Hi, this is beyond belief. The ipconfig in guest shows MAC address a, and the host has MAC address b. However, the guest reports that dhcp sent it an address that was already in use. Upon checking the log of the router, I realised that it DHCP server recieved
the request from address b, which is the host's MAC. Any ideas on why this is happening? I have tried changing routers but the symptoms are still here.
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Host changing MAC of guest
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C0000142 error during OSD to Hyper-V VMs. Disk can not be formatted.
This is happening every time any VM is loaded. The server was rebuilt with Server 2012 R2 Datacenter edition.
VMs are using Generation 1 .vhdx disks. This issue occurs with IDE and SCSI controllers.
Task sequence starts but when attempting to format the disk, the disk returns 0 bytes free. This happens 100% of the time. Attempting to use diskpart to create a partition and format is about 40% successful. When it fails several errors could be returned, sometimes it seems to be losing contact with the virtual disk controller.
This is our lab server and worked great previously with Windows 2012 Standard Edition. Any help/pointers would be helpful, I'm completely lost as to why this would happen.
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Lord Ola
Hi All,
Straight to the point.
I have virtual machines that were created in VMWARE given to me by a friend. And I only have Hyper-V and want to use Hyper V to work on these virtual machines.
Converting the VM files from .vmdk to .vhd / .vhdx isn't my problem, the problem is each of the virtual machines have multiple .vmdk files.
eg WS2K12- Windows server 2012- has like 3 .vmdk files (14gig, 8gig, 4gig) and some other files in them.
I need the whole W2K12 to be .vmdk so that I can convert it to .vhd/.vhdx with ease.
Any help will be appreciated.
Thanks in advance
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Best Setup
Hyper-v 2012 R2. I am trying to understand the best configuration for our VM's. The VM's in question are RDS 2012. My question is about vCPU. This VM has 5 vCPU's and 4GB RAM (dynamic) with 80GB fixed HDD. Some technet articles say, depending on the CPU config, to use/not use dynamic memory. So i am trying to find out our best CPU config. Here is the current NUMA settings:
What is the recommended vCPU settings for a VM?
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How to find the GUID of a VM by using Powershell?
Hi all;
Is there any Powershell cmdlet to list the GUIDs of VMs?
Thanks
Please VOTE as HELPFUL if the post helps you and remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.
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Network Drop issue
Hi Friends,
We have a scenario.
Os: Windows 2012/2012R2 running on 2 Hosts.
On top of this Hyper-v is Enabled with Clustering configuration.
On top of Hyper-v, Exchange 2010 CAS Servers are running on two VMs
On both CAS VMs, Under Private NIC Configuration, MAC Spoofing is enabled.
On Exch CAS Servers, WNLB is configured in Unicast Mode
Issue is:
When WNLB Cluster in formed, after sometime, all other VMs running on two Hosts experience network drop issue. When we remove the WNLB Configuration, after some time, issue disappears.
Wondering, what could be the issue and any suggestion towards troubleshooting are welcome.
Best Regards, Ranjit Singh
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IOS RDP keyboard
Hello,
No matter what version of IOS RDP app iphone/ipad I cannot not use the keyboard to input the login on the hyper V VM. I can RDP into the Hyper V server and use the keyboard, but once I'm in the Hyper-V Server and double click on the VM I cannot login using the keyboard, but mouse works. The ios RDP, not matter who makes it, it used to work a year ago, but not anymore. However it works from any windows workstations with no problem with RDP. Any idea on what's wrong? Is it the server or the app itself?
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Hyper-v 2012 R2 checkpoint fails
Hi all,
Need some advice please.
When trying to make a checkpoint on a virtual machine (only happens to this one) I get the following messages:
'My VM' could not initiate a checkpoint operation: The directory or file cannot be created. (0x80070052). (Virtual machine ID 5E4B7C4C-6F95-498D-BDA5-AF917B0D4B5B)'My VM' could not create auto virtual hard disk C:\ClusterStorage\Volume6\My VM\My VM_disco_E_CA282C1F-35FE-4928-B56D-80C4C1C938B5.avhd: The directory or file cannot be created. (0x80070052). (Virtual machine ID 5E4B7C4C-6F95-498D-BDA5-AF917B0D4B5B)
thanks in advance
Miguel
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General questions to get started with virtualization server cluster.
Hello all, this is my first time posting here in the tech net forums. I am a software development student and have been spending most of my time lately in Linux. First I would like to apologize if I am at all not complying with the forum ethics or protocol based on the fact that I am rushing to get this post in and wasn't able to do as much reading as I would normally like before posting. If my questions seem to be to noobish feel free to just tell me so. That being said, I would appreciate some help. My systems have been down now for the better part of a month with trying to figure out, not how to configure the system I want, but rather to find a system to configure and be able to stick with it without running into issues that make me start researching a whole new system.
So for a quick explanation of what I am trying to accomplish:
I am looking to utilize the equipment I have, and put together a small virtual machine host. The last few weeks I was working on building a Proxmox cluster which overall seemed to be pretty close to what I want, however the compatibility just isn't there yet in my eyes for a home use server. I am trying to take basically the 5 or 6 PCs that I have already built, and configure them into a cluster that will be able to hopefully utilize as much system resource as possible. From what I have learned in recent, this is referred to as a Beowulf cluster, or just a virtualization cluster. So ideally I want to combine the 5-6 processors to form one "super computer" that will serve as nothing but a virtual machine host. I am sorry if I am using the wrong terms for any of this but like I said, I am just trying to figure it all out still. What is the best Microsoft OS to use to do this? I am currently looking at either Server 2012 R2, but I have also looked briefly into Systems Center 2012 R2 and really like the look of this. This is just for my personal use. The reason I am looking to do this is that I currently use many different OSs and have many different tasks that require different configurations. The bulk of the work I am doing, coding, 3D rendering, video editing, a lot of Autodesk and Adobe work. Then of course I would like to be able to do some gaming still but haven't even begun to research to feasibility of gaming on a VM because of course my main priority is the work. So is there a way that I can pull this off? I am planning to start purchasing some server racks, like a 9 or 12U wall mount rack that I was planning on putting about 4 or 5 2U atx cases in. Right now in my small office I have 5 fully built atx towers and then multiple laptops and tablets and chrome books and bla blah! It is just too much so I am looking for a way to consolidate. Also, regarding the 3D rendering, if there is a way to utilize multiple processors at once in this same config, that would be great. I have again done some research on "render farms" which sounds similar to a Beowulf but I just need to focus in an area that I can research more thoroughly because right now I just keep jumping around every time I think I have found a better solution. Please help! Thank you very much to anyone who takes the time to help me with this task. It is very much appreciated!
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Why not put all VMs and replicas in the same default folder?
By default, VMs are stored in \hyper-v\vm and replicas are stored in \hyper-v\replica\. So, when you failover, your new mission-critical VM is located in the replica folder. This is confusing and its a pain to move the replica back to the default hyper-v\vm folder.
Comments and suggestions welcomed.
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Guest won't start when usb isn't plugged in
Hi
I may be trying to do something that just isn't supported or maybe I'm just missing something simple. My host is running Hyper-V Server 2012 R2 and the guest is Server 2012R2 Standard
I have passed through two usb drives for backup purposes. The server only has one usb drive plugged in at any one time as the other is taken offsite. The drives are connected to a scsi controller in the guest settings.
When trying to start the guest it errors with an error and won't start until I go into the settings and remove the drive that isn't plugged in. This then requires me to reconnect the drive when they are swapped around.
Is there a setting to tell the guest to ignore missing drives on startup that I'm missing?
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Using Disk2VHD to P2V a Server 2003 Machine
I'm trying to P2V a 2003 server to a Hyper-V 2012 R2 server. I've used Disk2VHD before with no issues. For some reason on this machine after I create the VHDX file and a Virtual machine and try to boot the server I get a 0x00007b blue screen. I don't
have SCVMM in the environment, I'm hoping someone can point me to a solution where I can successfully P2V this server.
Vincent Sprague
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Hyper-V - Replica - Initial replication stopping
Hi
i have setup 2 Hyper-V host's with local storage.
network between the servers: 1gb (i monitor the traffic on the switches, and the 1gb connection is not fully utilized so bandwidth should not be a issue.)
storage 12x5tb RAID6
host are in the same domain, and replication with Kerberos is enabled on the destination host.
I have setup replication of a big file server (18tb), there is no changes on the file server during the initial replication.
i get these events on the source
on the destination host:
Hyper-V failed to apply changes on target for virtual machine 'SERVERA'. Possible reasons are loss of network connection with the primary, the replication was suspended or cancelled on the primary: An unexpected network error occurred. (0x8007003B). (Virtual machine ID 427D4FCC-FA8A-4245-8CCD-8CCB2FB4BE0F)
After this i have to resume replication, seems to work, but the replication have stopped 5 times, and i still have 9tb left to replicate.
Any ideas?
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Single license of WS 2012 OLP, then downgrade to WS2008 R2 with 2003 SP2 on hyper-V VM?
Hi,
I'm seeking an answer, that if I purchase WS 2012 Standard OLP. Then downgrade it to 2008R2 and install into a physical server. I understand that one WS2008 R2 is ok to have one VM running Hyper-V. In my case I would like to run 2003 SP2 on hyper-V which is using Virtual Key from this single license.
My question is, do I need two licenses? Or single license is enough?
My requirement initially is, there is one apps that still need to run on WS 2003, but Dell R730 does not support WS 2003 anymore. So Hyper-V is a plain solution that I can thinking off.
Nikorn Soemklang
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DC on a Hyper-V cluster
Hi there,
I have a 2 node Server 2012R2 Hyper-V cluster and a stand alone Hyper-V 2012R2 host. I have one virtualized DC on the standalone host and one on the cluster as a highly available VM. Can someone please advise if I need to assign static mac addresses to the nics on the virtualized DCs. Some people seem to say yes and other that there is no need to. If the answer is yes, then what would be the best way to go about it given that the DCs are already virtualized? My concern is that if the Mac address changes, will it affect AD in any way.
Thanks very much,
HA
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RDCMan VM console connect resolution?
I feel like I am missing some really small setting but I can't figure out how to configure connection screen size / resolution when using RDCMan 2.7 and VM Console Connect? If I use RDP connect it fills full window but if I use VM connect it is just 1024x768. If I use Hyper-V Manager to VM connect I can select size but that doesn't seem to affect RDCMan connection. Any hints on what I am missing?
Brian
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Hyper-V Network Configuration Problem - Virtual Switch
Hi guys,
I'm looking for some help with a Hyper-V Network issues. I have been handed over a project by a client that is not fully complete and the person who built it is not available at all. The setup is a HP C7000 blade chassis and a HP SAN.
The previous guy built a hyper-v cluster with 2 nodes; HV1 & HV2 - this works fine, I can live migrate etc and all is good.
This is how it was handed over to myself, my job is to add the third node to the cluster so I have installed the OS, drivers etc. Hyper-V role and clustering role. My problem arises with the Hyper-V switch configuration.
Points;
- Each node has two NIC adapters, both of these network adapters are teamed
- A virtual switch is created on each node using the aforementioned NIC Team
- On the existing nodes I can see the management IP for the node is set on the virtual switch adapter
- On the third node (HV3) I created NIC Team using both of the NIC's, I then created an external virtual switch using this teamed network adapter. However when I try to apply a management IP address to the virtual switch adapter it won't respond and I see a yellow triangle on the network adapter in the corner. When I remove the virtual switch and apply and IP address to the NIC Team the server is contactable and shows in the Cluster manager as up. However the problem then is I don't have a virtual switch.
If someone could help me with this that would be great - please tell me if you require further information.
Below is a screenshot of the adapter for HV1 (working fine) from failover cluster manager;
thank you advance :)
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Help needed setting up cluster communication network
Hi,
I need some help setting up a two node cluster communication network.
I have two virtual Servers each with four virtual nics.
I want to create a network for:
Management
Heartbeat
Live Migration
iSCSI
What type of switch would I need to create for each of them? (External/Internal/Private)
I presume that they would all have to be external as they will have to be able to communicate with the other host in the cluster through the physical network.
Would I need to configure VLANs on the physical switch to keep the traffic isolated?
Thanks
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Server 2012 r2 Hyper-v guest network speed with 10 GB NIC's
Hi
Setting up a Server 2012 r2 Hyper-v host with an onboard 4 port 1 GB nic and a offboard dual port 10 GB nic. We are using the 1gb quad port for management. The 10 Gb we intend using for hyper-v guest use however we don't seem to be able to achieve very high speeds though the 10 GB adapter when assigned to a virtual switch. Testing the 10 Gb nic from the host confirms that we can transfer/get 10 GB speeds. When assigned to a virtual switch however the speed drops to about 1-2 Gbps. Has anybody seen anything like this ?. We've tried a variety of settings and i can confirm that the network traffic is using the 10 GB nic.
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Hyperv networking nic teaming and vlans
I would like to bring up the topic of Hyper V networking and using nic teaming along with vlans via Windows Server 2012 R2. I come from a Vmware shop one of our sister companies is going Hyper V so I decided to read up on it. From what I've read
you have to configure vlan tags on each individual vm. So I would like to ask why can't I just create a nic team in windows than create sub teams off of that? After that go into the Hyper V switch manager and create a vswitch that's attached to the sub teams
nic. That way an admin does not have to go into each vm to assign a tag to a guest vm. I was reading that this is not recommended and you should tag each vm with the tag of your choice. I know that if you have a lot of vlans this would result in a lot
of vswitches. However, if you are configuring management traffic or storage traffic than it's ok to use a sub team. So in short why is it not advised to use sub team interfaces with virtual switches?
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