Virtual machine snapshot backup based on multilayer De-duplication

摘要

The present disclosure provides an example method and system for virtual machine backup based on multilayer de-duplication. A virtual machine snapshot is divided into multiple child data blocks. Each child data block is divided into multiple data segments. Multilayer de-duplication is applied to the virtual machine snapshot to exclude data causing duplicate backup in the virtual machine snapshot. The remaining virtual machine snapshot data after the processing of the multilayer de-duplication is stored.

主权项

1. A computer-implemented method for virtual machine snapshot backup, comprising:
dividing a virtual machine snapshot of a virtual machine into one or more child data blocks; dividing a respective child data block into one or more data segments; applying multilayer de-duplication to the virtual machine snapshot; periodically scanning the backup storage file system; and based on one or more data repetition characteristics of data storage, extracting data whose repetition rate is higher than a preset threshold into a public data set.