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Access Device Manager in Hyper-V 2012

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When I try accessing Hyper-V Server 2012's Device Manager via MMC I get "Make Sure that this computer is on the network, has remote administration enabled, and is running the "Plug and Play" and "Remote registry" services.

The Error Was: "The machine selected for remote communication is not available at this time.

I disabled the Hyper-V Firewall and followed the steps outlined here for "Allow remote access to the Plug and Play interface":
http://mikefrobbins.com/2010/12/02/enabling-remote-access-to-device-manager-on-server-core/

Any ideas?

The Hyper-V Manager works as-well-as the Policy Editor, just not Device Manager.


Hyper-V Failover Cluster "Failed to attach disk" error

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Hi,

We have had a Hyper-V failover cluster running for some time now and works well. I ran the validate-configuration tool after some minor failover problems (slow migration and servers shutting down if a node is lost instead of live migrating to another node) and the Storage validation fails with the following errors:

Failed to attach disk with ID fcfbe40e from node blade12.domain.local (error Access is denied.
). Please retry after restarting blade12.domain.local.

Failed to attach disk with ID fcfbe40e from node blade12.domain.local (error Access is denied.
). Please retry after restarting blade12.domain.local.

There is blade10, blade11, blade12, blade13 and blade14 in the cluster. All nodes can handle vitual machines and will live migration manually without problems. I suspect there is something fundementally wrong with the configuration of either the FC or the SAN.

Any Ideas?

Regards,

James

Access denied when starting VM.

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I checked permissions on the VHD and I set them very loosely, everyone has full control, system has full control, domain users have full control. This is Windows 8 Enterprise Hyper-V.


Devon Quick

Forum FAQ: Error 0x80070005 when exporting Hyper-V VMs over the Network

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Symptom

 

You use Hyper-V on a computer that is running Windows Server 2008 or Windows Server 2008 R2.

  • In Hyper-V Manager, you try to try to export a virtual machine to a network share.
  • You have the full control permissions on the network share.

 

In this scenario the export may fail with an error that resembles the following:

 

An error occurred while attempting to export the virtual machine.

Failed to copy file during export.

Failed to copy file from ‘<source path of VHD file>’ to ‘<network share>’: General access denied error (0x80070005)

 

Cause

 

When you export a virtual machine in Hyper-V manager, it is the System account of the Hyper-V host that executes the export. This problem occurs because the Hyper-V host does not have permission on the network share

 

Resolution

 

Ensure the permissions allow the Computer account of the Hyper-V host performing the Export to update the shared folder.

Note: While following steps are specific to 2008, the idea is the same for updating the share and NTFS permissions if the share is hosted on other versions of Windows. You can adjust the steps accordingly.

 

Updating the NTFS level permissions:

 

1.  On the destination server, Right-click on the shared folder and select Properties. 
2.  Select the Security tab. 
3.  Click Edit button and click the Add button in the permissions dialog box. 
4.  Click Oject Types and select Computers if not already done and click OK.
5.  In the dialog "Enter the object names to select" provide the name of Hyper-V host machine and click Check Names.
6.  With the Hyper-V host machine name select, click Allow by "Full control" and click OK.

 

Updating the share level permissions:

 

1.  On the destination server, Right-click on the shared folder and select Properties. 
2.  Select the Sharing tab. 
3.  Click Advanced Sharing...
4.  On the Advanced Sharing dialog, click Permissions  and then Add.

5. Click Oject Types and select Computers if not already done and click OK.
6.  In the dialog "Enter the object names to select" provide the name of Hyper-V host machine and click
Check Names.
7.  With the Hyper-V host machine name select, click Allow by "Full control" and click OK.

 

Applies to

 

Windows Server 2008

Hyper-V Role installation fails without reason (Windows Server 2012)

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Hi,

We are building a new Hyper-V infratructure, based on Windows Server 2012 Datacanter and multiple HP ML350p Gen8 servers. We've been deploying lost of Server 2012 Hyper-V projects lately (all HP G6 servers), without any problems at all, but this project is a real pain:

We are unable to install the Hyper-V role on any server, at all! There's four of them! All hosts are HP ML350p Gen8, Server 2012 Datacenter, latest updates/firmware/drivers (HP SPP 2012.10.0). BIOS settings are correct/verified for virtualization.
We simply install Hyper-V via Server Manager without any modifications (not selecting any network adapters either, this is all done later using Virtual Network ).

The installation reboots the server, and during boot, the installation fails. After reboot, the Server Manager sais there's been an unexpected error, and have a nice day.

I've been digging through the CBS.log file, and there a very small ERROR portion during installation:

..

2012-11-22 23:13:14, Info                  CSI    0000000c Begin executing advanced installer phase 32 (0x00000020) index 65 (0x0000000000000041) (sequence 98)
    Old component: [l:0]""
    New component: [ml:298{149},l:296{148}]"Microsoft-Hyper-V-VStack, Culture=neutral, Version=6.2.9200.16384, PublicKeyToken=31bf3856ad364e35, ProcessorArchitecture=amd64, versionScope=NonSxS"
    Install mode: install
    Installer ID: {9f4ec79f-3a97-4772-b635-2899468900a2}
    Installer name: [3]"Mof"
2012-11-22 23:13:14, Info                  CSI    0000000d Performing 1 operations; 1 are not lock/unlock and follow:
  (0)  LockComponentPath (10): flags: 0 comp: {l:16 b:6cc85491fec8cd01090000009001a401} pathid: {l:16 b:6cc85491fec8cd010a0000009001a401} path: [l:206{103}]"\SystemRoot\WinSxS\amd64_microsoft-hyper-v-vstack_31bf3856ad364e35_6.2.9200.16384_none_bd871a667de19e11" pid: 190 starttime: 129980959854649778 (0x01cdc8fe8bb361b2)
2012-11-22 23:13:15, Info                  CBS    Progress: UI message updated. Operation type: Foundation. Stage: 1 out of 1. Percent progress: 38.
2012-11-22 23:13:17, Error                CSI    00000001@2012/11/22:22:13:17.733 (F) Logged @2012/11/22:22:13:15.318 : [ml:140{70},l:138{69}]"MOF (install online) $(runtime.System32)\WindowsVirtualization.V2.mof"
[gle=0x80004005]
2012-11-22 23:13:17, Error                CSI    00000002@2012/11/22:22:13:17.733 (F) CMIADAPTER: Inner Error Message from AI HRESULT = 80041002 [Error,Facility=FACILITY_ITF,Code=4098 (0x1002)]
 [
[150]"An error occurred while creating object 18 defined on lines 35 - 37:

0X80041002 Class, instance, or property 'CIM_RegisteredProfile' was not found.

"
]
[gle=0x80004005]
2012-11-22 23:13:17, Error                CSI    00000003@2012/11/22:22:13:17.733 (F) CMIADAPTER: AI failed. HRESULT = 80041002 [Error,Facility=FACILITY_ITF,Code=4098 (0x1002)]
Element:
[104]"<mof xmlns="urn:schemas-microsoft-com:asm.v3" name="$(runtime.System32)\WindowsVirtualization.V2.mof" />"
[gle=0x80004005]
2012-11-22 23:13:17, Error                CSI    00000004@2012/11/22:22:13:17.733 (F) CMIADAPTER: Exiting with HRESULT code = 80041002 [Error,Facility=FACILITY_ITF,Code=4098 (0x1002)].
[gle=0x80004005]
2012-11-22 23:13:17, Info                  CSI    0000000e Performing 1 operations; 1 are not lock/unlock and follow:
  (0)  LockComponentPath (10): flags: 0 comp: {l:16 b:7a570393fec8cd010d0000009001a401} pathid: {l:16 b:7a570393fec8cd010e0000009001a401} path: [l:234{117}]"\SystemRoot\WinSxS\x86_microsoft.windows.s..ation.badcomponents_31bf3856ad364e35_6.2.9200.16384_none_353ccb4c94858655" pid: 190 starttime: 129980959854649778 (0x01cdc8fe8bb361b2)
2012-11-22 23:13:17, Error      [0x018020] CSI    0000000f (F) Failed execution of queue item Installer: Mof ({9f4ec79f-3a97-4772-b635-2899468900a2}) with HRESULT 80041002 [Error,Facility=FACILITY_ITF,Code=4098 (0x1002)]. Failure will not be ignored: A rollback will be initiated after all the operations in the installer queue are completed; installer is reliable (2)[gle=0x80004005]
2012-11-22 23:13:17, Info                  CBS    Added C:\Windows\Logs\CBS\CBS.log to WER report.
2012-11-22 23:13:17, Info                  CBS    Added C:\Windows\Logs\CBS\CbsPersist_20121122020104.cab to WER report.
2012-11-22 23:13:17, Info                  CBS    Added C:\Windows\Logs\CBS\CbsPersist_20121121151252.cab to WER report.
2012-11-22 23:13:17, Info                  CBS    Added C:\Windows\Logs\CBS\CbsPersist_20121121150112.cab to WER report.
2012-11-22 23:13:17, Info                  CBS    Added C:\Windows\Logs\CBS\CbsPersist_20121108153942.cab to WER report.
2012-11-22 23:13:17, Info                  CBS    Added C:\Windows\Logs\CBS\CbsPersist_20121108130606.cab to WER report.
2012-11-22 23:13:17, Info                  CBS    Could not get active session for current session file logging [HRESULT = 0x80004003 - E_POINTER]
2012-11-22 23:13:17, Info                  CBS    Not able to add pending.xml.bad to Windows Error Report. [HRESULT = 0x80070002 - ERROR_FILE_NOT_FOUND]
2012-11-22 23:13:17, Info                  CSI    00000010 Creating NT transaction (seq 1), objectname [6]"(null)"
2012-11-22 23:13:17, Info                  CSI    00000011 Created NT transaction (seq 1) result 0x00000000, handle @0x404
2012-11-22 23:13:17, Info                  CSI    00000012@2012/11/22:22:13:17.920 Beginning NT transaction commit...
2012-11-22 23:13:17, Info                  CSI    00000013@2012/11/22:22:13:17.920 CSI perf trace:
CSIPERF:TXCOMMIT;12997
2012-11-22 23:13:17, Info                  CSI    00000014@2012/11/22:22:13:17.920 CSI Advanced installer perf trace:
CSIPERF:AIDONE;{9f4ec79f-3a97-4772-b635-2899468900a2};Microsoft-Hyper-V-VStack, Version = 6.2.9200.16384, pA = PROCESSOR_ARCHITECTURE_AMD64 (9), Culture neutral, VersionScope = 1 nonSxS, PublicKeyToken = {l:8 b:31bf3856ad364e35}, Type neutral, TypeName neutral, PublicKey neutral;3529599us
2012-11-22 23:13:17, Info                  CSI    00000015 End executing advanced installer (sequence 98)
    Completion status: HRESULT_FROM_WIN32(ERROR_ADVANCED_INSTALLER_FAILED

..

It's hard to find any information on this subject. The CBS log contains 4 MB of information, but only this portion contains Errors. I really hope somebody can help us out, because all we need is Hyper-V... and it refuses to install on any machine.




fourth node in Hyper-v cluster unable to create VHDs

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Hello, 

I have added a fourth node to our hyper-v failover cluster and I am unable to live migrate or create new VMs in SCVMM 2008 R2 SP1, Failover Cluster Manager or Hyper-v manager.

The new node has identical NIC and hardware configuration and the only difference is this is SP1 where the others are not.

I have:

  • Installed Dell SAN drivers (not management utils of any kind) 
  • Enable VT and DEP in the BIOS and power cycled fully
  • Configured iSCSI multipath to SAN
  • added the node to the host group (presenting the LUNs)
  • Added the node to the cluster

I can confirm the CSVs are readable and writeable from the new node, however, I can't create a new VM or live migrate an existing one to it. Here are the details of each scenario:

Creating a new VM

in hyper-v manager, it fails with the error "A virtual disk support provider for the specified file was not found". and no changes are made.

In SCVMM, it fails at 82% after a few seconds and gives us some more information:

 

Error (12700)

VMM cannot complete the Hyper-V operation on the  <host> server because of the error: 'The system failed to create 'C:\ClusterStorage\Volume2\Testagain\Testagain_disk_1.vhd'. Error Code: A virtual disk support provider for the specified file was not found. 

 (A virtual disk support provider for the specified file was not found (0xC03A0014)) 

Recommended Action

Resolve the issue in Hyper-V and then try the operation again.

 

The folders for the VM are created, it is bootable (in hyper-v manager), but obviously no disks are present

Live Migrating a VM

This fails at 99%, I assume at the point the dirty blocks of memory are trying to be moved, with the following error:

 

Error (10698)

Virtual machine <VM> could not be live migrated to virtual machine host <host> using this cluster configuration. 

 (Unspecified error (0x80004005)) 

 

Recommended Action

Check the cluster configuration and then try the operation again.

Performing the same operation in failover cluster manager just says migration failed.

 

Here are the steps I've performed while troubleshooting:

  • Changed the relevant FSDepends dword to 0
  • configured the quorum disk in FCM
  • changed the "network for live migration" in FCM
  • Evicted the node from the cluster, pulled off and reconfigured all the iscsi stuff, and re-added it to the cluster
  • Services running on old and new hosts are identical

I am at a loss as to what I've missed setting this up, and any help would be appreciated

Thanks

Ben

 

USB Guests OS's

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Lingering problem exists -

Any updates on Guests with access too?

* biometric devices

* USB (pass though)


Hyper-V Cluster with HP Proliant DL360 & HP D2700 (Storage DAS)

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Hello
I have planned to make a cluster highly available Hyper-V, using the following hardware:
02 nodes: HP Proliant DL360 G7 with 02 disks RAID 1 for OS, 4 gigabit NIC, 144GB RAM.
01 DAS storage HP D2700  connected to the node type using 6Gbps mini-SAS cable, (12) 600GB 10K RPM Hard Disks,

The virtual machine load bear nodes is:
Domain Controllers, File Servers, DHCP Server, WSUS Server, System Center 2012 (OM, DPM, SM, CM, VMM), SQL Server 2k8 for systemcenter. Apache Tomcat Web & Windows Sever over 2K8 R2 Web Edition, Sharepoint, ADFS.
There are a load of users in the following two years from about 1500.
Solutions such as email and enterprise systems will be in the cloud (Office365)
Hard disks would have to use 10K RPM.
As you will see are mostly Microsoft products and Windows 2008 R2.

I wonder if anyone has had experience with HP hardware and if you should use a DAS storage instead of an iSCSI SAN.

Thanks a lot

PD: Sorry for my bad english


Installing Windows Server 2008 Hyper-V on new SSD

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Hi,

I want to install Windows 2008 R2 Hyper-V on a new SSD so I can install and run the VS2012ALM VM. I have a DVD that I made from the .iso for my Windows 2008 R2 Hyper-V with SP1 but when I try to boot from the DVD I get the single line error "Operating System not found". Is there something that I need to do before I install the Windows 2008 R2 Hyper-V? I'm probably just missing something. I know this worked fine when I installed my Windows 7 initially. Any advise would be greatly appreciated. Shouldn't I be able to boot/install from this disk?

regard,

Bill44077


William Campbell

CSV Volume disk signature changed.

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Hello everyone

I encountered this on one of our Hyper-V clusters a few days ago. We had a node failure due to (root cause uncertain, the logs are inconclusive) either network or FC-HBA failure. we lost contact with all machines which resided on the disks that the failing node owned.

the disks were moved to other nodes and machines were brought back online. but oddly enough there appeared "duplicates" of machines across some nodes, this was fixed. and the failing node was taken offline and we did a driver/firmware update and placed the node back into the cluster.

a few days later we noticed that one of the disks were "online, redirected". and we were unable to bring it back to online direct access mode. so migrated it to another node and rebooted the node. Now the volume was online BUT it was not able to find the disk, because the disk signature had changed!? fortunately there were no critical servers on the disk, but were not able to get it back online.

I've come across some "old" KB's and i wonder if its still possible for them to apply(it says win2000 and 2003)? because it explains what I have experienced.

http://support.microsoft.com/kb/293778

http://support.microsoft.com/kb/280425

Any other suggestions of what we can do to bring the disk back online without re-initializing the disk?

thanks for your time.

CentOS based linux VM running on Hyper-v : Checking root filesystem fails when kernel switches having old PV(para virtualised driver based on 2.6.32 linux kernel) to new PV(which is equivalent to linux integration component 3.4)

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hi all,

I am running a CentOS base VM on top of Hyper-V server. I upgraded PV drivers of Hyper-V in linux kernel 2.6.32 in order to support Windows Server 2012, then i am hitting below issue on Windows Server 2008 when kernel switches from old PV(which is 2.6.32 based) to new PV(which is equivalent to linux integration component 3.4).i am hitting following filesystem check error messages :
******************************************************
Setting hostname hostname:
Checking root filesystem
fsck.ext3/dev/hda2:
The superblock could not be read or does not describe correct ext2 filesystem. If the device is valid and it really contains an ext2 filesystem(and not swap or ufs or something else),then the superblock is corrupt, and you might try running e2fsck with an alternate superblock:
e2fsck -b 8193 <device>

: No such file or directory while trying to open /dev/hda2

*** An error occurred during the filesystem check.
*** Dropping you to a shell; the system will reboot
*** When you leave the shell.

*****************************************************
Also, when I go to the repair filesystem mode. I found out the strange behaviour when i ran those command :

****************************************
(Repair filesytem) 1 # mount
/dev/hda2 on / type ext3 (rw)
proc on /proc type proc (rw)

(Repair filesystem) 1# cat /etc/mtab
/dev/hda2 /ext3 rw 0 0
proc /proc proc rw 0 0

(Repair filesystem) 1# df
Filesystem 1K-blocks used Available Use% Mountedon
/dev/hda2 4%

******************************************
I think for all above command there should be /dev/sda2 instead of /dev/hda2.

Also my fstab , and fdisk -l looks like ok for me.
*******************************************
(Repair filesystem) 1# cat /etc/fstab
LABEL=/ / ext3 defaults 1 1
LABEL=/boot /boot ext3 defaults 1 2
devpts /dev/pts devpts gid=5,mode=620 0 0
tmpfs /dev/shm tmpfs defaults 0 0
proc /proc proc defaults 0 0
sysfs /sys sysfs defaults 0 0
LABEL=swap-xvda3 swap swap defults 0 0

(Repair filesystem) 1# fdisk -l
Device Boot Start End Block Id System
/dev/sda1 * 1 49 98535 83 Linux
Partition 1 does not end with cylinder boundary.
/dev/sda2 49 19197 39062500 83 Linux
Partition 2 does not end with cylinder boundary.
/dev/sda3 ......
Partition 3 does not ......
/dev/sda4 ......
Partition 4 does not end ....

(Repair filesystem) 1# e2label /dev/sda1
/boot

(Repair filesystem) 1# e2label /dev/sda2
/

(Repair fielsystem) 1# ls /dev/sd*
/dev/sda /dev/sda1 /dev/sda2 /dev/sda3 /dev/sda4

(Repair filesyatem) 1# ls /dev/hd*
ls: /dev/hd*: No such file or directory


Kindly suggest any configuration of windows server or kernel configs missing or how to solve this issues

Many many thanks for your reply.

thanks & Regards,
Ujjwal

Bitlocker for a physical drive attached to a virtual machine

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Hi there,

we have a Server 2008 R2 on a Fujitsu TX200 with a Trusted Platform Module. There are running some virtual machines on it. The physical drives are encrypted by Bitlocker and all virtual machines on it running well by using VHD-Files. But there is one virtual machine with a physical drive attached. Is there anyone, who knows a way to protect the data on this drive?

Axel

Hyper-V Kills Performance

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I have a 3 month old Dell T110-II server with an Intel E31230 series processor and 16Gb RAM with over 3Tb disk space. The searver has a single Broadcomm Netextreme NIC, and the server is a domain controller running Windows Server 2008 R2. When I install the Hyper-V role on this machine, the performance slows down to a crawl. There are also AD and DNS replication issues. Physical machine CPU usage stays pegged at >82%. Memoory is hardly touched so it appears to be either a CPU issue or a network configuration issue after Hyper-V is installed. If remove the Hyper-V role, all problems go away and performance greatly improves (CPU usage stays around 3 to 5%). Any ideas what the issue is? This machine should be a good candidate for Hyper-V. I checked the BIOS and all the processor settings are correct for Hyper-V. Thanks.

CentOs 6 Performance - ksoftirqd

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Hello,

I'm having issues with a new virtual instance on CentOs 6.  I have the latest integration services installed and all appears to be fine.  When I test disk speed everything looks great, the issue comes into play when I load test the system.  If I start throwing requests at Apache I see a very rapid slowdown.  Top shows me that ksoftirqd is locking up considerable system resources.  If I take a look at cat /proc/interrupts i see:

           CPU0       CPU1
  0:        307          0   IO-APIC-edge      timer
  1:         46          0   IO-APIC-edge      i8042
  7:     103889          0   IO-APIC-edge      hyperv
  8:          0          0   IO-APIC-edge      rtc0
  9:          0          0   IO-APIC-fasteoi   acpi
 12:        114          0   IO-APIC-edge      i8042
 14:        411          0   IO-APIC-edge      ata_piix
 15:         80          0   IO-APIC-edge      ata_piix
NMI:          0          0   Non-maskable interrupts
LOC:      55041      30365   Local timer interrupts
SPU:          0          0   Spurious interrupts
PMI:          0          0   Performance monitoring interrupts
IWI:          0          0   IRQ work interrupts
RES:       1961       5333   Rescheduling interrupts
CAL:         44       3629   Function call interrupts
TLB:        513        468   TLB shootdowns
TRM:          0          0   Thermal event interrupts
THR:          0          0   Threshold APIC interrupts
MCE:          0          0   Machine check exceptions
MCP:          2          2   Machine check polls
ERR:          0
MIS:          0
           CPU0       CPU1
  0:        307          0   IO-APIC-edge      timer
  1:         46          0   IO-APIC-edge      i8042
  7:     103889          0   IO-APIC-edge      hyperv
  8:          0          0   IO-APIC-edge      rtc0
  9:          0          0   IO-APIC-fasteoi   acpi
 12:        114          0   IO-APIC-edge      i8042
 14:        411          0   IO-APIC-edge      ata_piix
 15:         80          0   IO-APIC-edge      ata_piix
NMI:          0          0   Non-maskable interrupts
LOC:      55041      30365   Local timer interrupts
SPU:          0          0   Spurious interrupts
PMI:          0          0   Performance monitoring interrupts
IWI:          0          0   IRQ work interrupts
RES:       1961       5333   Rescheduling interrupts
CAL:         44       3629   Function call interrupts
TLB:        513        468   TLB shootdowns
TRM:          0          0   Thermal event interrupts
THR:          0          0   Threshold APIC interrupts
MCE:          0          0   Machine check exceptions
MCP:          2          2   Machine check polls
ERR:          0
MIS:          0

Anything over about 5 users and the server will totally stop processing new requests.

Can anyone suggest where I may be having issues?

Thanks,

Keith

Hyper-v 2012 USB Support

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Hi,

I am trying to use USB ( non 3.0 ) disk as storage for my VHDs but its failing

Server = server 2012 in domain

Hyper- v

USB = 2.0

The above setup worked like charm in 2k8 R2 . when I upgraded my OS to 2012, nothing works ( creation / import of VHDs )

Tried different hardware ( USB 1TB or 750 GB disks ) no use.

Error messages - real strange , different operations gives different errors.

Things I tried :

a) Creating VM on USB - failed with General access error ( 80070005 ) , updated the driver ( DRVR_SATA_Intel_A01-2PWDK_setup_ZPE.exe) same error

b) Tried changing registry permissions ( no luck )

c) Gave full permissions for SYSTEM , users, administrator ( for testing purpose ) on the USB - no luck

d) created VHD on local disk , copied the working VHD - no luck

e) gave virtual machine SID on the VHD = no luck

its very annoying to find the root cause , I am not finding any light ahead.

please assist


Hyper-V VMs on private network

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Hi,

I have 2 Hyper-V host on the same network subnet. On each server there is one VM (per server) with assigned Private network. Is it possible to setup network environment without changing anything for VM where these two VMs can communicate?
I can change Hyper-V host, add NICs, whatever, but VMs must be on private network.

Thnx.

SR-IOV on Intel S1200 BTLR Xeon E3-1220Lv2

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I have installed Windows 2012 Hyper-V Server. The guest VM consists of a couple W2012 Servers simulating a Domain. The hardware is a Intel Intel S1200BTLR board (BIOS is up to date), a Xeon E3 1220Lv2 and a Intel I350 dualport NIC. The I350 support SR-IOV as well as the current driver (V. 17.4) does. The virtual switch is configured to support SR-IOV as well as the NIC in the VMs. However Network Status always shows:

Degraded (SR-IOV not operational)

VMQs are working. The command "(Get-VMHost).IovSupportReasons gives:

SR-IOV cannot be sued on this system as the PCI Express hardware does not support Access Control Services (ACS) at any root port. Contact your vendor for further information.

I really would like to get SR-IOV up and running. Does anybody know if the reason given is the "true" reason? Do I have to configure something (VT-x and VT-d is enabled)? 

I also would like to know if someone has gotten SR-IOV successfull running on stock hardware (like different Intel Server Board, for example one for the E5 processors with integrated i350 NIC).

I tried Intels Website to find some more informations regarding "this product is supported" or "this product will be support with the next driver version. But all it gives is some general information about SR-IOV and whitepapers.

Defragment

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Is defragment needed on Guest OS running on Hyper V?

Internally file space utilization is different but from host OS the VHD size looke the same.

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There are two identical VMs, only that one has 1GB ram & the other is running with 2GB.

When looking through the explorer the C:\ contains the page file, for vm1 its 1 GB & on vm2 its 2 GB but on the HOST OS the VHD size is same !!

How is that possible?

Is it something like unless the page file is utilized internally the VHD won't expand & show that space ?


yup

How to convert VHDX to VHD file format on windows 8 / Windows server 2012?

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