Hyper-V

Hyper-V is a native hypervisor; it can create virtual machines on x86-64 systems and supersedes Windows Virtual PC as the hardware virtualization component of the client editions of Windows NT. A server computer running Hyper-V can be configured to expose individual virtual machines to one or more networks. Hyper-V Server supports remote access via Remote Desktop Connection. Administration and configuration of the host OS and the guest virtual machines is generally done over the network.

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Hi There,
I am running a server 2012 r2, of which I broke up the nic team to test performance difference. Now I am stuck with a virtual ethernet adapter that I need to remove in order to redo the teaming. The cmdlt for "vmnetworkadapter" is not working.
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Is there a way to block a tech with domain admin rights from signing onto my Hyper V server but allow them to login to the VM's?
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I have a windows 2012 server STD.
I have running on it 4 VMs that I would like to replicate to another server.
unfortunately that server is not joined to my domain and hence the replication does not work.

my question is the following. Does joining my server to my existing domain disrupts the VMs functioning ? Do I need to backup the VMs and after joining the domain re-create them ?
or they will start up normally after I join the domain and restart my server using the domain admin account ?

Thank you.
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hello
i have server with 2 nic that is connected to to netgear switch
the ports on switch is taged with multi vlan id
i have a pfsense on vm named fw
fw vm have 6virtual nic ... 5 connected to nic1 with defernet vlan identfy and its work fine with pfsese
the 6 virtual lan card connect to second nic and i have multi vlan setup on pfsense was on ita but its not working
how i can make trunk this virtual nic ?
thanks.
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Can somebody help me please. I have 2012R2 hyper-v cluster with two nodes and an IBM Storewize v3700 connected over SAS. I can't figure out how much free space there is in storage volume (I think free space isn't freed up on storage)

For example, in hyper-v cluster console, there is clustered volume "brzi" ("fast" in english) which corresponds to volume on storewize. It shows size of 1.50TB and free space of 676GB, app 50%.
 CSV
In Storewize GUI, i have 1.5TB pool with 1.5TB volume ("brzi"), that is available to cluster hosts, and it's seen in the image above as clustered share vo .
But when looking in properties of that volume, free space doesn't match free space reported to the cluster (676GB). The files when selected from host, really takes only about 50%.
Storewize VolumeIt's seen as space is entirely used....

Thank you
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Greetings All,

I have a client with two 2012R2 Hyper-V hosts.    I shut down a guest VM, also running Server 2012R2 to ensure it's checkpoints were merged.   When I wen to power it back on, it's settings for Controllers, Disks and NIC are all gone.    The VM was stuck in a backup state and I was going to move the checkpoint folder to a larger volume.

Any idea what I can do to get the configuration back?

Thanks
Fred
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Hyper-V ran out of space so I deleted a total of 300gb of old SQL transaction log files and old database.
I now have 300Gb of free space on the Hyper-V but the physical host drive is still out of space. Why and how do I get the 300gb of free space back on the physical disk.  FYI. The host server has a total of 900gb. The drive is partitioned into a C: drive for Windows OS (200gb) and a D: drive for the Hyper-Vs
(700gb). The D drive keeps running out of space and then shuts down my Hyper-Vs. I thought after deleting 300gb off the Hyper-V that it would also give the 300gb back to the host D drive. Desperately need help and please give step by step instructions.
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I have a general question about CPU scheduling that I don't completley understand, using Hyper-V as an example.

The general consensus is that you should assign only the amount of vCPUs to a VM to satisfy the workload. It would not be recommended, for example, to assign 4 vCPUs to a VM that only ever needs 2 to run all it's threads and be happy.

I get that, but why does it really matter? A 4vCPU VM can simultaneously request 4 threads from the hyperadvisor, which it will distribute across the physical cores. If that same 4vCPU VM only ever requests 2 threads, the hyperadvisor will just deal with those 2 threads. What does it matter if that VM is a little over allocated?

I'm just trying to understand why it's "bad" or a waste of resources if the hyperadvisor is only going to process the actual CPU work that needs to be done.
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NIC Teaming Hyper-V question. Do you NIC Team on the guest or the host?
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SetUp:
  • 2 x Hyper-V 2012R2 Hosts
  • 2 VMs on Host 1
  • 2 VMs on Host 2
  • Clustered Storage Volume via iSCSI
  • Volume 1 is attached to Host 1
  • Volume 2 is attached to Host 2

Issues:
  1. Unable to migrate VMs from Host 1 to Host 2
  2. VMs from Host 2 can migrate to Host 1

Errors:
  • VM 1 from Host 1 throws a 21502 Error
  • VM 2 from Host 1 states "Clustered storage is not connected to the node
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Im setting up Veeam backup and replication to backup my vm. the host is a server 2012, the vm is a linux [with the windows vm I have no issue] In the Guest Processing tab at the  Guest OS credentials, when I run a task it fails. Itreid with my user and pass and with the root none work.
 Veeam1.JPGVeeam2.JPG
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The local disk of one of my hosts (Hyper-V) is running low on disk space. When I look at windirstat, it shows that there are a couple vdhx virtual hard disks that are eating up all the space. I have a NetApp that I attach to my hosts (2 hosts total) and thought that all vhdx should live on that? Is it safe to delete these to free up space?

2019-03-26-15_23_03-els-hv01---Remot.jpg
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My computer is part of the domain and when in the office I use Hyper-V manager on my local machine (windows 10 pro) to manage our Hyper-V hosts.     However when I am working out of office in my home office I connect to the office using a VPN client.    And although I have access to the servers through Remote Desktop my local Hyper-V manager will not longer connect to the servers to manage the hosts.     The error is RPC server unavailable.   I have researched this error and have yet to find the solution.
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We have several Generation One VM's running in Hyper-V.  We have a requirement to enable Secure Boot on all machines, including VM's.  UEFI doesn't seem to be an option unless the generation one's are converted to generation 2.  I can't seem to find any solutions to this issue.
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I have a scsi card that we are trying to pass through to a virtual machine using vmplayer. The SCSI card is used to control a high end printer and not for a hard drive. I have considered vsphere or hyper-v server but want to see if it is possible with what we already have installed .
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I have a Hyper-V virtual machine that is currently offline, but i don't know the name of its host. Is there any way to look up this info?

I know there are commands to log into a running VM and get the host info, but that doesn't help me here.
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Have a 4yr old box running server 2012 with HyperV and running 5 VMs - am replacing with a New server 2016 and moving the VMs across.
Can i just enable replication of the VMs to the new box and then turn the old off ? Am I better to export and import in ?
Will I get issues with hardware being different / Host server name being different ?

Any pointers appreciated - its a live system so dont want to mess it up and have downtime.
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Hi

We have problems with Microsoft Definition Updates on Windows 7 Clients. According to Woody there is a problem:
https://www.askwoody.com/2019/windows-defender-security-definition-problems/ 

Error 1
Error 2
All physical devices are affected. Are you also affected? Are there any workarounds?

Thanks
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Hyper-V running out of space. In my physical server's hard drive I have the following:
D:\hyper-V\SQLHYPERV\Virtual Hard Disks\SQLHYPERV which is a Hard Disk Image File and it is 717,131,776 kb

The Physical D drive is only 917GB. Is there anyway to shrink this file?  Or is there anything I can do to free up space or stop it from running out of space.
The physical server is running windows server 2012R2 with 4 600gb SAS drives in a raid-10 configuration so I'm only getting a little less over 11gb total space.
I have a 200GB C: boot/windows drive and the balance of about 917GB on D: drive.
I have 173GB free on C: and 130GB free on D: drive.

I'm running two Hyper-Vs on the one physical server. SQLhyper is using 685GB and APPShyper is using 100GB.
I've been running these hyper-Vs for just over three years with no problem.
Is it possible that I have a setting wrong. Any help would be greatly appreciated.

I know I'm going to need larger drives but that is not easy to do with a raid-10 configuration. I need a fix for now until we can find the time to
replace or add more drives.
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How do I remove the snapshots on a hyper-v. Can not edit the disk because- Edit is not available because checkpoints exist for this virtual machine.
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I inadvertently removed the virtual switch on a Hyper-V installation.  I installed another one, but the virtual machines cannot start.  Is there a method to restore the virtual switch on the server.  The )S is Server 2016 Standard.  The server is a Lenovo TS550
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Hi,

I have a Dell PowerEdge R430 server with Broadcom Network Adapter, Server 2012 R2 OS.
I am unable to ping or remote to the physical server, but strangely the VMs hosted on it are fine and I can reach them.

Any idea as to the cause and possible solutions?
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Is there a stripped down windows 10 solution ideal for virtualization?  Either a premade image or legit and safe software to make a lite ISO using an original media?  I see lots of stuff on the internet but much of it looks suspect. I also see one by microsoft, but it's actually preloaded for development and kind of the opposite of that I am looking for.
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I have a VM (Windows Server 2016 R2) created from a Hyper-V server running NIC Teaming. The server in question can see the internal network on its virtual NIC but cannot surf the Internet no matter how I configure the NIC. Even when I add other virtual NIC's to the server, I still can't get to the Internet. The NIC reads 'unknown network'. All other VM servers on this same Hyper-V server and using the same NIC Teaming works fine and can connect to the Internet.
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I'm trying to test a Live migration between clustered Hyper-V Hosts and each time i try i get the following error

Live migration of 'Virtual Machine NPCARDAX' failed.

Virtual machine migration operation for 'NPCARDAX' failed at migration destination 'NPMPVH04'. (Virtual machine ID 20916DA3-F57D-4DA4-80C9-9B700EC3D5F2)

The virtual machine 'NPCARDAX' is using processor-specific features not supported on physical computer 'NPMPVH04'. To allow for migration of this virtual machine to physical computers with different processors, modify the virtual machine settings to limit the processor features used by the virtual machine. (Virtual machine ID 20916DA3-F57D-4DA4-80C9-9B700EC3D5F2)

I can confirm i have ticket the Processor compatibility box under cpu settings, both servers are HP DL360 Gen10 that were purchased at the same time and are both Dual CPU
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Hyper-V

Hyper-V is a native hypervisor; it can create virtual machines on x86-64 systems and supersedes Windows Virtual PC as the hardware virtualization component of the client editions of Windows NT. A server computer running Hyper-V can be configured to expose individual virtual machines to one or more networks. Hyper-V Server supports remote access via Remote Desktop Connection. Administration and configuration of the host OS and the guest virtual machines is generally done over the network.