LUN;

The virtualization platform is further configured to perform the un-silent processing on the one or more virtual machines according to the request for canceling the silent processing, and return the one or more virtual machines to the disaster recovery management platform. Perform a response to cancel the silent process.
A disaster tolerance system, the system includes a production center and a disaster recovery center, wherein the production center includes a disaster recovery management platform, a virtualization platform, and a storage device, and the storage center of the production center The storage unit includes a storage device, and the storage device of the disaster recovery center includes a slave LUN:

The disaster management platform is configured to obtain identifiers of multiple virtual machines of the primary LUN, and send a request for silent processing to each of the multiple virtual machines to the virtualization platform;

The virtualization platform is configured to perform silent processing on each virtual machine according to the request of the silent processing, and return a response to the disaster recovery management platform to perform silent processing on each virtual machine;

The disaster recovery management platform is configured to receive a response to the silent processing of each virtual machine, and send a startup remote replication request to a storage device of the production site;

The storage device of the production site is configured to perform snapshot processing on the primary LUN, and copy the primary LUN snapshot to the secondary LUN of the storage device at the disaster recovery site.
The system of claim 6, wherein the obtaining, by the disaster management platform, the identifiers of the plurality of virtual machines of the primary LUN specifically includes:

The disaster management platform is configured to send a query request to the virtualization platform, where the query request includes an identifier of the primary LUN;

The disaster management platform is further configured to obtain a virtual machine list of the primary LUN obtained by the virtualization platform based on the identifier of the primary LUN, where the virtual machine list includes multiple virtual machines of the primary LUN Logo.
The system according to claim 6 or 7, wherein the disaster management platform is configured to receive a response to the silent processing of each virtual machine, and send a startup remote to the storage device of the production site. The copy request specifically includes:

The disaster management platform is configured to receive a response to the silent processing of each virtual machine, and determine to store the response returned by each virtual machine in the plurality of virtual machines to the production site. The device sends a start remote copy request.
A system according to any one of claims 6 to 8 wherein:

The storage device of the production site is further configured to return a remote replication response to the disaster recovery management platform;

The disaster management platform is further configured to receive the initiated remote replication response, and send a request to the virtualization platform to cancel the silent processing of each of the multiple virtual machines.

The virtualization platform is further configured to cancel the silent processing on the virtual machine according to the request for canceling the silent processing, and return to the disaster recovery management platform to cancel the silent processing on each virtual machine. the response to.
A disaster tolerance method for a disaster recovery system, the system includes a production center and a disaster recovery center, wherein the production center includes a disaster recovery management platform, a virtualization platform, and a storage device, and the storage of the production center The device includes a primary logical unit number LUN; the disaster recovery center includes a storage device, and the storage device of the disaster recovery center includes a secondary LUN:

The disaster management platform sends a request for silent processing to one or more virtual machines of the primary LUN to the virtualization platform;

Receiving, by the disaster management platform, a response of the virtualization platform to perform silent processing on the one or more virtual machines, and sending a startup remote replication request to a storage device of the production site to enable storage of the production site The device performs snapshot processing on the primary LUN, and copies the primary LUN snapshot to the secondary LUN of the storage device at the disaster recovery site.
The method of claim 10 wherein:

When the request includes the identifier of the one or more virtual machines, the disaster management platform sends a request for silent processing of one or more virtual machines of the primary LUN to the virtualization platform. And sending a query request to the virtualization platform, where the query request includes an identifier of the primary LUN;

The disaster management platform acquires a virtual machine list of the primary LUN obtained by the virtualization platform based on the identifier of the primary LUN, where the virtual machine list includes identifiers of one or more virtual machines of the primary LUN. .
The method of claim 10 or 11, wherein the method further comprises:

The disaster recovery management platform receives a startup remote replication response sent by the storage device of the production site, and sends a request for canceling the silent processing to one or more virtual machines of the primary LUN to the virtualization platform;

The disaster management platform further receives a response returned by the virtual machine platform to cancel the silent processing of the one or more virtual machines.
A disaster tolerance method for a disaster recovery system, the system includes a production center and a disaster recovery center, wherein the production center includes a disaster recovery management platform, a virtualization platform, and a storage device, and the storage of the production center The device includes the primary logical unit number LUN:

The virtualization platform receives a request for silent processing of one or more virtual machines of the primary LUN from the disaster recovery management platform,

The virtualization platform performs silent processing on the one or more virtual machines according to the request of the silent processing, and returns a response to the disaster recovery management platform to perform silent processing on the one or more virtual machines. The disaster recovery management platform is configured to send a remote replication request to a storage device of the production site.
The method of claim 13 wherein:

The virtualization platform acquires the primary LUN according to the identifier of the primary LUN before performing the silent processing on the one or more virtual machines. ID of one or more virtual machines of the LUN.
The method of claim 13 wherein:

The virtualization platform further receives a query request sent by the disaster recovery management platform, where the query request includes an identifier of the primary LUN;

The virtualization platform obtains a virtual machine list of the primary LUN based on the identifier of the primary LUN, and returns a virtual machine list of the primary LUN to the disaster recovery management platform, where the virtual machine list includes the primary LUN The identity of one or more virtual machines.
The method according to any one of claims 13 to 15, wherein when there are multiple virtual machines of the primary LUN, the virtualization platform performs silent processing on the plurality of virtual machines, and The response of the disaster recovery management platform to the silent processing of the multiple virtual machines includes:

The virtualization platform notifies each of the plurality of virtual machines to perform a silent process, and receives a response of the silent process returned by each of the virtual machines;

When the virtualization platform determines that the response returned by each of the plurality of virtual machines is received, the virtualization platform returns a response to the disaster recovery management platform to perform silent processing on the multiple virtual machines. .
The method of any of claims 13 to 16, wherein the method comprises:

The virtualization platform receives a request for canceling the silent processing of one or more virtual machines of the primary LUN sent by the disaster recovery management platform, and according to the request for canceling the silent processing, the one or more virtual The machine cancels the silent process, and returns a response to the disaster recovery management platform to cancel the silent process of the one or more virtual machines.
A disaster recovery method for a disaster tolerance system, the system includes a production center and a disaster recovery center, wherein the production center includes a disaster recovery management platform, a virtualization platform, and a storage device, The storage device of the production center includes a primary logical unit number LUN; the disaster recovery center includes a storage device, and the storage device of the disaster recovery center includes a secondary LUN:

The disaster management platform acquires identifiers of the plurality of virtual machines of the primary LUN, and sends a request for silent processing to each of the plurality of virtual machines to the virtualization platform;

The disaster management platform receives a response of the virtualization platform to perform silent processing on each virtual machine, and sends a startup remote replication request to the storage device of the production site to enable the storage device of the production site Snapshot processing is performed on the primary LUN, and the primary LUN snapshot is copied to the secondary LUN of the storage device at the disaster recovery site.
The method of claim 18, wherein the obtaining, by the disaster management platform, the identifiers of the plurality of virtual machines of the primary LUN specifically includes:

The disaster management platform sends a query request to the virtualization platform, where the query request includes an identifier of the primary LUN;

The disaster recovery management platform acquires a virtual machine list of the primary LUN obtained by the virtualization platform based on the identifier of the primary LUN, where the virtual machine list includes identifiers of multiple virtual machines of the primary LUN.
The method according to claim 18 or 19, wherein the disaster management platform receives a response to the silent processing of each virtual machine, and sends a start remote copy request to the storage device of the production site. include:

The disaster recovery management platform receives a response to the silent processing of each virtual machine, and determines to send a startup to the storage device of the production site when receiving a response returned by each of the plurality of virtual machines Remote copy request.
The method of any one of claims 18 to 20, wherein the method further comprises:

The disaster management platform receives a startup remote replication response returned by the storage device of the production site, and sends a request for canceling the silent processing to each of the plurality of virtual machines to the virtualization platform;

The disaster recovery management platform further receives a response returned by the virtualization platform to cancel the silent processing of each virtual machine.
A server applied to a disaster recovery system, wherein the server runs a disaster recovery management platform, and the server includes a processor, a memory, and a communication port;

The communication port is configured to communicate with a virtualization platform in the disaster tolerance system;

The memory is used to store a program;

The processor is operative to execute the program to implement the method of any of claims 10-12.
A server applied to a disaster tolerant system, wherein the server runs a virtualization platform, and the server includes a processor, a memory, and a communication port;

The communication port is configured to communicate with a disaster recovery management platform in the disaster tolerance system;

The memory is used to store a program;

The processor is operative to execute the program to implement the method of any of claims 13-17.
A server applied to a disaster recovery system, wherein the server runs a disaster recovery management platform, and the server includes a processor, a memory, and a communication port;

The communication port is configured to communicate with a virtualization platform in the disaster tolerance system;

The memory is used to store a program;

The processor is operative to execute the program to implement the method of any of claims 18-21.