Why Backup Virtual Machine?
Virtual machine provides customers a complete operating system based on virtual hardware. It is similar to real computers. And, as the number of server virtualization grows, backing up and protecting virtual machines has become an increasingly important issue. Here are two main reasons.
Cannot afford data loss. Asumming you have hundreds of virtual machines and never backed up virtual machine, then your losses will be incalculable once the system crashes, or other accidents happen, such as, virus attack, disk failure, hardware failure etc. Therefore, VM backup is imperative.
Resource management of data center is complex. To ensure that the virtual machine is always available, rapid disaster recovery and reliable fault recovery capability, you needs many skills. Therefore, this is not a wise choice, time-consuming and no-gurantee.
Is a VM Snapshot a Backup?
Snapshots can capture state, data and hardware configuration of a running virtual machine, so you can quickly and conveniently restore virtual machine to its previous state. The data files are stored as .Avhd files and it will take up much storage space if you create multiple snapshots.
Then, many users are advised to create a VM Snapshot for virtual machine, such as, VMware, when using a virtual machine. As a result, they started to treat VM snapshot as a backup, just like the system restore point in Windows 7/8/10. But this is not the case.
VM snapshots work in a "chain", that's to say, it relies on the base virtual disk infrastructure and delta disks in place to reflect the current virtual machine state. What's worse, if any of the disk in the chain is damaged, the whole chain becomes damaged.
Also, VM snapshots have some disadvantages. First, you cannot go back to the current state of your machine. Second, you cannot simply restore individual files, or data/system partition, it's limited to entire machine. Third, increasingly number of snapshots make LUN to be locked and decrease the performance of a VM.
What Is a Backup?
Now, you probably know that the VM snapshot is not a backup. Then, you may wander about what a backup is and its difference. Without further ado, let's have a closer look at them.
First of all, the backup refers to image-level backup, which can make a snapshot of your entire operating system and all of the data and applications associated with it, including virtual machine hardware and settings as well.
Second, it can be used to restore your system or files as needed.
Third, it usually has multiple copies if you schedule backup virtual machine.
Fourth, it can be stored on different locations, such as, physical drive, external hard drive, cloud drive, NAS, etc.
Last but not least, it does not rely on any part of the production infrastucture.
In addition, the usability and security is guranteed, so you can encrypt backup, compress backup, split backup, check backup integrity, manage backup disk space.
Step by step guide: Backup Virtual Machine Effortlessly
Issues to Consider When Backup VM
Don't backup VMware virtual machine while running or suspended, otherwise your data in that state may not be restored properly.
Limit the backup number of virtual machine. VMs take up too much resource usage and storage devices on a host while creating a backup for your machine, so you can delete backup files periodically.
Make sure your backup server has enough resource.
Method 1: Backup VM as a Physical Machine
This is the first VMware backup strategy to backup VM with AOMEI Backupper Standard. With it, you can backup disk to physical computer or other computers via network. Also, you can backup virtual machine to external hard drive, such as, USB flash drive, HDD, or SSD. The premise is to connect your drive to virtual machine in advance.
Before backing up VMware virtual machine, please download AOMEI Backupper Standard on your virtual machine and install it.
Step 1. Launch this software, click Backup and Disk Backup. Also, you can backup system, partition or personal data of your virtual machine.
Step 2. Click Add Disk to select the disk you want to backup.
Step 3. Select a destination to save the backup image.
>> To backup to physical computer or other computers, please click the inverted triangle button and Select a network location, then pitch on Add Network Location and type required info, including IP address, username and password. Then, select a shared folder as destination path.
>> To backup to external hard drive, please click where the arrow point and click This PC to find your disk.
Step 4. Click Schedule to set automatic backup per day, week, or month. Then, run the backup task by clicking Start Backup.
◕ To prevent unwanted access, please encrypt the backup image during the process. To make it, click "Options" and "Enable encryption for backups".
◕ To check backup integrity, please click the Settings icon during the backup process and tick "Check backup integrity on completion".
◕ To backup only changed data and newly installed applications, it's suggested to use daily incremental backup or daily differential backup. And you can change backup interval as you like. Please at least upgrade to AOMEI Backupper Professional to enjoy these feature.
◕ To backup the disk without interrupting the use of computer, you could consider using "Wake up the computer to run scheduled task" at the bottom. Please set the backup time to off-peak hours, such as, midnight.
◕ To prevent insufficient disk space, you need to delete old backup images regularly with Backup Scheme (supported by AOMEI Backupper Professional).
Method 2: Backup VM Files in Physical Machine
This is the second VMware backup strategy. Here we take VM as a file in a real computer which contains many .vmdk files. These .vmdk files can be backed up quickly, so it is easier. The process is the same as backing up files. AOnce the VM system crashed, you can restore from the .vmdk file backup images. And you don't need to run virtual machine.
Before you start any operation, please make sure the virtual machine is in a power off state. You can check the status by a virtual machine, such as, VMware.
Step 1. Launch AOMEI Backupper Standard. Then, click Backup and File Backup in turn.
Step 2. Click Add Folder to select the folder contains all items of your virtual machine.
Step 3. Select a destination path for your VM files. It can be any detected storage in Windows.
Step 4. Set schedule backup and click Start Backup.
Note: The above methods are also applied to VMware Workstation backup virtual machine, backup virtual machine hyper V, backup virtual machine VirtualBox, and so on.
Written in the end
That's everything related to backing up virtual machine. With the help of AOMEI Backupper Standard, you can backup VM in simple steps. Even more, you can customize the backup interval and backup it to any storage device, such as, external device, USB, CD/DVD, NAS etc. It's easy, isn't it? Try it now.
In addition, it still has more useful features, including scheduled incremental or differential backup, event triggers, USB plug in, create bootable media, PXE boot tool, universal restore, encrypt, and more.