Hi all, I've got a question regarding a virtual machines' Power Plan setting. When you create a Windows Server virtual machine, the power plan setting defaults to "Balanced". I've noticed that when its set this way, you can see in Performance Monitor that  the vCPUs in the vm will "park". If you set the power plan setting to "High-Performance", vCPU parking does not happen.

Let's say I've got a six node hyper-v 2012r2 cluster with about 100 virtual machines. Would it be wise for me to set all of the virtual machines' power plan to 'High-Performance'? Any feedback about this would be much appreciated.

I am getting issue while creating virtual switch on Hyper V 2012 R2. After investigation I found the physical NIC I was trying to bind to virtual switch has already hyper v protocol enabled (vms_pp) so I tried to disable it using powershell cmd (also tried nvspbind, netcfg ) but I am getting error saying NIC is already locked by service NVSPWMI. So I tried to locate the that service but it seems like it is not present in Hyper V 2012 R2. So anyone knows how to get rid of these issues.

I have been running into an interesting but an alarming issue with virtual switches. I have recently built a 4 node Server 2012 Hyper-V failover cluster. I have built numerous 2008R2 and 2012 Hyper-V clusters before, so I am pretty familiar with the process. I have rebuilt my VMM due to software problems, and on this new cluster, I have configured the virtual switches with nic teaming on 2 of the virtual switches.

I have 4 clusters being managed by this VMM.. and this newly built cluster keeps losing all of the VMM virtual switch configurations, meaning if I go to properties on the problem host and click on virtual switches, its blank. Refresh host cluster flags all virtual machines in this cluster as "Unsupported Configuration," making the vm unmanageable via VMM. 

All virtual servers on that host still has connectivity, as all virtual switch configs are normal when looking at it with Hyper-V Manager or Failover Cluster Manager..

The workaround is to evacuate the host using Failover Cluster Manager and reboot the host. Then refresh the host. Then refresh the VM's. I cannot consider this a 'workaround' as I cannot be rebooting my hyper-V hosts every week.. and migrating virtual servers constantly just for this reason. (DPM backups have a FIT with csv's if it tries to backup a vm on a same csv as another vm thats being migrated.)

I have been wrestling with this problem for a few weeks now. The cluster has been slicked and completely rebuilt.. Still same problems. Has ANYONE else out there seen this issue? Does ANYONE out there suggest a way to go about further troubleshooting this issue? 

I plan to have 3 servers go virtual.

I'm building a server and trying to figure out how to setup.

Was planning a mirror of 2 x  300 GB SAS drives at 10K for the Hypervisor

And a raid 10  of 4 x 600GB 15K drives for the datastores and storage.

Now I'm wondering if the 300GB mirror is necessary, if I install teh hypervisor on this should I put datastores on this too? and the storage for the data stores on the raid 10?

If I use the mirror of 300Gb for ONLY the hypervisor and all the OS installs and Datastores on the Raid 10, is 300GB overkill? I have been reading about others using flash drives for this, should I downgrade these to 146GB drives then?

Trying to save a few bucks. 

Thank You,

nambi

Hello,

whenever I build new VM on our Server 2012 Hyper-V and add new SCSI disks, the VM becomes very slow while formatting those disks.

The "quick" formatting takes unusally long, for 20 GB disk it might take few minutes, for 200 GB it may take 30 minutes or more.

System Windows log is flooded with events:

Event ID: 129, Source: storvsc

Reset to device, \Device\RaidPort0, was issued.

It happens with either Integration tools versions: 6.2.9200.20873 or 6.2.9200.16384.

I just setup one server 2012 r2 host and two server 2012 r2 guests. There was a storm that came through over the weekend and there was a power failure. I don't know how long but the server is on a backup. On Monday morning when I came to work, I noticed the first guest, an exchange server had a yellow caution on the nic in the tray. I rebooted the server and it cleared. Later in the day, I was working with a Dell tech preparing for a migration and I noticed the other guest, a WSUS server had the yellow caution on the nic in the tray as well and it was telling me it could not contact the default gateway. Rebooting has not helped with this guest. I've tried removing the nic and reinstalling it, but the same issue. I switched it to DHCP, but it cannot contact the dhcp server. I can ping the nic locally, but nothing else. What steps can I take to troubleshoot? Since this is a new install, could I get phone support from Microsoft, if we cannot resolve the issue here? Just not sure how to troubleshoot a virtual nic.

Additional info. This is a Broadcom extreme dual onboard nic. I saw an article about this issue and updating the driver. There was a qlogic driver update on the Dell site, so I downloaded and installed it. No change, so I rebooted. After the reboot, still no change. So, I look under device manager to make sure the driver was updated and I see to cautions:

under Hyper-v virtual switch extension adapter: 

This device is not working properly because Windows cannot load the drivers required for this device. (Code 31)

An object ID was not found in the file.

under Microsoft hyper-v network switch default miniport: 

This device is not working properly because Windows cannot load the drivers required for this device. (Code 31)

An object ID was not found in the file.

I have to correct something, yesterday, I rebooted the second guest server, exchange and the issue cleared, but in checking just now, both guests are displaying the yellow caution and reporting no connection to network. Is this as simple as removing the guest nic and re-installing?

I have a new environment based on DELL R730XD system with Windows 2012R2 host for Hyper-V.  I have 2 Intel i350-t (one daughter card and one add-on).  I have all but one port (7) assigned to Hyper-V switch with no management access, the other assigned to management OS only.  I have 3 Windows 2012R2 Hyper-V guests built - one DC (2 Virtual NICs teamed in VM), and 2 additional servers with one NIC assigned to each.  SR-IOV reports SUPPORTED on all NICS when I run get-netadaptersriov.  In Hyper-V manager for each VM, the Networking tab Status is OK (SR-IOV active).  So why does the BPA in the Host server state "Problem: One or more virtual machines are configured to use single-root I/O virtualization (SR-IOV), but the guest operating system does not support SR-IOV", then SR-IOV functions will not be allocated to the following virtual machines:, then lists all three of my Windows 2012R2 servers.  What to do?

Additional - get-vmhost result  - IOVSUPPORT = TRUE, IOVSUPPORTREASONS={OK}

I have (2) Server 2012 R2 hosts both with Hyper-V role installed. Both systems have (4) NICs. I have made (2) teams on each host and would like Replica\Migration traffic to go over one team and everything else over the other. I have read that this can only be done using certificate-based authentication. Is there a simple way to accomplish this? We don't have a CA in our domain.

Thanks!

Hello,

  We have a two server cluster running Server 2012R2 Hyper-V.  There are 8 NICs in each hosts two are teamed for Production LAN Access, two are setup for live migration, and two are setup for iSCSI communications to a Dell PS-6100.   There is one external switch configured one each host, with the same name, and allow management operations check box is checked.  So far we have not had any issues and this configuration has proven to be easy to manage and very reliable.

  We have an RDS Farm with two RDS Hosts, RDS Broker Licensing Server, and RDS Gateway, the farm is up and running well.  We also have 1 AX 2012 Application Server and 1 SQL 2012 Server that hold the databases.  Shortcuts to launch AX are pushed out via group policy.  

   When we connect to the RDS Hosts and run internet explorer, excel, word, or what ever local app performance is very snappy.  When we launch AX 2012 and try work in it performance is very poor and that's the issue we are chasing.  Yes we do know AX 2012 is somewhat of a pig.  Directly on RDS Hosts performance is good with local apps.  AX performance is poor across the board.

 I did notice that all VMs show 10Gbps NICs.  So in theory as long as the RDS Host, AX App Server, and AX SQL Server on on the same host they could be communicating a 10Gbps however, as soon as they go across hosts the max speed would be the 2Gpbs link between the hosts.  Is that correct?

  We tried to keep the configuration as simple as possible.  Is there something I am missing as far as networking goes?  I have read several articles on Hyper-V Networking, I liked this one the best http://www.altaro.com/hyper-v/the-hyper-v-virtual-switch-explained-part-1/, and think we have networking built out correctly.  Does it seem like it and can anyone offer some suggestion to possibly improve the configuraiton?

TIA,

Jim

Could some one help me how to get up and running with "Hyper-V Core 2012 R2", this is my current setup

I have a computer in a domain, and with this computer im trying to connect with the server manager "http://www.microsoft.com/en-us/download/details.aspx?id=39296" to a Hyper-V Core thats not placed in a domain, by using the tool "HVRemote" and having the same user on the Computer as the server with the same password i have been able to connect with Hyper-V manager.

I have also run "http://blogs.msdn.com/b/virtual_pc_guy/archive/2010/11/11/configuring-remote-management-of-hyper-v-server-in-a-workgroup.aspx"

But what must i do to connect with server manager, currently i just get the error "Kerbos authentication error"?

If i check in the log it says "Configuration refresh failed with the following error: The metadata failed to be retrieved from the server, due to the following error: WinRM cannot process the request. The following error occurred while using Kerberos authentication: Cannot find the computer hypervcore. Verify that the computer exists on the network and that the name provided is spelled correctly."

The reason i don't have my " Hyper-V Core 2012 R2" in the domain is because it will run the domain server if i get every thing to work..

Stream videos from your Windows server 2012 essentials to your windows phone 8 -> http://goo.gl/8tc04O

Hi all

we have continuously receiving below alert

Instance VM NAME:Hv VP

9 Object Hyper-V Hypervisor Virtual Processor Counter % Guest Run Time Has a

value 93.4943618774414 <u2:p></u2:p><o:p></o:p>

Please advice . what is the cause  and what is remedy of this.

Regards

Hey all. I'm finishing up the design for a Symantec Enterprise Vault solution that is going to get migrated from physical hosts to a new Hyper-V implementation. (Complete app migration, not just a P2V.)

For those unfamiliar with the product, EV has two primary storage requirements; slow storage for the actual archived items, and fast storage for the indexes of that content.

The storage backend is going to be a NetApp SAN with two filers, one dedicated to SATA and one dedicated to SAS.  The Hyper-V VMs (3 of em) are going to run on a Hyper-V cluster, consisting of two same-rack physical servers.

The slow storage is easy, as it can just use a standard CIFS share.  The fast storage is what I'm concerned about.

My plan was to use two cluster-shared volumes (both would be FC LUNs from the SAS filer).  The first will hold the VHDs for the VM OS's.  The second will hold VHDs for the indexes. (3 VMs and 3 indexes, so each VM gets an OS VHD and an index VHD.) 

The only concern I have is with those index VHDs.  (Yes, by VHD I mean VHDX.)  They're going to start at about 4 TB each, and could grow as big as 7 TB.  That's a lot of data to be sitting in a single file, and I'm wondering if I'm overlooking an easier way to present those indexes to their corresponding VMs.

Thoughts?  Thanks!

I am using a Hyper-V Host on Windows 2008 R2 Enterprise with Service Pack 1.

My backup and restore program is Yosemite 10.3.00 from Barracuda.

The files on one Hyper-V guest server are restored where they were and they are complete, but yet nothing shows up in the Hyper-V manager.

1) The restore of the guest OS works fine on other Hyper-V servers (Hosts) without an issue

2) It fails to work the Hyper-V server that I am trying to get it to restore to.

3) I have tried creating a brand new VM and restoring it, but it still would not work.

4) The Hyper-V machine has all the latest Windows updates as of today.

5) I have deleted the folder that gets restored and deleted everything from the virtual machine to then restore it.

6) I have stopped all services related to Hyper-V and then restarted them.

7) I have removed the Hyper-V role and then rebooted and then added the role back in and still have this issue.

8) Barracuda says that I need to talk to Microsoft to fix the problem with the server.

9) I don't want to jerry-rig a solution using VHD's because they contain multiple snapshots and I just want the program to work and not try to hack my way through this.

10) Is there a way that I can delete the old settings for the hyper-v host?  Even when I uninstall the role, the settings like the file path of the VM's are still present even when uninstalling and reinstalling the Hyper-V role.

I have researched on Google and haven't found much, any ideas out there?  I don't want to do a reinstall of the OS.

Hi,

My customer is having a Server 2008 R2 host with 1Tb vhd file and over 800Gb avhd file.

I have no space to merge and compact them.

What can I do?

Thanks!

Edward

Hi, 2012r2 host and guest.

We set a guest to 500mbps maximum bandwidth under the guest's Bandwidth Management settings.

However we can still saturate a full 1gbit link from this VM.

How do we get the maximum limit to actually work?

Thanks!

Hello Everyone

This is kind of a high level question and wanted to know peoples opinions on how to setup networking.  Currently we have a few clusters running on 6 1 x GB links and use converged networking to team all nics together and use VMM logical switches to split traffic up into management, cluster, live migration, and VM guest network which using Vlan tags to identify which vlan they are on.

With Cisco UCS we now have 10 GB networking and have the ability to split traffic up at the hardware level and still take advantage of shared bandwidth.  If i am understanding documentation right, I can carve up each nic into smaller Vnics and priortize traffic but still have the full bandwidth on link.

Just wondering what the pros and cons are for each setup.  The obvious one is moving converged networking to UCS is that it would take the network processing load out of host and into FIs.  

Also we are using ISCSI with Nimble SANs.

Please let me know your thoughts and any hyper v best practices.

Thanks

We're in the process of building a greenfield environment based upon a Windows 2012 R2 Hyper-V virtual infrastructure. A 12 node failover cluster (AD integrated) was build, for now 2 CSV volumes are created. We are now working on a virtual SQL 2012 Failover Cluster on top of the Hyper-V cluster. First we created a (Gen 2) VM with Windows 2012 R2 installed on it, then we (offline) added a new VHDX file (on the same CSV volume) and in the advanced features, we select 'Enable virtual hard disk sharing'. We boot the VM, disk manager sees a new disk, trying to initialize the disk and an error states 'The request could not be performed because of an I/O device error.'

If we disable the advanced sharing option, the disk is accessible, can be initialized and a volume can be created. Enable the feature again and we are in the same phase as where we need to (again) initialize the disk which is not possible. We have the same problem with a Gen 1 VM.

The CSV volumes reside on a Dell Equallogic storage and are connected via iSCSI, beta of Dell Hit Kitt is installed on the Dell Blade servers (Hyper-V nodes). The CSV volumes have a 4K blocksize, could this be an issue?

Hello !

We have 4 node HYPER-V cluster connected to shared storage using Fibre-Channel protocol. The cluster works well, but one day we found that every 20-30 minute in the system event log on each node start to display error, warning and information events from MPIO source (Event IDs 2, 17,46):

********************************************************************************************

The description for Event ID 46 from source mpio cannot be found. Either the component that raises this event is not installed on your local computer or the installation is corrupted. You can install or repair the component on the local computer.

If the event originated on another computer, the display information had to be saved with the event.

The following information was included with the event:

\Device\MPIODisk15
77010001

********************************************************************************************

The description for Event ID 17 from source mpio cannot be found. Either the component that raises this event is not installed on your local computer or the installation is corrupted. You can install or repair the component on the local computer.

If the event originated on another computer, the display information had to be saved with the event.

The following information was included with the event:

\Device\MPIODisk13

********************************************************************************************

The description for Event ID 2 from source mpio cannot be found. Either the component that raises this event is not installed on your local computer or the installation is corrupted. You can install or repair the component on the local computer.

If the event originated on another computer, the display information had to be saved with the event.

The following information was included with the event:

\Device\MPIODisk14

*******************************************************************************************

Please give an advice how to fix these events. What should we check first: hyper-v or shared storage?

Thanks in advance,

Max

Dear reader,

We sometimes have a problem where our windows 2012 r2 RDS virtual servers, that reside on windows 2012r2 hyper-v hosts, loose their dynamic memory and only have their startup memory left to work with. Users start complaining that things are very slow etc.

If I check several screens (RDS Broker load balancing, hyper-v manager, cluster manager and the vm's task manager) it's clear that the vm only has its startup memory allocated. I'm not sure if this happens instantly or immidiatly after the nightly reboot. To resolve the problem we have to call all users on the vm where it happens and ask them to logoff (if they are even able to), and then we reboot the machine.

I have checked the logs from the machine where the VM resides on and the logs from the vm itself. But I cannot find anything. We also have alot of windows 2008r2 vm's with dynamivc memory, but none of those have ever had this problem.

Searched the internet, but so far it seems we are only.

Can anyone give me a lead to troubleshoot this?

Best regards,

Ruud Boersma

MCITP Enterprise administrator