Hello
I have followed the "usual" way to build a pooled VDI desktop using Win7 or Win8 with success, but it fails when I use an image of Win Server 2012 as VM instead.
Am I overlooking something? Should I need to prepare the image in a different way? (Sysprep differently?)
Thanks
Hello,
I have a problem with VM replication. We have two Hyper-V 2012 R2 (fully patched) hosts (let's call them HV1 and HV2) with different VMs on each. There is one VM on HV1 (call it VM1) and two VMs on HV2 (call them VM2 and VM3). Each host is set to replicate VMs to the internal backup drive on the other host. The VMs on HV2 are replicating to HV1 perfectly. VM1 on HV1 is not replicating to HV2 correctly. I traced its errors to a full drive on HV2 - it appears there were two incomplete copies of VM1. Assuming I could just purge the incomplete files I removed the replication configuration from VM1 and simply deleted the contents of the "Hyper-V Replica" folder on HV2. I then recreated replication of VM1 from scratch and pointed it to HV2, but now it immediately fails with the following error:
Initial replication could not be started
Replication was enabled successfully. However, initial replication could not be started. Correct the error and try again. You can also choose an alternative mode for initial replication and try again.
Hyper-V failed to start replication for virtual machine.
Replication operation for virtual machine 'VM1' failed. (Virtual machine ID XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX)
Hyper-V failed to start replication for virtual machine 'VM1': The system cannot find the file specified. (0x80070002). Virtual machine ID XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX)
Replication operation for virtual machine 'VM1' failed: the system cannot find the file specified. (0x80070002). (Virtual machine ID XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX) (Primary server: 'HV1.mydomain.com', Replica server: 'HV2.mydomain.com')
Now I'm assuming there are some expected links to the original replica that were lost when I deleted the original replica folders and their contents. What I'd like to know is, how can I remove all references to these links and 'reset' the VM as though it has never had replication enabled and start from scratch?
Thanks for your time,
Trevor
Hello,
We recently upgraded a server that's been in production for three years - it was running Server 2003. It's now running Hyper-V Server 2012 R2 with a Server 2012 R2 VM, but we're seeing degraded network performance - it has gigabit ethernet yet we're only seeing about 120mbps sustainable from it, yet it was hitting over 600mbps as a baremetal server.
Now the onboard network controller isn't fully supported in Server 2012 R2 - there are Microsoft inbuilt drivers, but Intel can't support it due to hardware limitations (it doesn't meet WHQL minimums for 2012 R2). So we've upgraded to an Intel i350-T2 which gives us both native support in '12R2 and SR-IOV (or so we thought) - SR-IOV is apparently our best option to get greater performance from network devices to the VM.
Unfortunately, however, SR-IOV isn't working - Get-NetAdapterSriov tells us "NoOSCSupport". Apparently there is an issue with OSC Handoff, but this seems to be an essentially undocumented issue as there is hardly any information available about it beyond the initial TechNet article - http://technet.microsoft.com/en-us/library/jj130915.aspx
I have attempted to speak to technical support from the mainboard manufacturer and they said if the feature isn't in their documentation then it doesn't exist.
So I'm trying to determine two things - if there is a way around the OSC Handoff limitation so we can enable SR-IOV or if that's simply not possible on this hardware (Asus Z8PE-D12X), and/or what other options we have to improve network performance to the VM?
Thanks for your help,
Trevor
We have Hyper-V host (Windows Server 2012 R2) running a Small Business Server 2011 VM.
When we attempt to run the Hyper-V backup in Windows Server Backup, the SBS2011 always shows as 'offline'. When we run the backup SBS2011 VM goes into a saved state whilst the VSS is taken (screenshot attached).
I'm also seeing this behaviour on an identical Hyper-V host running SBS2011. All other VM's (Windows Server 2008R2, Windows 7, Windows 8, etc.) all run fine.
Microsoft support are looking into this now and they have already established there is no obvious cause and they are now investigating further.
My question is this....
Is anyone running a SBS2011VM on a Windows Server 2012 R2 host? If so, does Windows server backup run without putting the VM into a saved state?
I just want to check that the problem isn't something to do with the SBS2011/Server 2012 R2 combination.
Many thanks.
Afternoon Chaps,
I have a problem with my physical Server 2012 R2 2node HyperV Cluster. I have created a VM guest cluster using shared .VHDX files that reside on the physical cluster's CSV files.
Everything is working fine, everything is online and fails over when needed as expected. However once I started performance testing I realised that unless the Guest Cluster Node VM was running on the same physical hardware node that owned the CSV the shared VHDX resides on - any IO to that shared VHDX sends it via redirected-IO across the ClusterNetwork (lowest metric network) to whichever physical hardware node owns the CSV, then that node sends the IO to the SAN using direct-IO.
If the Guest Cluster Node VM *is* running on the same physical hardware node that owns the CSV the shared VHDX resides on - then the IO is sent normally using Direct-IO.
The issue is that the difference between my DirectIO (12GB SAS) and redirected IO (1GB Network) is crippling my performance. Has anyone else seen this? I can't find *anything* in any articles or TechNet suggesting this is expected behaviour and I really need to resolve it :(
NOTE - If anyone can test this on their own cluster/lab - you can spin up a test VM (Server 2012 or 2012R2) with two additional SCSI disks, mark one of them as a shared VHDX (you don't need to build a guest cluster, just ticking the box has the same effect) and then test by copying a large file onto each (one drive at a time) monitoring the copy speed and your physical cluster's ClusterLAN/LiveMigrationLAN (whichever is set to handle CSV redirected IO traffic) to see the traffic go over the network. If it matches what I am seeing then the normal SCSI .VHDX will send it via DirectIO regardless of what physical hardware node owns the CSV, while the Shared SCSI .VHDX will use RedirectedIO if the CSV owner is not the same hardware node that is running the VM.
There is no indication in the UI that this is happening and no information/warning/errors are logged. On top of that it does not even show the physical cluster's CSV in redirected mode - it is redirecting at a file level on the CSV (the shared .VHDX)
If anyone has any thoughts on how to correct this - it would be much appreciated as I really need to resolve this asap :)
Regards
Joe
Hi All,
we have a setup with a single server, hyperv 2012 r2 server core plus 3 Windows 2012 vms.
I have been looking for a suitable backup solution and found names such as Acronis, Symantec Backupexec, MS DPM, Veeam, Altaro, Starwind, Backupassist and others.
But despite they all offer VM backup, I just want to know one software that will backup the host operating system (hypervisor) , the VMs, the VMs configurations, etc, etc..
I am finding hard to find one software that does the lot.
Does anyone know of any good ones?
Thanks and regards
Ipnotech
Replication was created successfully from server HV1 to HV2. Both HV servers are domain members, with valid DNS. I can add HV2 to the Hyper-V management console on HV1, and vice versa, so I can manage both servers from either console. (i.e.,
they talk nicely to each other)
When I run a Planned Failover test, the message shown below pops up saying "Hyper-V failed to enable reverse replication", along with additional info.
Before I needlessly get too wordy in this post, any ideas on what the problem is?
NOTE: NO firewall is running on either machine.
Windows 8.1 Pro, ASUS H81M-E, i3-4130, 8GB memory (note: not yet activated)
Upgraded Bios to 0808 with ASUS i3-4xxx updater.
Bios shows VT-x enabled, HT enabled, x64 enabled, EIST enabled
When attempting to add Hyper-v windows feature, error msg:
"Hyper-V cannot be installed; Virtualization support is disable in firmware"
Anyne has suggestions?
Tom Fleischmann
Why has the amount of installed RAM on exch.servers has changed from 9858 MBytes to 9936 MBytes. What is the actual cause for this, we have 2 servers (AD(4GB-RAM) & Exchange(8GB-RAM) on a Hyper-V virtual server .
Sumanth.S Exchange Admin
Hello Guys
can anyone tell if Client Hyper-V of windows 8 is considered a bare-metal or hosted hypervisor after installing it.
Thanks
How to disable the server from the the administrator log on access
Hello Everyone,
Recently we purchased a brand-new IBM server and installed Windows 2012 R2 Datacentre, SQL server 2012, TFS server 2013, etc.
We would like to generate the hyper-v (VHD) file which will the replica of the above OS and will run as guest OS from the above server. Can anybody advise me how to develop the hyper-v, VHD file of Windows 2012 R2 Datacentre host OS?
If in case I required to do the all installation again on a new Hyper-V machine then can I generate the C:\ and D:\ partitions same as what I did on host operating system?
Any help would be much appreciated.
Thanks, Ankit Shah
Hi all!
I try to configure hyper-v 2012R2 lab enviroment on VMWare WKS 10.0, so, when a create Nic Team and configure external virtual switch with Team but VM Guest not have network connectivity.
Douglas Filipe http://douglasfilipe.wordpress.com
I have been trying to enable Replication on WSUS VM and having some issues.
As soon as I enable it.. the status says "Enabling Replication..." then changes to Merge in Progress and fails.
It thinks there is a file existing somewhere. I went to the Replica server and removed the Replication then delete the VM.
I then went on Replica server and checked the folders/files for 2CBDACFA-0064-41F8-BBFD-90BAEC8CA0E4.
Hyper-V failed to generate initial replica for 'WSUS': Cannot create a file when that file already exists. (0x800700B7). (Virtual Machine ID 2CBDACFA-0064-41F8-BBFD-90BAEC8CA0E4)
After carrying out all the steps above I then try and Enable Replication... as soon as it enables it then tries to Merge in Progress and fails with the error message again.
Anyone have any ideas where to turn?
Thanks,
Adam
Hello Everyone,
I would like to a generate the VHDx file on our current server where Windows 2012 R2 OS is installed. I would like to install all software that were installed on server OS (host OS) with as is partitions, drives etc. I never did it before hence, would like to know the steps to create a fresh empty VHDx file then do the partitions on that and install the all software one by one. Are there any other steps that I need to keep in mind during this exercise?
Also, would like to periodically convert the VHDx file into VHD file so that, if in case any hardware failure occurs I could run the same VHDx setup (Hyper-V machine) in Oracle virtual box as a standby server.
Any help would be much appreciated.
Thanks, Ankit Shah
I have noticed in Hyper-V 2012R2 when migrating a VM around it leaves behind an empty folder structure. Is there a way cleaning this up automatically after the successful migration?
For instance,
VM located at C:\clusterstorage\FOLDER_A\VM
Moved to C:\clusterstorage\FOLDER_B\VM
But.... The FOLDER_A\VM still exists after a successful migration. This should be deleted to prevent confusion and allow a VM if migrated back to FOLDER_A to reside in a folder called VM and not VM_1.
I have a vm, "A" that presents on the network as such, but also presents as "B." When I manage "B" it actually takes me to "A" and as this was setup up by someone else:
I cannot figure why this would be done
I cannot figure how to undo it
I see no point in it and want to clean this up unless there is some advantage to it and an important feature of hyper-v with which I am unfamiliar.
Any ideas?
Hello, guys!
We have our infra on rented dedicated servers at Canadian services provider.
We used to rent and pay their MS licenses (Win2008R2 Ent) on these servers.
Now we want to use Hyper-V Server 2012 R2 hypervisor on our dedicated servers, because of the smaller footprint, less attck surface, less updates needed to install and no cost.
We installed 5 hosts with Hyper-V Server 2012 R2 hypervisor and now we want to move the rest to it. But their engineer states that "
Unfortunately, if you are going to use Microsoft Server on those servers, I'll have to add the licence as we have an SPLA agreement with Microsoft.
"
Can you please help to clarify if we're allowed to use this hypervisor or not?
Thank you
Hi,
Does anybody have any guidelines (even if it's just a rough MB/sec) on how long a VHD to VHDX conversion would take? I have a VHD which is 1.8TB that I need to convert to a VHDX so I can expand it further, but I wanted to get an idea of how long the process is likely to take.
