Windows Server 2012 R2 - Hyper-V NIC Teaming Issue

Hi All,
I have cluster windows server 2012 R2 with hyper-v role installed. I have an issue with one of my windows 2012 R2 hyper-v host.
The virtual machine network adapter show status connected but it stop transmit data, so the vm that using that NIC cannot connect to external network.
The virtual machine network adapter using Teamed NIC, with this configuration:
Teaming Mode : Switch Independent
Load Balance Algorithm : Hyper-V Port
NIC Adapter : Broadcom 5720 Quad Port 1Gbps
I already using the latest NIC driver from broadcom.
I found a little trick for this issue by disable one of the teamed NIC, but it will happen again.
Anyone have the same issue with me, and any workaround for this issue?
Please Advise
Thanks,

Hi epenx,
Thanks for the information .
Best Regards,
Elton Ji
We
are trying to better understand customer views on social support experience, so your participation in this
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Hi Andrey ,
First , I would suggest you to keep the driver up-to-date for physical NIC .
Then check if the integration service was installed .
Allocate more Vcpu for that VM .
If the issue persists please try to disable "offload" for that VM :
http://blog.nicholasrogoff.com/2010/09/24/windows-2008-r2-hyper-vguests-vms-have-slow-performance-change-you-adapter-settings/
Best Regards
Elton JI
We
are trying to better understand customer views on social support experience, so your participation in this
interview project would be greatly appreciated if you have time.
Thanks for helping make community forums a great place.
Hi Elton!
I have already installed
the latest driver for NICs. From here:
Broadcom
The integration service was installed of course.
I added one additional virtual processor per VM. 2012 R2 works better. In 2018 R2 the task manager
freezes
when copying. Load is 100%..
Disabling"offload"
does not help..

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I might have misstated my situation. I have Windows Server 2012 outfitted with Hyper-V. I'm trying to virtualize a Windows 7 operating system.
I found a another W7 media disk that seems to bypass this problem.

DPM 2012 R2 - Windows Server 2012 R2 Hyper-v backup of Windows Server 2003 R2 - Non-retryable error 0x80070490

Hi,
I have a hyper-v host running Windows Server 2012 R2 Standard with Hyper-V on it, and on that host I got 5 virtual machines running and of those 5, 4 of those the DPM are able to backup but when DPM tries to backup a server running Windows Server 2003 R2
I get the following errors in the eventlog.
Log Name: Microsoft-Windows-Hyper-V-VMMS-Admin
Source: Microsoft-Windows-Hyper-V-VMMS
Date: 2013-11-28 10:46:58
Event ID: 18014
Task Category: None
Level: Error
Keywords:
User: SYSTEM
Computer: HYPERV05.domain.local
Description:
Checkpoint operation for 'SERVER01' was cancelled. (Virtual machine ID 5221623F-C80C-4B92-AD02-F545D118C859)
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="Microsoft-Windows-Hyper-V-VMMS" Guid="{6066F867-7CA1-4418-85FD-36E3F9C0600C}" />
<EventID>18014</EventID>
<Version>0</Version>
<Level>2</Level>
<Task>0</Task>
<Opcode>0</Opcode>
<Keywords>0x8000000000000000</Keywords>
<TimeCreated SystemTime="2013-11-28T09:46:58.365308800Z" />
<EventRecordID>411</EventRecordID>
<Correlation />
<Execution ProcessID="2116" ThreadID="4248" />
<Channel>Microsoft-Windows-Hyper-V-VMMS-Admin</Channel>
<Computer>HYPERV05.domain.local</Computer>
<Security UserID="S-1-5-18" />
</System>
<UserData>
<VmlEventLog xmlns:auto-ns2="http://schemas.microsoft.com/win/2004/08/events" xmlns="http://www.microsoft.com/Windows/Virtualization/Events">
<VmName>SERVER01</VmName>
<VmId>5221623F-C80C-4B92-AD02-F545D118C859</VmId>
</VmlEventLog>
</UserData>
</Event>
Log Name: Microsoft-Windows-Hyper-V-VMMS-Admin
Source: Microsoft-Windows-Hyper-V-VMMS
Date: 2013-11-28 10:46:58
Event ID: 18012
Task Category: None
Level: Error
Keywords:
User: SYSTEM
Computer: HYPERV05.domain.local
Description:
Checkpoint operation for 'SERVER01' failed. (Virtual machine ID 5221623F-C80C-4B92-AD02-F545D118C859)
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="Microsoft-Windows-Hyper-V-VMMS" Guid="{6066F867-7CA1-4418-85FD-36E3F9C0600C}" />
<EventID>18012</EventID>
<Version>0</Version>
<Level>2</Level>
<Task>0</Task>
<Opcode>0</Opcode>
<Keywords>0x8000000000000000</Keywords>
<TimeCreated SystemTime="2013-11-28T09:46:58.365308800Z" />
<EventRecordID>412</EventRecordID>
<Correlation />
<Execution ProcessID="2116" ThreadID="4248" />
<Channel>Microsoft-Windows-Hyper-V-VMMS-Admin</Channel>
<Computer>HYPERV05.domain.local</Computer>
<Security UserID="S-1-5-18" />
</System>
<UserData>
<VmlEventLog xmlns:auto-ns2="http://schemas.microsoft.com/win/2004/08/events" xmlns="http://www.microsoft.com/Windows/Virtualization/Events">
<VmName>SERVER01</VmName>
<VmId>5221623F-C80C-4B92-AD02-F545D118C859</VmId>
</VmlEventLog>
</UserData>
</Event>
Log Name: Microsoft-Windows-Hyper-V-VMMS-Admin
Source: Microsoft-Windows-Hyper-V-VMMS
Date: 2013-11-28 10:46:58
Event ID: 10150
Task Category: None
Level: Error
Keywords:
User: SYSTEM
Computer: HYPERV05.domain.local
Description:
Could not create backup checkpoint for virtual machine 'SERVER01': Element not found. (0x80070490). (Virtual machine ID 5221623F-C80C-4B92-AD02-F545D118C859)
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="Microsoft-Windows-Hyper-V-VMMS" Guid="{6066F867-7CA1-4418-85FD-36E3F9C0600C}" />
<EventID>10150</EventID>
<Version>0</Version>
<Level>2</Level>
<Task>0</Task>
<Opcode>0</Opcode>
<Keywords>0x8000000000000000</Keywords>
<TimeCreated SystemTime="2013-11-28T09:46:58.365308800Z" />
<EventRecordID>413</EventRecordID>
<Correlation />
<Execution ProcessID="2116" ThreadID="4280" />
<Channel>Microsoft-Windows-Hyper-V-VMMS-Admin</Channel>
<Computer>HYPERV05.domain.local</Computer>
<Security UserID="S-1-5-18" />
</System>
<UserData>
<VmlEventLog xmlns:auto-ns2="http://schemas.microsoft.com/win/2004/08/events" xmlns="http://www.microsoft.com/Windows/Virtualization/Events">
<VmName>SERVER01</VmName>
<VmId>5221623F-C80C-4B92-AD02-F545D118C859</VmId>
<Parameter0>%%2147943568</Parameter0>
<Parameter1>0x80070490</Parameter1>
</VmlEventLog>
</UserData>
</Event>
What I have done to try to troubleshoot this issue is:
Reinstalled DPM - No sucess
Restarted the Hyper-v Host - No sucess
I'm at the point where I am out of ideas and google hasn't given me much.
/Joseph

i have the same error.
"vssadmin list writers" shows last error unknown for all writers
disk space is sufficient
ntbackup of systemdrive and systemstate runs fine.
i installed KB940349 which fixes some vss related issues but the problem is still there.
any ideas?
Thanks.
When you have vssadmin reporting unknown error the only way to reset the vsswriters (as I understand it please correct me if I'm wrong :) ) is to restart the machine. The Fellenator is correct, make use that the vsswriter is working correctly since this
is the main function DPM is using when taking backup. He's also right in saying that it's outside the scope! Create a new thread on your error, then you will get much better responce!
/Joseph

Windows server 2012 Datacenter Hyper-V Cluster -- Failed to validate Operating System Installation Option?

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Hi JasonLiu2002,
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http://blogs.technet.com/b/askpfeplat/archive/2013/03/10/windows-server-2012-hyper-v-best-practices-in-easy-checklist-form.aspx
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I’m glad to be of help to you!
We
are trying to better understand customer views on social support experience, so your participation in this
interview project would be greatly appreciated if you have time.
Thanks for helping make community forums a great place.

Windows 7/8.0/8.1 NIC teaming issue

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As v-yamliu has mentioned, NIC teaming through the operating system is
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Hi,
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For detailed information about how to analyze a crash dump, please refer to the link below,
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Best Regards.
Steven Lee
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Windows Server 2012 R2 Hyper V on a SBS 2011 Domain replication failure

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Thank you again for your help.

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Hi, I'm currently experiencing a problem with some VMs in a Hyper-V 2012 R2 failover cluster using Fiber Channel adapters with Virtual SAN configured on the hyper-v hosts.
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https://social.technet.microsoft.com/Forums/windowsserver/en-US/baca348d-fb57-4d8f-978b-f1e7282f89a1/synthetic-fibrechannel-port-failed-to-start-reserving-resources-with-error-insufficient-system?forum=winserverhyperv
http://social.technet.microsoft.com/wiki/contents/articles/18698.hyper-v-virtual-fibre-channel-troubleshooting-guide.aspx
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The Virtual SAN is configured on every hyper-v host node in the cluster. And every VM has 2 fiber channel adapters configured.
All the World Wide Names are configured both on the FC Switch as well as the FC SAN.
All the drivers for the FC Adapter in the Hyper-V Hosts have been updated to their latest versions.
The strange thing is that the issue is not affecting all of the VMs, some of the VMs with FC adapters configured are live migrating just fine, others are getting this error.
Quick migration works without problems.
We even tried removing and creating new FC Adapters on a VM with problems, we had to configure the switch and SAN with the new WWN names and all, but ended up having the same problem.
At first we thought is was related to the hosts, but since some VMs do work live migrating with FC adapters we tried migrating them on every host, everything worked well.
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Any ideas on how to solve this is deeply appreciated.
Thank you!
Eduardo Rojas

Hi Eduardo,
How are things going ?
Best Regards
Elton Ji
We
are trying to better understand customer views on social support experience, so your participation in this
interview project would be greatly appreciated if you have time.
Thanks for helping make community forums a great place.

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1 Windows Server 2008 Standard Exchange Server.
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we see speeds up to 400 Mbit/s of combined read/write for instance during file repair
Our Problem
Our problem is that for some reason all of the VMs stops responding or responds very slowly and you can for instance not send CTRL-ALT-DEL to a VM in the Hyper-V console, or for instance start task manager when already logged in.
Symptoms (i.e. this happens, or does not happen, at the same time)
I we look at resource monitor on the host then we see that there is often an extensive read from a VHDX of one of the VMs (40-60 Mbyte/s) and a combined write speed to many files in \HarddiskVolume5\System Volume Information\{<someguid and no file extension>}.
See iamge below.
The combined network speed to the iSCSI SAN is about 500-600 Mbit/s.
When this happens it is usually during and after a VSS ShadowCopy backup, but has also happens during hours where no backup should be running (i.e. during daytime when the backup has finished hours ago according to the log files). There is however
not that extensive writes to the backup file that is created on an external hard drive and this does not seem to happen during all backups (we have manually checked a few times, but it is hard to say since this error does not seem leave any traces in event
viewer).
We cannot find any indication that the VMs themself detect any problem and we see no increase of errors (for example storage related errors) in the eventlog inside the VMs.
The QNAP uses about 50% processing Power on all cores.
We see no dropped packets on the switch.
(I have split the image to save horizontal space).
Unable to recreate the problem / find definitive trigger
We have not succeeded in recreating the problem manually by, for instance, running chkdsk or defrag in VM and Hosts, copy and remove large files to VMs, running CPU and Disk intensive operations inside a VM (for instance scan and repair a database file).
Questions
Why does all VMs stop responding and why is there such intensive Read/Writes to the iSCSI SAN?
Could it be anything in our setup that cannot handle all the read/write requests? For instance the iSCSI SAN, the hosts, etc?
What can we do about this? Should we use MultiPath IO instead of NIC teaming to the SAN, limit bandwith to the SAN, etc?

Hi,
> All VMs are using dynamic disks (as recommended by Microsoft).
If this is a testing environment, it’s okay, but if this a production environment, it’s not recommended. Fixed VHDs are recommended for production instead of dynamically expanding or differencing VHDs.
Hyper-V: Dynamic virtual hard disks are not recommended for virtual machines that run server workloads in a production environment
http://technet.microsoft.com/en-us/library/ee941151(v=WS.10).aspx
> This is the primary host and normaly all VMs run on this host.
According to your posting, we know that you have Cluster Shared Volumes in the Hyper-V cluster, but why not distribute your VMs into two Hyper-V hosts.
Use Cluster Shared Volumes in a Windows Server 2012 Failover Cluster
http://technet.microsoft.com/en-us/library/jj612868.aspx
> 2 teamed NIC dedicated to iSCSI storage.
Use Microsoft MultiPath IO (MPIO) to manage multiple paths to iSCSI storage. Microsoft does not support teaming on network adapters that are used to connect to iSCSI-based storage devices. (At least it’s not supported until Windows Server 2008 R2. Although
Windows Server 2012 has built-in network teaming feature, I don’t article which declare that Windows Server 2012 network teaming support iSCSI connection)
Understanding Requirements for Failover Clusters
http://technet.microsoft.com/en-us/library/cc771404.aspx
> I have seen using MPIO suggests using different subnets, is this a requirement for using MPIO
> or is this just a way to make sure that you do not run out of IP adressess?
What I found is: if it is possible, isolate the iSCSI and data networks that reside on the same switch infrastructure through the use of VLANs and separate subnets. Redundant network paths from the server to the storage system via MPIO will maximize availability
and performance. Of course you can set these two NICs in separate subnets, but I don’t think it is necessary.
> Why should it be better to not have dedicated wireing for iSCSI and Management?
It is recommended that the iSCSI SAN network be separated (logically or physically) from the data network workloads. This ‘best practice’ network configuration optimizes performance and reliability.
Check that and modify cluster configuration, monitor it and give us feedback for further troubleshooting.
For more information please refer to following MS articles:
Volume Shadow Copy Service
http://technet.microsoft.com/en-us/library/ee923636(WS.10).aspx
Support for Multipath I/O (MPIO)
http://technet.microsoft.com/en-us/library/cc770294.aspx
Deployments and Tests in an iSCSI SAN
http://technet.microsoft.com/en-US/library/bb649502(v=SQL.90).aspx
Hope this helps!
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Windows Server 2012 Hyper-V network latencies

Hi All,
I have an issue with our Windows Server 2012 Hyper-V hosts that I can't seem to figure out. Situation:
2 x Dell PowerEdge R815 servers with AMD opteron 6376 16 core CPU's and 128 GB RAM running Windows Server 2012 with Hyper-V.
2 virtual machines running on the same physical host and connected to the same virtual switch show high TCP connection latencies. One virtual machines runs a SQL Server 2012 database instance and a Dynamics AX 2012 R2 instance. The other machine a
SharePoint 2013 instance and the AX client. We see latencies of 20ms and higher on most of the TCP connections that are made from the sharepoint machine to the sql server machine.
At first I thought it might have something to do with the physical NIC's. It turned out that VMQ wasn't correctly supported by the firmware of the Broadcom BCM5709c cards. By default this setting is enabled. Turning off the VMQ setting somewhat improved
the situation but the latencies are still at 8ms and higher.
What I don't understand is what influence enabling/disabling VMQ should have on network performance. As I understand it now virtual machines connected to the same virtual switch bypass the physical altogether. Another point is that VMQ should actually improve
performance, not decrease it.
Another question I have is about the various tcp offloading settings on the physical NIC's. After installing the new firmware and drivers from Dell most of these settings are set to disabled. The documents I have been able to find talk about Windows Server
2008, any thought how these settings relate to Windows Server 2012 and whether they should be enabled?
Thanks in advance for your time and thoughts
Kind regards,
Dennes Schuitema

Hi Denes,
Please try to update your BroadCom NIC driver version ,the newest version should be 7.8.51
For details please refer to following link :
http://www.broadcom.com/support/ethernet_nic/netxtremeii.php
Best Regards
Elton Ji
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