Super User is a question and answer site for computer enthusiasts and power users. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I'm just setting up a Windows 2012 server. In the past, I've always installed and run all services on "bare hardware", but am looking at hyper-v. I've used virtualization with things like MSVPC and VirtualBox before, but never Hyper-V.

Am I right in thinking that one of the advantages would be that if I install Hyper-V on a Windows 2012 R2 Standard installation, then I end up with one or more VHD's (like with MS VPC) containing my virtual installation and that all I would need to do to have a complete server backup would be to backup my VHD's? For a restore, I would simply need to copy the VHD's over to a new server and load them up in Hyper-V? Or does Hyper-V work differently from VPC and I'm missing the point?

Cheers, Adam

[Edit: I guess an alternative is to install the complete Windows Server 2012 R2 in a VM on a Windows 8 box, which definitely would provide the simple backups I'm looking for. My server is powerful enough for this and I already have a spare Windows 8 Retail license]

share|improve this question
I've put a brief answer below, but this question is probably better suited to – sgtbeano Nov 29 '13 at 9:48
up vote 0 down vote accepted

You are partly right, you can just copy the VHD's to get backups of a virtual hard disk, however the virtual machine will likely have to be shutdown unless you use an application which has an agent for Hyper-V to enable online backups.

There's a good technet article here on backup strategies for Hyper-V;

The important part of the article is probably this;

Understanding online and offline backups

Whether a backup is performed online or offline depends on whether the backup can be performed without downtime. You can perform an online backup with no downtime on a running virtual machine when all of the following conditions are met: Integration services are installed and the backup integration service has not been disabled.

All disks being used by the virtual machine are configured within the guest operating system as NTFS-formatted basic disks. Virtual machines that use storage on which the physical partitions have been formatted as dynamic disks or the FAT32 file system prevent an online backup from being performed. This is not the same as dynamically expanding virtual hard disks, which are fully supported by backup and restore operations.

Volume Shadow Copy Service must be enabled on all volumes used by the virtual machine with a specific configuration. Each volume must also serve as the storage location for shadow copies of the volume. For example, the shadow copy storage for volume C: must be located on C:.

If an online backup cannot be performed, then an offline backup is taken. This type of backup results in some degree of downtime. A variety of factors can affect the time required to take an offline backup. If the virtual machine is running or paused, it is put into a saved state as part of the offline backup process. After the backup is completed, the virtual machine is returned to its existing state.

share|improve this answer
Excellent, thank you. In my company, it is perfectly possible for some server downtime at night, so looks like this may be a good option. The only problem is that the current CPU does not support SLAT, but I can deal with that! – AJ01 Nov 29 '13 at 10:11
Glad I could help – sgtbeano Nov 29 '13 at 10:15

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .