Backing up virtual machines (VMs) requires choosing an appropriate strategy. It’s possible to back them up similarly to the way physical servers are backed up, but that isn’t an optimal solution. The characteristics of virtual machines offer alternative approaches to backup that provide more flexibility and make restoring VMs faster.

Traditional Backup Strategies

The traditional way of doing backups, developed with physical servers in mind, uses one of these approaches:

  • Full backups. All files on the server are backed up.
  • Incremental backups. Files changed since the last incremental backup are saved.
  • Differential backups. Files changed since the last full backup are saved.

Full backups take the most time to create, but are fastest to restore. Using an incremental backup strategy means recovery requires starting with a full backup and restoring all the subsequent incremental backups. Recovery with differential backups requires the latest full backup plus the most current differential. To create the backups, an agent must be installed on each server.

Virtual Machine Backup Strategies

Using virtual machines allows different backup strategies:

  • Traditional backup. Use one of the physical server backup strategies.
  • Image backup. Create a full backup of the virtual disk file.
  • Synthetic backup. Combine the full backup with the changed files to create restorable image.

You can perform traditional backups on a VM by installing an agent on the virtual machine. VM-specific backup tools don’t need an agent, instead using the VM’s API to identify the changes needing to be backed up.

Backup tools designed for VMs have other benefits as well. By creating a snapshot file, VM backups can be performed without shutting users out of the system. They’re able to integrate with the VM management tool and discover VMs and the hosts they run on. This means that a VM’s backup strategy doesn’t need to be updated if the VM moves to a different physical machine.

Challenges of Combining Physical and Virtual Machine Backups

Using different strategies and different tools for backing up physical and virtual machines allows the backup strategy to be tailored to the data, but can make it harder to monitor the backup process and make sure all machines are being backed up successfully.

It’s important, then, to develop a backup strategy that meets the individualized needs of physical and virtual servers without introducing complexity. Using tools such as Veeam, which are designed to work across physical, virtual, and cloud environments, makes it easier to implement backups tailored to each environment without complicating management.

Have you implemented a backup solution that works across all your environments? If you’re finding it complicated to meet all your requirements, talk to dcVAST. Our experienced team will help you create and manage a backup process using tools like Veeam Availability Suite. No matter where your data resides, working with dcVAST can help ensure that it is backed up, protected, and ready to help you recover when needed.

Optimize Your Cloud Spending and Cloud Performance

Working with experienced partners like VAST is the best way to ensure you make the right cloud decisions.

The Three Pillars of Information Technology Rest On A Single Foundation: VAST Support

With 30 years of IT services experience and partnerships with top technology firms, VAST’s services enable you to run your business on a solid base of reliable technology.

Information Technology Services Tailored to Your Technology and Business Needs

VAST offers three kinds of IT services that can be as extensive or focused as your business requires.

Strategic Solutions Driven By Business Needs and Technical Insight

The strategic solutions crafted by VAST help you make the most of the technology you have and ease your transition to a more effective digital business.

The VAST Difference

Since 1989, VAST has been providing enterprise-level IT service and solutions to companies of all sizes and industries across the U.S.