Hello:

I have a Windows 2003 Server running on Hyper-V server with latest service pack and patches.  All of the sudden I lost network connectivity.  This server has several other VM, with 2008 R2 and 1 with Windows 7 (no other Windows 2003 clients.

I tried: Reinstalling integration services (several times)

Remove adaptor, starting up VM with no adapter, and then re-adding.

Remove adaptor and then install legacy adapter.

Tried moving the VM to a 2012 Hyper-v server

At times the adaptor will get an IP address, but still have no network connectivity and at times will only get the autoconfigure address.

When it does get an address it can ping itself but no other.

I have no problems with any other clients on this host.

Any ideas?

TIA, Mark

Hello,

I am having issues connecting a newly installed Hyper-v server

I have an IBM blade that I have removed VMware off & installed Hyper-V Server 2012 R2 (Not Windows 2012 R2). The server has 4 1gb nics with 4 Vlans presented down them, they are all trunk ports.

I am unable to find even a couple of posts that make sense (at least in my head).

Is the process, install OS, team cards (if you want to), create virtual switch, but if so where do I put the IP address for the parent partition?

Is it on the team, it can't be on the virtual switch as it is not a nic.

At the moment I am happy with building the system, but configuring the network seems very contradictory on how it can be achieved.

Thanks, Matt

Hyper-v 2012 R2

I'm using the following command to set the Boot Order for Gen 2 VM however when the VM is powered on, it continues to boot from the OS boot drive SCSI,0,0

Set-SCVirtualMachine -VM "My-VM" -FirstBootDevice "SCSI,0,1"

I've confirmed that "SCSI,0,1" is set as the DVD drive and this is indeed a Virtual DVD that has an ISO mounted on it.

Any ideas why this is being ignored?

We have a Windows 2012 R2 (with GUI) host and 4 VM's. One of those VM's is our domain server. On this server is also Exchange installed.

We have issues with one application (opened from a client computer). The data of this application is on a share on de domain server. Sometimes the application is very slow. Also most of the times, one user is able to login and can work. Other users can login after a few hours waiting while the splashscreen (from the application) is showing. We have only troubles with this application. Other applications responds normally. Also browsing the share works normally. 

When opening the application there are between 100 and 150 small files openend ( :S ). Could it be that the slow response has something to do with that? Does somebody have some tips for me to tweak my system for better performance in this situation?

Thanks.

I am unable to create a file system on a large (> 2TB disk) virtual disk for a Linux VM.  I can create the disk, attach it to the VM, partition it with "parted", but I cannot run mkfs.ext4.  Details below.

Hyper-V 2012 Core (w/ all Windows/Microsoft updates as of 4/19).

CentOS 6.4 VM w/ 4 virtual processors, 4GB RAM, and 3 dynamic drives: 

/dev/sda  100GB IDE dynamic vhdx
/dev/sdb  75GB IDE dynamic vhdx
/dev/sdc  10TB SCSI dynamic vhdx

Using parted, created 500GB partition on the 10TB drive (/dev/sdc1). 

(parted) select /dev/sdc
Using /dev/sdc
(parted) print
Model: Msft Virtual Disk (scsi)
Disk /dev/sdc: 11.0TB
Sector size (logical/physical): 512B/4096B
Partition Table: gpt

Number  Start   End    Size   File system  Name                Flags
 1      1049kB  500GB  500GB               production_archive

then run: mkfs.ext4 /dev/sdc1

repeating error on console from mkfs.ext4:

INFO: task mkfs.ext4:2581 blocked for more than 120 seconds
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.

Runaway error in var/log/messages until my /var system filled up - 25G worth of it:

-rw-------. 1 root root 25085329408 Apr 19 23:15 messages

Apr 19 17:39:28 nfs2 kernel: sd 4:0:0:0: [sdc] Sense Key : No Sense [current]
Apr 19 17:39:28 nfs2 kernel: sd 4:0:0:0: [sdc] Add. Sense: No additional sense information
Apr 19 17:39:28 nfs2 kernel: hv_storvsc vmbus_0_13: cmd 0x93 scsi status 0x2 srb status 0x6

Same problem happens when running "mkfs.ext4 -E lazy_itable_init=1 /dev/sdc1"

Hi

Environment - HP DL580 G5 running 2012 R2 Hyper V

There are only 2 VM's on this box and the underlying storage is provided by Equalogic.

I have created 2 VM's running 2012 R2 Server with SQL 2012 Enterprise SP2 which are identical apart from one being generation 1 (imported from a 2008 R2 server) and the other being a native generation 2.

My issues is if I increase the memory to 20gb (runs fine on 10gb) on the gen2 server it will crash under load (dbbc checkdb or any other intensive operation).  Gen1 server has no problems running at 20gb.

I am suspecting a numa issue but before I go down this route was wondering if anyone else has seen this.  VMQ's have been disabled on both VM's

I'm trying to configure our Hyper-V server so that a user on our domain has administrative control.  Our Hyper-V server is on the domain running 2008 R2 (named SERVER85 below), and the client is on Win 7 Ent x64 (named DEV03 below, username accuraty\jkessel).

In the output below you can see that it appears we might have a problem with this user's access to the WMI path root\CIMv2, but if I pull up the advanced security settings for that node in WMI, I see:

Name: Justin Kessel (jkessel@accuraty.local)
Apply to: This namespace and subnamespaces
Permissions allowed: "Enable Account" and "Remote Enable" (no others, no denies).

IMHO, the server, the desktop, and user are all fairly "vanilla" with nothing unusual going on.  Maybe one thing worth noting: our Small Business Server 2008 (i.e. domain controller) is running as a VPS on SERVER85, so SERVER85 never boots with the domain controller on.  This hasn't ever caused problems except that the machine always thinks it's firewall should be in the "work" configuration instead of the "domain" configuration.  I tested running the HVRemote script while the SERVER85 firewall was turned off, and I get exactly the same results below.

One more note: this user currently can logon through RDP to SERVER85 and administer Hyper-V just fine.  This user is *not* a domain admin or an admin on that server - I've simply provided him with the right permissions to be able to RDP and admin Hyper-V only.

We used HVRemote and it output this info when run on the client:

Microsoft (R) Windows Script Host Version 5.8

Copyright (C) Microsoft Corporation. All rights reserved.

Hyper-V Remote Management Configuration & Checkup Utility

John Howard, Hyper-V Team, Microsoft Corporation.

http://blogs.technet.com/jhoward

Version 0.7 7th August 2009

INFO: Computername is DEV03

INFO: Computer is in domain accuraty.local

INFO: Current user is ACCURATY\JKessel

INFO: Assuming /mode:client as the Hyper-V role is not installed

INFO: Build 7600.16617.amd64fre.win7_gdr.100618-1621

INFO: Detected Windows 7/Windows Server 2008 R2 OS

INFO: Remote Server Administration Tools are installed

INFO: Hyper-V Tools Windows feature is enabled

-------------------------------------------------------------------------------

DACL for COM Security Access Permissions

-------------------------------------------------------------------------------

\Everyone    (S-1-1-0)

     Allow: LocalLaunch RemoteLaunch (7)

NT AUTHORITY\ANONYMOUS LOGON    (S-1-5-7)

     Allow: LocalLaunch (3)

BUILTIN\Distributed COM Users    (S-1-5-32-562)

     Allow: LocalLaunch RemoteLaunch (7)

BUILTIN\Performance Log Users    (S-1-5-32-559)

     Allow: LocalLaunch RemoteLaunch (7)

-------------------------------------------------------------------------------

ANONYMOUS LOGON Machine DCOM Access

-------------------------------------------------------------------------------

ANONYMOUS LOGON does not have remote access

  This setting should only be enabled if required as security on this

  machine will be lowered. This computer is in a domain. It is not

  required if the server(s) being managed are in the same or trusted

  domains.

  Use hvremote /mode:client /anondcom:enable to turn on

-------------------------------------------------------------------------------

Firewall Settings for Hyper-V Management Clients

-------------------------------------------------------------------------------

Domain Firewall Profile is active

   Enabled:  Hyper-V Management Clients - WMI (Async-In)

   Enabled:  Hyper-V Management Clients - WMI (TCP-Out)

   Enabled:  Hyper-V Management Clients - WMI (TCP-In)

   Enabled:  Hyper-V Management Clients - WMI (DCOM-In)

-------------------------------------------------------------------------------

Windows Firewall exception rule(s) for mmc.exe

-------------------------------------------------------------------------------

Domain Firewall Profile is active

   Enabled:  Microsoft Management Console (UDP)

   Enabled:  Microsoft Management Console (TCP)

-------------------------------------------------------------------------------

Additional configuration may be necessary

-------------------------------------------------------------------------------

  This computer is in a domain. If the target server is in a workgroup,

  you may need to set credentials for the server for Hyper-V Remote

  Management to operate correctly. This step should not be necssary if

  the target server is in the same or trusted domain as this computer.

  If necessary, from a *NON* elevated command prompt, enter:

     cmdkey /add:ServerComputerName /user:ServerComputerName\UserName /pass

  Note that you MUST enter ServerComputerName to BOTH parameters.

  You will be prompted for a password after entering the command.

-------------------------------------------------------------------------------

IP Configuration

-------------------------------------------------------------------------------

Windows IP Configuration

   Host Name . . . . . . . . . . . . : DEV03

   Primary Dns Suffix  . . . . . . . : accuraty.local

   Node Type . . . . . . . . . . . . : Hybrid

   IP Routing Enabled. . . . . . . . : No

   WINS Proxy Enabled. . . . . . . . : No

   DNS Suffix Search List. . . . . . : accuraty.local

Ethernet adapter Local Area Connection:

   Connection-specific DNS Suffix  . : accuraty.local

   Description . . . . . . . . . . . : Intel(R) PRO/100 VE Network Connection

   Physical Address. . . . . . . . . : 00-19-D1-05-57-01

   DHCP Enabled. . . . . . . . . . . : Yes

   Autoconfiguration Enabled . . . . : Yes

   Link-local IPv6 Address . . . . . : fe80::4406:b48c:dea3:de50%11(Preferred)

   IPv4 Address. . . . . . . . . . . : 172.16.48.185(Preferred)

   Subnet Mask . . . . . . . . . . . : 255.255.255.0

   Lease Obtained. . . . . . . . . . : Wednesday, November 10, 2010 3:19:23 AM

   Lease Expires . . . . . . . . . . : Monday, December 20, 2010 9:39:25 AM

   Default Gateway . . . . . . . . . : 172.16.48.1

   DHCP Server . . . . . . . . . . . : 172.16.48.210

   DHCPv6 IAID . . . . . . . . . . . : 234887633

   DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-13-62-35-81-00-19-D1-05-57-01

   DNS Servers . . . . . . . . . . . : 172.16.48.210

                                       66.209.192.5

                                       8.8.8.8

                                       66.209.192.15

                                       8.8.4.4

                                       4.2.2.1

   NetBIOS over Tcpip. . . . . . . . : Enabled

Tunnel adapter isatap.accuraty.local:

   Media State . . . . . . . . . . . : Media disconnected

   Connection-specific DNS Suffix  . :

   Description . . . . . . . . . . . : Microsoft ISATAP Adapter

   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0

   DHCP Enabled. . . . . . . . . . . : No

   Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Teredo Tunneling Pseudo-Interface:

   Media State . . . . . . . . . . . : Media disconnected

   Connection-specific DNS Suffix  . :

   Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface

   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0

   DHCP Enabled. . . . . . . . . . . : No

   Autoconfiguration Enabled . . . . : Yes

-------------------------------------------------------------------------------

Stored Credentials

-------------------------------------------------------------------------------

Currently stored credentials:

    Target: WindowsLive:name=jkessel@accuraty.com

    Type: Generic

    User: jkessel@accuraty.com

    Local machine persistence

    Target: LegacyGeneric:target=WindowsLive:(token):name=jkessel@accuraty.com;serviceuri=contacts.msn.com

    Type: Generic

    User: jkessel@accuraty.com

    Local machine persistence

    Target: Domain:target=TERMSRV/server85

    Type: Domain Password

    User: ACCURATY\jkessel

    Local machine persistence

    Target: WindowsLive:target=virtualapp/didlogical

    Type: Generic

    User: 02mybhosqazs

    Local machine persistence

-------------------------------------------------------------------------------

Testing connectivity to server:server85

-------------------------------------------------------------------------------

1: - nslookup for DNS verification.

     Note that failure is OK if you don't have a DNS infrastructure

~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~

Server:  sbs01.accuraty.local

Address:  172.16.48.210

Name:    server85.accuraty.local

Address:  172.16.48.201

~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~

2: - ping attempt (ping -4 -n -1 server85)

     Note the ping may timeout - that is OK. However, if you get an

     error that server85 could not be found, you need to fix DNS

     or add an entry to the hosts file. Test 3 will fail and provide more

     guidance.

     This may take a second or two...

~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~

Pinging server85.accuraty.local [172.16.48.201] with 32 bytes of data:

Reply from 172.16.48.201: bytes=32 time<1ms TTL=128

Ping statistics for 172.16.48.201:

    Packets: Sent = 1, Received = 1, Lost = 0 (0% loss),

Approximate round trip times in milli-seconds:

    Minimum = 0ms, Maximum = 0ms, Average = 0ms

~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~-~

3: - Connect to root\cimv2 WMI namespace

***** Failed to connect to root\cimv2

***** Error:     -2147024891 Access is denied.

***** Namespace: root\cimv2

     FAIL - Was unable to connect. Diagnosis steps:

     - Have you run hvremote /add:user or hvremote /add:domain\user

       on server85 to grant access?

     - Are you sure the server name 'server85' is correct?

     - Did you use cmdkey if needed? More information higher up.

     - Did you restart server85 after running hvremote /add for

       the very first time? (Subsequent adds, no restart needed.)

     - Is DNS operating correctly and was server85 found?

       Look at the output of tests 1 and 2 above to verify that the

       IPv4 address matches the output of 'ipconfig /all' when run on

       server85. If you do not have a DNS infrastructure,

       edit \windows\system32\drivers\etc on DEV03

       to add an entry for server85.

INFO: Are running the latest version

-------------------------------------------------------------------------------

3 warning(s) or error(s) were found in the configuration. Review the

detailed output above to determine whether you need to take further action.

Summary is below.

1: Anonymous Logon does not have remote access (may be ok)

2: You *may* need to set credentials for access to the server

3: Cannot connect to root\cimv2 on server85

-------------------------------------------------------------------------------

I'd greatly appreciate some help!

Thanks!

Hyper-V basic version, managed via Hyper-V manager from Windows 8.1

I have three physical drives (backup drives) that I would like to passthrough to a Windows Server Essentials 2012 R2 VM.

The WSE VM fails to start IF I have more than one physical drive attached to a virtual SCSI controller.

It will start if there is only one physical drive per controller, and once it is started I can add a second disk to one of the controllers without an issue.

Any suggestions? 

If not, I will probably just redo one of the drives as a Virtual drive and forget trying to pass them through as physical drives.

Thanks for any help!

Ross

Hi

i have set up failover cluster. i have 2 node.  Node1 and node2.

I have a test VM running on Node1. I tested failover, by running the "simualte failover". That did work. then i tested a unplaned scenario. I turned of the node1. i was expected that the VM was moved to Node2, taht didn happen. All the nodes loste connection and turn into restarting.

Also, The cluster is connected to FB. taht works fine. And i have set up som network in nic teaming. Lets say my ethernet switch goes down. ? and i losse my nic team(20 Gbs). isnt taht a scanrio to failover? and how do you configure that?

Hi All,

Recently I have got server failure. Info from memory dump is following. Cannot find the reason of failure. Please help.

6: kd> !analyze -v
*******************************************************************************
*                                                                            *
*                        Bugcheck Analysis                                    *
*                                                                            *
*******************************************************************************

MEMORY_MANAGEMENT (1a)
    # Any other values for parameter 1 must be individually examined.
Arguments:
Arg1: 0000000000041289, The subtype of the bugcheck.
Arg2: 00007fff141f4000
Arg3: 000000000000007b
Arg4: 00007fff141f4c01

Debugging Details:
------------------

Page 42459e not present in the dump file. Type ".hh dbgerr004" for details

BUGCHECK_STR:  0x1a_41289

DEFAULT_BUCKET_ID:  WIN8_DRIVER_FAULT

PROCESS_NAME:  vmwp.exe

CURRENT_IRQL:  0

ANALYSIS_VERSION: 6.3.9600.17237 (debuggers(dbg).140716-0327) amd64fre

LAST_CONTROL_TRANSFER:  from fffff801429ec412 to fffff801429c2ca0

STACK_TEXT:  
ffffd000`2796eaf8 fffff801`429ec412 : 00000000`0000001a 00000000`00041289 00007fff`141f4000 00000000`0000007b : nt!KeBugCheckEx
ffffd000`2796eb00 fffff801`428e2c47 : ffff0000`00000000 ffffe000`0559e568 ffffd000`2796ed00 00000000`00000000 : nt! ?? ::FNODOBFM::`string'+0x19282
ffffd000`2796eb60 fffff801`4292f933 : 00000000`00000000 ffffd000`2796ed00 fffffa80`00000000 ffffe000`0559e568 : nt!MiLocateWsle+0x2b
ffffd000`2796ebb0 fffff801`4292f62e : 00000000`00000000 ffffd000`2796ed00 fffffa80`00000000 ffffd000`2796ec70 : nt!MiTerminateWsle+0x2f
ffffd000`2796ec00 fffff801`428e3c41 : 00000000`00000000 00000000`00000000 fffff580`10804638 00000000`00000000 : nt!MiDeletePageTableHierarchy+0xd2
ffffd000`2796ed70 fffff801`42934989 : ffffffff`ffffffff ffffffff`ffffffff ffffe000`0559e568 ffffe000`019db080 : nt!MiDeleteAddressesInWorkingSet+0x4e1
ffffd000`2796f660 fffff801`42c4e7ab : 00000000`00040000 ffffd000`2796f800 ffffe000`019db080 ffffe000`0559e080 : nt!MiBeginProcessClean+0x9d
ffffd000`2796f6a0 fffff801`42c83ce8 : 00000000`00040000 ffffd000`2796f800 00000000`00000000 fffff801`42cbffca : nt!MmCleanProcessAddressSpace+0x67
ffffd000`2796f700 fffff801`42c18504 : ffffe000`0559e080 ffffc000`0b5f4930 ffffd000`2796f800 00000000`00000000 : nt!PspRundownSingleProcess+0xac
ffffd000`2796f790 fffff801`42d22fc4 : 00000000`c0000005 ffffe000`019db080 ffffd000`2796fb00 ffffe000`019db128 : nt!PspExitThread+0x4c8
ffffd000`2796f8a0 fffff801`428b481a : ffffe000`05393bb0 00000000`00000000 00000000`00000000 00000000`0000000c : nt!KiSchedulerApcTerminate+0x18
ffffd000`2796f8d0 fffff801`429c7bc0 : 000000fb`b5ca40a0 ffffd000`2796f950 fffff801`429694e8 00000000`00000000 : nt!KiDeliverApc+0x2fa
ffffd000`2796f950 fffff801`429ce55a : 00000000`00000000 000000fb`b5d39aa0 ffffe000`00600d00 ffffd000`2796fb80 : nt!KiInitiateUserApc+0x70
ffffd000`2796fa90 00007fff`142165ea : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : nt!KiSystemServiceExit+0x9f
000000fb`b652fac8 00000000`00000000 : 00000000`00000000 00000000`00000000 00000000`00000000 00000000`00000000 : 0x00007fff`142165ea


STACK_COMMAND:  kb

FOLLOWUP_IP: 
nt! ?? ::FNODOBFM::`string'+19282
fffff801`429ec412 cc              int     3

SYMBOL_STACK_INDEX:  1

SYMBOL_NAME:  nt! ?? ::FNODOBFM::`string'+19282

FOLLOWUP_NAME:  MachineOwner

MODULE_NAME: nt

IMAGE_NAME:  ntkrnlmp.exe

DEBUG_FLR_IMAGE_TIMESTAMP:  52341cf4

BUCKET_ID_FUNC_OFFSET:  19282

FAILURE_BUCKET_ID:  0x1a_41289_nt!_??_::FNODOBFM::_string_

BUCKET_ID:  0x1a_41289_nt!_??_::FNODOBFM::_string_

ANALYSIS_SOURCE:  KM

FAILURE_ID_HASH_STRING:  km:0x1a_41289_nt!_??_::fnodobfm::_string_

FAILURE_ID_HASH:  {e01cf37e-0b3f-17aa-251b-4e0e5b8f0b0f}

Followup: MachineOwner

I'm a bit new to the Hyper-V stuff and I have a few questions about the internals.  Any help is appreciated.

I have a simple Atom 8-core server box with Windows Server 2012 R2 Standard installed with Hyper-V.  I also have a VM with 2012 R2 Essentials to manage the network via AD, DHCP (I find it easier to do this from the server than the router even though Essentials isn't really meant to be set up this way - and I use...), WDS.  Storage is set up with multiple SSD's and hard drives in a tiered Storage Space on the host with ReFS.  The OS drive is just an SSD.

Ok, here's the questions:

1. The system has 4x 1Gb NIC's.  For simplicity sake, I just teamed them all and instead of using the Hyper-V load-balance mode, I chose the auto/dynamic mode.  I figured this would be better because the team is set up with a virtual switch that is shared with the host.  I just figure it's an easy out even though there are no dedicated NIC's for management or such.  Anyway, if the externally-connected virtual switch detects traffic for VM's, does this still connect to the physical NIC's and use up network bandwidth?  Is it better to use Internal virtual switch for VM's to communicate with each other over that virtual 10Gb vNIC (I do a lot of VM deployment and testing via WDS)?  It would seem that I would need 2 NIC's for each VM then: 1 internal, and 1 external for Internet access.  Internet connection sharing is supposed to be insecure and the new RRAS apparently doesn't do this anymore (I remember it from 2003), so neither option looks appealing to me.

2. If I was deploying multiple server VM's, I could go through completely duplicating VM's, but I've been reading some stuff about diskless servers via iSCSI using differencing disks.  There was a doc that mentioned that using differencing disks on Server 2008 R2 is not recommended for production environments.  Is that still true for Server 2012 R2?  Is so, why is the differencing disk option mentioned so formally regarding iSCSI deployments?  Does it make any sense to set up iSCSI Target Server on the VM host with a dedicated internal virtual switch with VM's using DHCP options to PXE boot from said target?  I realize you can do differencing disks already, but the Server 2008 docs (which are the only docs to mention differencing disks because the TechNet docs for Server 2012 R2 just refer back to them) say that they aren't recommended for production use.  Is using iSCSI the exception then for using differencing disks for multiple virtual servers based off a gold master image?

3. (Not related directly to Hyper-V) Why are expanded WIM files so much bigger in WDS than VHD's?  A VHD represented in WDS always appears to be the same size as the raw file.  When importing a WIM, however, it is not only larger than the original WIM due to extraction, but often bigger than an equivalent VHD too (I'm using the new PowerShell WIM2VHD script to convert them too).  Why use WIM's instead of VHD's in WDS?  Does WDS support differencing disks?

Hi

I am just wondering how do we get a VM to move when it looses network Connectivity. I dont meen when the host goes Down just when the vm looses Connection. The host it self is fine. This is on Windows Server 2012R2

I would like to set this option on some of my VM in my cluster.

Hi,

I'm running windows 8.1 as a host machine. I've installed Hyper-V feature and then I installed a windows 7 in a virtual machine.

But the pain point is it does not get full screen because it just hasn't the screen resolution I'm looking for. So changing the resolution is not an option since it says that my total available graphics memory is 8 mb. How can I increase this memory ?

My Hyper-V vistual machin configuration for windows 7 is :

RAM: Dynamic 1024 , CPU: 4 virtual 

So I asked the Below question in the server 2012 general forum but i am sure it is the wrong forum so I though I would ask it here in the hyper-v forum .

So I have one DC in my environment that I would like to upgrade from Windows Server 2012 to Windows Server 2012 r2. I thought before I upgrade the production server I would convert it to a Hyper-V virtual machine and preform the upgrade on a machine that can be deleted if the upgrade goes horribly wrong. We use Symantec Backup Exec 2014 to backup and restore. So I was able to restore to a virtual machine,   the machine powers on, I was unable to open any of the ADDS administration consoles until I added a Microsoft loop back legacy NIC. To make matters worse when I try to run the in place upgrade from Windows Server 2012 to Windows Server 2012 r2 I receive and error asking me to first run ADPREP /FORESTPREP and /DOMAINPREP. Unfortunately when I run either one of these commands I receive an error saying that that ADPREP can find the DNS name for the domain or forest. So my question is how do I restore an ADDS server to a virtual machine and bring up all the services so that it functions in the capacity that the physical machine was functioning but in a closed environment. Thanks for your time and consideration of my inquiry.

Best regards,

Zajac

Something I have noticed on both Netapp and IBM SAN in house.  If I run a disk test such as SQLIO.exe or diskspd.exe inside a GUEST and use the self-generated test file I get very high and unrealistic numbers.  Example to netApp storage:

Using self generated testfile.dat  141361 IOPS and less than .5msec latency

Using a file with real data 6883 IOPS and 9msec latency

The second set of data is very realistic.  If I run this test from a physical server the results are always in line.  So what magic is Hyper-V doing?  I can see that it isn't really even hitting the SAN for data.  Does it cache that much data?  Does it somehow recognize the pattern and not even talk to the SAN for it?  I have the CSV cache set to 512MB.  I can do this with larger files and get the same results though.

These were all 10GB test file and 8k random reads.

Hello,

We have 2 separate Hyper-V 2012 R2 Clusters using iSCSI SAN CSVs as storage.For these I have set up 2 PSGs for VM backups using checkpoints (As new in DPM 2012R2/Hyper.V 2012 R2)

90% of the VM backups work in online mode but some shows as Offline when running the DPMGuide to add a VM to a PSG.The server OS versions differs between WS2003 R2 SP2/WS2008 SP2 / WS2008 R2 SP1 / WS 2012. Windows Server Backup is installed on all VMs and vssadmin list writers shows no errors.How can I elaborate and solve this issue?

Thx /Tony

I want to be able to connect with a Windows Mobile Device through Windows Mobile Device Center, within a Virtual Machine.  When connecting through the Hyper-V Manager and through Remote Desktop, under "Other supported RemoteFX USB devices", I can see the Symbol USB Sync Cradle.  In the VM, in Device Manager, I don't see a USB connection.  In the VM, I don't see any meaningful errors in the Event Viewer.

Host:  Windows 8.1 Enterprise Hyper-V on a Domain.  Upgraded from Windows 8.1 Pro.  When this computer was originally installed with Windows 8 Pro, Hyper-V was enabled.  I removed Hyper-V, and installed VMWare Player, because I wanted USB Pass-through.  I then uninstalled VMWare and installed VirtualBox.  Recently, I uninstalled VirtualBox, upgraded to Windows 8.1 Enterprise, and enabled Hyper-V.

Virtual Machine OS: Windows Server 2012 R2 on a Workgroup.  Started out with being a VMWare VM, using VMWare Player.  Moved to VirtualBox.  USB Pass-through was working in both those virtual environments.  Used Disk2VHD to convert the VM to a VHDX file.

On the Host:

1. Windows Mobile Device Center is connected to a Motorola Windows Mobile Device (MC959X) sitting in a Symbol USB Cradle.  The OS on the scanner is Windows Embedded Handheld 6.5 Classic CE OS 5.2.29217 (Build 29217.5.3.12.26).  Advanced Networking (USB to PC) is not enabled.
2. Enabled RemoteFX. 
3. In the RDP file, and in the Registry, added the GUID's for:

• WPD "{eec5ad98-8080-425f-922a-dabf3de3f69a}";
• Windows Mobile "{6AC27878-A6FA-4155-BA85-F98F491D4F33}";
• USB Device "{88BAE032-5A81-49f0-BC3D-A4FF138216D6}";
• Windows CE USB Device "{25dbce51-6c8f-4a72-8a6d-b54c2b4fc835}";
• GUID_DEVINTERFACE_USB_DEVICE "{A5DCBF10-6530-11D2-901F-00C04FB951ED}"

Ran "sfc /scannow"

All Microsoft Updates are current.

What am I missing?

Hi,

I am new to hyper-V and trying to make centos 7 work with hyper-V server 2012 R2. 
I have already done sriov bios settings on hyper-v and iovsupportreasons displays ok. 

IovSupport                                : True
IovSupportReasons                         : {OK}

Then I created an external switch and that too says iovsupportreasons: ok. But iovvirtualfunctionsinuse shows 0 even though I have created a vm network adapter sriov enabled and assigned to it.

I am not seem to make it work. Trying hard from past 2 days. Googled a lot but to no avail.

Installing Windows 2012 R2 under Hyper-V virtual machines, the disk size in the end is around 9 GB but in case the BlockSize is set to :268435456. It goes above 11 GB.

Then doing the same operations on a differencing disk the size goes to 4 GB in case the block size is 2 MB but 14 GB when the BlockSize is 256 MB.

Any ideas why?

yup

Dear Team,

I needs to create new ADC...Please suggest.

Regards, Ravi Kumar