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Data transmitting method and system and virtual storage gateways

A data transmission method and virtual storage technology, applied in the fields of systems, virtual storage gateways, and data transmission methods, can solve problems such as data inability to communicate, and achieve the effect of ensuring normal operation.

Active Publication Date: 2014-12-24
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem in the prior art that when the service data link between two data centers fails, the data between the two data centers cannot communicate with each other, the embodiment of the present invention provides a data transmission method, system and virtual storage gateway

Method used

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  • Data transmitting method and system and virtual storage gateways
  • Data transmitting method and system and virtual storage gateways
  • Data transmitting method and system and virtual storage gateways

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0050] An embodiment of the present invention provides a data transmission method, which is suitable for data transmission between a first data center and a second data center. The first data center includes: a first storage device, a first host, and a first virtual storage gateway. The second data center includes: a second storage device, a second host, and a second virtual storage gateway, see figure 1 , the method includes:

[0051] Step 101: The first virtual storage gateway receives a first data read / write request sent by a first host, and the first data read / write request includes a first LBA (Logical Block Addressing, Logical Block Addressing) address.

[0052] Wherein, the first virtual storage gateway may be a virtual storage gateway cluster node of the first data center, and the second virtual storage gateway may be a virtual storage gateway cluster node of the second data center.

[0053] Step 102: According to the stored corresponding relationship between the firs...

Embodiment 2

[0057] Taking the dual data center composed of the first data center and the second data center as an example, the data transmission method provided by the embodiment of the present invention will be further described, see figure 2 , the following is a brief description of the architecture of the dual data centers:

[0058] In a dual data center scenario, the first data center 10 and the second data center 20 are connected through a service data link 30 . Wherein, the service data link 30 may use an optical fiber.

[0059] Specifically, the first data center 10 includes at least one first host 11, a first storage device 12, a first virtual storage gateway 13, and a first switch 14, and the first virtual storage gateway 13 communicates with all the first switches 14 A storage device 12 is connected, and the first virtual storage gateway 13 is connected to all the first hosts 11 through the first switch 14 . The first storage device 12 may be the same type of storage device, ...

Embodiment 3

[0104] A data transmission method provided by an embodiment of the present invention is further described below. The application scenario of this embodiment is that there is no service data link between the first data center and the second data center, and they are two independent data centers. However, due to business needs, it is necessary to quickly build the first data center and the second data center into dual data centers, and temporarily transfer data between the first data center and the second data center, see Figure 4 , the method includes:

[0105] Step 301: A heartbeat network is established between the first virtual storage gateway and the second virtual storage gateway.

[0106] Since the first data center and the second data center are two independent data centers, initially, there is no heartbeat network between the first virtual storage gateway and the second virtual storage gateway, and the first virtual storage gateway and the second virtual storage gatewa...

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Abstract

The invention discloses a data transmitting method and system and virtual storage gateways and belongs to the field of data transmission. The data transmitting method comprises the steps that the first virtual storage gateway receives first data reading and writing request sent by a first host, wherein the first data reading and writing request comprises a first logical block addressing address; according to the saved corresponding relation between the first logical block addressing address and a second logical block addressing address, the first data reading and writing request is changed into a second data reading and writing request, wherein the second data reading and writing request comprises a second logical block addressing address; through a heartbeat network between the first virtual storage gateway and the second virtual storage gateway, the second data reading and writing request is sent to the second virtual storage gateway, and the second virtual storage gateway is made to send the second data reading and writing request to the second storage device. According to the technical scheme, the situation that when a service data link between two data centers breaks down, transmission of reading and writing data cannot be conducted is avoided, and the normal operation of host services is guaranteed.

Description

technical field [0001] The invention relates to the field of data transmission, in particular to a data transmission method, system and virtual storage gateway. Background technique [0002] Storage virtualization refers to the unified management of multiple and / or multiple storage devices in a certain way to provide a storage system with large capacity and high data transmission performance. Currently, storage virtualization mainly includes the following three types: host-based virtualization, storage device-based virtualization, and storage network-based virtualization. Among them, the virtualization based on the storage network is realized by adding a large number of virtual storage gateways in the storage area network, and each virtual storage gateway is connected to the host computer and the storage device through a switch, and these virtual storage gateways form a virtual storage gateway cluster. Each host can access all storage devices through virtual storage gateway...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04L29/12H04L12/66
Inventor 张永才
Owner HUAWEI TECH CO LTD