The backup tool instructs the Hyper-V host to create a checkpoint.Īfter receiving the command, the hypervisor creates some data files, and VM starts saving changes in the files. The backup creation is on the Hyper-V host rather than the guest OS, on which VMs are running. How Does the Hyper-V Virtual Machine Backup Work? Today, let’s see how our Support Engineers set this up for our customers as part of our Server Management Services. Rootman Posts: 243 Joined: 1.Although the Hyper-V environment provides quite a lot of technologies it is always best to implement traditional ways to backup Hyper-V Virtual MachinesĪt Bobcares, we often get requests to configure backup on Hyper-V Virtual Machines for our customers. It take minutes to create a new VM in VBOX, boot to the same PE and use ghost to make a clone. I boot to PE, chkdsk and defrag the VM and then back it up, takes 30 minutes and I get a clean backed up OS I can restore files or folders from. To me it looks like you loose all the advantages of having a *virtual* machine and get all the disadvantages of physical ones. Your way is also a lot more overhead and downtime to perform a backup.įinally if the VM is properly maintened, I don't see where you can gain space : the VDI should be compacted regularly to keep the size as close as possible as the real data. I can see reactivation issues in Windows and booting issue in Linux. Noteirak so you backup the content of the VM, but not all the extra metadata associated with it? That would also cause the same issues as physical PC : you will encounter issue if you try to restore that ghost image to a new VM, since the UUIDs are different. Including running Timemachine or any other such util on them. Sometimes people forget that you can treat these VMs just like any other machine and fix 'em or abuse 'em the same ways. I've restored complete OS's or just damaged parts using Ghost Explorer and just drag and drop what I need back to the drive. I do the same for VMs just by mounting the ISO to the same PE and boot to it and cut a Ghost image of the OS to a network resource. On a "real" PC I stick my thumbdrive in a USB slot, boot to it via Easy2Boot (a SUPERB set of scripts that uses Greb4DOS to make booting damn near ANY ISO as simple as drag and drop) to Windows PE and back up / reimage or work on the drive.
Yep, I treat the VM just like I treat any physical PC. I replaced it with a new drive, booted my OS X DVD, restored from the backup and an hour later (to borrow from Service Pro's motto), it was like it never happened. Time machine proved itself to me when I lost my boot drive to a hard mechanical failure. PeterNosko wrote:Do you mean individual files on the VM? FWIW, I map the My Documents folder to a shared "network" folder on my host and let Time Machine back up all my data files.
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