A virtual machine disk backup method

Abstract

The present application discloses a disk backup method for a virtual machine, including: A. The backup server initiates backup of the virtual machine on the virtualization platform; B. The backup server communicates with the virtualization platform to notify the virtualization platform to execute Snapshot operation; C. After the virtualization platform executes the snapshot operation on the virtual machine, it analyzes the mother disk of the virtual machine to obtain the actual data sector distribution of the disk, and the virtualization platform returns the actual data sector distribution of the disk to the backup server; D. The backup server obtains the actual data sector distribution of each disk, and then backs up the corresponding sector data to the media server. The solution of the application can shorten the duration of the backup recovery window, reduce the resource occupation of the virtual platform, and save a lot of storage space for customers.

Description

technical field [0001] The present application relates to the technical field of computer data storage, in particular to a virtual machine disk backup method. Background technique [0002] Virtualization technology refers to the operation of computing elements on a virtual basis rather than a real basis. Virtualization technology can expand the capacity of hardware and simplify the process of reconfiguring software. CPU virtualization technology can simulate multiple CPUs in parallel with a single CPU, allowing one platform to run multiple operating systems at the same time, and applications can run in independent spaces without affecting each other, thereby significantly improving computer work efficiency. [0003] As virtualization technology becomes more and more mature, in particular, VMware (vmware) has become bigger and stronger, and has launched a series of virtualization-related products, all of which help users solve the waste of hardware resources, complex IT mana...

AI Technical Summary

Problems solved by technology

[0006] Therefore, when backing up a virtual machine based on VADP, there will be the following problems: In the case of full backup and VADP changed block tracking technology failure, incremental backup will back up the data of all sectors of the entire virtual disk , even if the actual amount of data on the virtual machine disk is small, or even an empty disk

This will not only make the backup time of virtual machine backup longer, but also the long-term virtual machine backup will affect the performance of the virtual platform itself. In the end, customers will have to provide expensive storage media for a lot of useless data, and it will also affect possible future recovery. duration

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