14 votes
Accepted

Do Hyper-V Virtual Machine Guest Operating systems need to be shut down before restarting Windows Server 2012 R2 they are running on?

It depends on how your configured your Virtual machines. If you have your VMs configured to 'Turn OFF', then shutting down the host OS would be close to equivalent to pulling the power from the VMs. ...
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  • 128k
12 votes
Accepted

Better to share File Services role with Active Directory DC role OR with the RDS Terminal Server role?

A third VM would, obviously, be the most desirable but, obviously, another Windows Server license costs money. Active Directory will only disable write caching on volumes where the database files are ...
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12 votes

Hardware requirements for 100 virtualized high performance Windows 7 desktops?

How about turning this around: The workstations are in a secured LAN, Internet access is restricted with a proxy to a number of white-listed sites that developers need - like StackExchange :). ...
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  • 597
7 votes
Accepted

Best practice to disable SpeedStep for Hyper-V hosts?

After a bit more searching it seems like this is a general problem with modern server CPUs, even unrelated to virtualization, and major server vendors as well as software vendors like Microsoft and ...
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7 votes
Accepted

Do I need an antivirus program in each virtual machine?

No, you should not be using AV software on the host to scan your VHD location. You can install AV software on the host but you need to exclude several Hyper-V related folders from the real time AV ...
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  • 108k
7 votes
Accepted

Get back hyper-v VMs after in place reinstall of host OS

If you have the files, both the vhd(x) and the machine vmx file, and your system is configured the same with similar vSwitch names then you should be able to use the command Import-VM -Register path\...
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  • 128k
6 votes
Accepted

Can't connect Hyper-V Server 2012 R2 after Windows 10 update?

You will need to enable the use of WinRM to connect to your Hyper-V server. To do this you will need to: Open the Start menu Click on All Programs and then on Accessories Right click on Command ...
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6 votes

Do I need an antivirus program in each virtual machine?

You need to install AV which is specially designed for Hyper-V. It will install itself into host but it will scan VMs and their vRAM, on-disk images and also intercept traffic between VMs and host ...
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6 votes
Accepted

Installing Hyper-V Role on Server 2012 R2 Without the Hypervisor

Sure, you can do this. You have two options: Open PowerShell and run following command that will install only the Hyper-V Manager and it's dependencies: Add-Windowsfeature rsat-hyper-v-tools ...
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  • 5,606
5 votes
Accepted

Convert Hyper-V linux machine to Gen 2

Since this was top result when I tried to find an answer, I'm posting my own solution, even though it's 6+ years since question. (btw fercasas.com in old comments is no longer available so couldn't ...
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  • 176
5 votes
Accepted

hyper-v fails to enable live migration

I don't remember where I ran across this, maybe in the Microsoft forums. Documenting here for anyone else that runs into this issue... Renaming C:\Windows\System32\GroupPolicy\Machine\Registry.pol to ...
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5 votes
Accepted

Hyper-V Point to Point using FC HBA

This kind of setup model is called hyper-convergence when compute and storage are running on the same hosts. From my experience, I have never meet FC HBA that could run replication between 2 directly ...
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4 votes

How do I upload an ISO to the Hyper-V data store?

Another way to do this is to go on the server and create a share. In my case, I ran: net share "Downloads=C:\Users\Administrator\Downloads" "/GRANT:EVERYONE,FULL" which is terribly insecure but fine ...
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  • 1,802
4 votes
Accepted

Two-Node Server 2012 R2 Hyper-V Cluster: Is it possible use local physical disks in the cluster?

Failover clusters require shared storage. Without it, if a machine dies, the data on them is inaccessible and there's no way to failover without the data. I don't believe there is any built in fault ...
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  • 17.2k
4 votes

Two-Node Server 2012 R2 Hyper-V Cluster: Is it possible use local physical disks in the cluster?

Not much to add here since StarWind and HP VSA are already mentioned! Both products provide great value and do exactly what you're trying to accomplish. Keep in mind, you won't be able to shuffle the ...
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  • 5,116
4 votes

What hotfixes/updates does a new 2012 R2 Hyper-V server need?

First of all, you should perform the OS installation using the latest OS ISO available from MSDN or VL; it already includes several update rollups (some of which are quite big), and it will save you a ...
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  • 68.2k
4 votes

How do I safely clone a Linux VM in Hyper-V?

For Windows guests you'd use Sysprep to generalize the VM that you're using as your template. I don't know if something similar exists for Linux. As for the MAC address, each cloned VM will have it's ...
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  • 108k
4 votes
Accepted

Why would a Hyper-V VHD still show 100% disk space used after adding 20 Gig?

You added space to the VHD. You didn't, however, change the partition table on that disk so that the file system on the disk can use the extra space. So, to the guest OS, it looks like a disk with ...
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  • 5,106
4 votes
Accepted

How to configure unpluged NICs on Hyper-V Server

Using command line: First of all, list all the interfaces and note their names: netsh interface ipv4 show config Then configure each interface as following: netsh interface ipv4 set address name="...
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  • 5,606
4 votes
Accepted

Is it possible to reclaim unused space on Server 2008r2 VM without downtime?

Is it possible to reclaim unused space on Server 2008r2 VM without downtime? From my experience, this type of operations (should) require the VM downtime to make things right. Here are steps how to ...
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4 votes
Accepted

Using a replica VM as main VM on replacement server - Hyper-V

I have used Hyper-V replication as a method to migrate VMs. It can work fine. You can't failover(migrate) via replication without stopping the VM during the failover, but that should only take a ...
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  • 128k
3 votes

Virtualizing branch office servers

I'd use option #1, more host manageability. I'd focus other efforts on making your remote sites more resilient... Power is not difficult to protect in the branch office scenario. Buy batteries with ...
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  • 194k
3 votes
Accepted

Perfomance of SQL Server on Hyper-V VM

How long is a piece of string? Generally: Hyper-V is slower than bare metal, but just a couple of percent. The critical point pretty much always is IO. For SQL Server also. Hyper-V will not ...
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  • 50.7k
3 votes
Accepted

Hyper-V 2012 R2 and File shares

Yes it will handle that just fine. But I would recommend separating it from the DC. Setup one VM as just a domain controller and another as the fileserver. It might also make sense, depending on ...
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  • 17.2k
3 votes

Two-Node Server 2012 R2 Hyper-V Cluster: Is it possible use local physical disks in the cluster?

StarWind Virtual SAN is pretty much everything you need. Unlike VM-running home-brewed solution GregL was mentioning this particular one is 100% native to Hyper-V as it's Windows app: simple to ...
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  • 837
3 votes

Hyper-V virtual machine upload speed unbelievably slow

I appear to have solved the issue by disabling large send offloading in the guest operating systems. Disabling it on the host didn't help but disabling it on the guests solved the issue.
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3 votes
Accepted

Bitlocker without TPM on Hyper-V 2012 r2 from the command line?

Essentially, there are 2 registry values that need to be set before Bitlocker will allow a USB drive to be used to hold the startup/recovery keys. You don't need to edit a GPO via a GUI. This is how ...
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  • 1,150
3 votes
Accepted

How to change a VM's checkpoint type from Production to Standard using powershell

You want the -CheckpointType flag on set-vm.
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  • 5,106
3 votes

Windows Hyper-V Server 2012 R2 - domain name

Put the hosts on the domain. Otherwise management of them is more painful tham it needs to be. Its also a requirement if you ever want to cluster the two hosts. However, since all your domain ...
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  • 17.2k
3 votes

Any known fixes for Hyper-V host networking randomly stops responding?

Honestly, the short answer is that you need to switch to Intel nics. Broadcom has been trying to fix this problem for over a year and they still haven't licked it. Avoid Networking Issues Hyper V ...
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  • 2,387

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