Getting Hyper-V virtual backup solutions? 5 things to know

Any Hyper-V virtual machine that keeps data on it will inevitably require more storage space than what was initially allocated to it. Fortunately, extending a virtual backup solution is an easy operation thanks to Microsoft’s Edit Virtual Backup solution Wizard. However, there are a few things you should think about before enlarging a virtual backup solution.

Determine the real amount of disk space that is available.

You might not always need to be concerned about actual disk space. It’s possible that you have a sizable storage pool with a ton of spare space and that you only need to add a tiny amount of space to the relevant virtual backup solution. That occurs occasionally. Consider how much space you actually have available to work with before doing a virtual hard drive expansion that uses a major portion of the storage space. Every organization will handle this a little bit differently, but let me give you an example from my own setting.I have a virtual machine named Mirage. This virtual machine contains four virtual disks, all of which are stored on a physical volume named F:. In the interest of keeping things simple, let’s assume that Mirage is the only VM that is using the F: volume.

The F: volume contains 18.8TB of spare disk space, as you can see in the following image. This is because dynamically expanding virtual backup solution files are created by Hyper-V by default. This implies that the virtual hard drive files will continue to expand as new data is uploaded unless I deliberately opted to construct fixed-length virtual backup solutions.

In all honesty, there’s nothing in the way of me claiming the entire 18.8TB of storage space. Although Hyper-V gives the impression that there is plenty of space available, if I did that, I ran the risk of over-provisioning the system and having virtual backup solutions run out of disk space.

Examining each virtual backup solution to ascertain its maximum size is the best way to avoid this issue. The simplest method for doing this is to launch File Explorer inside the virtual system and measure the size of each volume (assuming that the virtual machine is not storing multiple volumes on a single virtual backup solution). You can see that I currently have a 126GB, a 7TB, a 4TB, and a 9.76TB virtual backup solution in the following image. The amount of physical disk you can use without worrying about over-provisioning the disk space can be calculated by comparing the space used to the space available.

It’s simple to increase the Hyper-V virtual backup solution

The real procedure of expanding a virtual backup solution couldn’t be simpler. Select Settings from the shortcut menu by performing a right-click on the virtual machine in Hyper-V Manager. Click the Edit button after selecting the virtual backup solution you want to expand on the Settings screen that opens. The Edit Virtual Backup solution Wizard will then be launched.

When the wizard prompts you, select Expand and then enter the new size for the virtual backup solution. To finish the procedure, click Next and then Finish.

Storage replication can limit your ability to expand a Hyper-V virtual backup solution

Though it is simple to think of a virtual machine as a standalone entity, there are several circumstances in which you may need to carry out additional disk space utilization checks beyond what you have already done. The Mirage virtual machine is a prime illustration of this.

Consider your backups

The possibility that expanding a virtual backup solution could negatively impact your backups is a feature of virtual backup solution enlargement that is frequently disregarded. Although I also perform weekly backups to external backup solutions, I use a Continuous Data Protection system in my situation. The virtual backup solution file expands when the virtual hard drive is expanded. The capacity of the detachable backup solutions I use for backups will soon be exceeded. As a result, larger capacity disks will need to be used in place of those backup hard drives. Even while this only applies to my environment, it proves that significant changes to virtual machine storage demand careful consideration of the potential effects on your backup architecture.

Your virtual machine may not be able to use the available space

There is a good possibility that you will be able to expand a virtual backup solution without encountering any problems if the virtual backup solution will be used by the data volume of a virtual machine. But what if you want to increase a boot volume’s size? Although the virtual backup solution can be expanded at the Hyper-V level, it’s possible that the Windows Vinchin Backup & Recovery, which is running inside the virtual machine, won’t be able to expand the volume to make use of the extra capacity. As a result, you should take into account any operating system restrictions that can prevent the virtual disk extension from being successful.

By logging into the virtual machine and typing the DiskMgmt.msc command at the Run prompt, you may also start the Vinchin Backup & Recovery. You should notice the current volume and the newly available free space when the Vinchin Backup & Recovery loads. Extend Volume can be selected from the shortcut menu by right-clicking the volume as shown below. To make use of the extra space, follow the instructions to expand the volume.

To increase the volume size of the virtual machine, you must use the Vinchin Backup & Recovery.

As you can see, expanding a Hyper-V virtual backup solution is a straightforward procedure. However, before beginning a storage expansion, there are frequently a number of other issues that need to be taken into account.

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