Cloud Platform for Networking: Virtual Machine Migration

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The migration is able to save money for management, maintenance, and upgrade, and enables a single server to simultaneously replace the previous multiple servers for saving a lot of room space. In addition, the VM has a unified “virtual hardware resources” unlike the previous server has various different hardware resources, such as the different chipset, network cards, hard drives, and Graphics Processing Unit(GPU). After the migration, the VMs can be managed in a unified interface, and one VM can be switched to another through some VM software when it goes down, which supports the uninterrupted service. In short, the migration has the advantage of simplifying the system maintenance and management, improving the system load balancing, enhancing the system error tolerance, and optimizing the system power management.

The excellent migration tool is expected to minimize the overall migration time and downtime, and limit the negatively performance impact caused by the migration. Specifically, the VM migration performance indicators include the following three aspects:

  • Overall migration time;
  • Downtime, i.e., the source and destination hosts are unavailable at the same time;
  • Performance impact.

The VM migration can be divided into three modes: Physical-to-Virtual (P2V), Virtual-to-Virtual (V2V), and Virtual-to-Physical (V2P) [2].



Pranala Menarik

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