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Cluster validation test fail when creating hyper-v cluster

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I have 4 identical nodes.  By identical I mean even the timing on the RAM are the same across all four nodes.  These are Proliant DL360 G6 servers which I have previously used in a clusters.  OS is Server 2008 R2 SP1 Core, drivers and firmware are all identical.  Each server has an additional fiber HBA card and quad port NIC.  Drivers and firmware is identical on each card.  System firmware is the same.  I built the server using HP smartstart 8.7 and did not install HP's network config utility since it causes issues.

All nodes are attached to an HP EVA8400, each node can see the two LUNs I am beginning with.

When I used the failover cluster manager to validate the configuration I get the following on one node:

An error occurred while executing the test.
There was an error verifying the IP configuration.
Unable to connect to Server03 via WMI. This may be due to networking issues or firewall configuration on Server03.

I can run a WMI test from another node and get a response from Server03 indicating the WMI is working properly.  For example the command to get maxclockspeed.  I have disabled the firewall on all nodes.  All networking settings are identical.  Have a management NIC, heartbeat, and livemigration NIC.  The remaining three ports are for VMs.  These are all one the same switch stack (have the heartbeat and live migration isolated).  Every address is pingable from each node.  There are no hardware firewalls.

So I try to add the machines to VMM 2012.  I add them and attempt to create a cluster and get the following error:

An error occurred while executing the test.
Invalid class

This happens on the Gathering inventory data for servers running Hyper-V portion.  And it bombs out.  I tried again removed the troubled Server03 and just using Server01 and Server02.  Same error.

When using the failover manager all other tests pass.

I built a hyper-v cluster when R2 first came out and I swear I did not have this much trouble.  I can't use 2012 because our EVA won't support it so I have to figure this out.


How Many Licenses to work on Hyper-V

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Hi everyone,

As nowadays virtualization is pushing boundaries and companies need to keep up, we are trying to understand how Hyper-V and pooled virtualization works.

Here's our scenario:

Currently we have 2 servers with terminal server service running. (WS 2008 R2 Standard)

We have up to +100 users connecting to those servers using Remote desktop.

The requirement is to give each of those 100 users a VDI on Windows 7 and try to do it by pooled VDI's. Not allowing personalization or any software installation from clients.

The main question is about hardware and Licenses.

1. What would be the minimun requirements to give each user a Windows 7 machine with 1 or 2 cores, 4 GB ram and Hard Drive space managed by LUN through our SAN (Is ti possible BTW?)

2. How many Windows 7 Licenses do we need in order to only have 2 VDI, one for staff and one for specializade professionals with CAD software.

Thanks!!


hyperv failover cluster private network not found when creating cluster

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Both nodes are Win2012R2 Datacenter.

Per the recommendation in this article (http://technet.microsoft.com/en-us/library/jj863389.aspx) I have created a private network in addition to the LAN on which both nodes reside. And I can ping between the two using the private IP addresses.

Networks   It is recommended to have a minimum of two networks for your failover cluster: a public network that allows clients to connect to the cluster and a separate network that is used only for communication between the clustered servers. As needed, you can configure additional networks for specific storage options or for redundancy.

When I run the Create Cluster Wizard at the Access Point for Administering the cluster. I receive an informational message: One or more IPv4 addresses could not be configured automatically.

The LAN network is shown but the private network is not.

I am new to this so I am not sure if I have missed something or if this is the expected behavior.

Thanks in advance for the help.


davidh

Server 2012 / Hyper-V Storage Configuration

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Guys, I need to spec out a new Hyper-V server and just wanted some general feedback / suggestions from the community on how to configure the storage as far as best performance.

I have a quote from our hardware vendor right now for the following:

OS (Hyper-V) partition: (2) 146GB SAS 15K drives in RAID-1

Storage partition (VMs will live here): (4) 1TB SAS 7.2K drives in RAID-5

SQL database partition (our SQL DBs will live here): (2) 128GB SSD drives in RAID-1

All partitions driven by a single IBM ServeRAID M5100 controller.

Is there a benefit to having the OS on a separate partition from the VMs? Do we need 15K drives for the OS partition, or would 10K or 7.2K drive be sufficient? Any other feedback / suggestions would be greatly appreciated.


Shaun

Hyper-V NIC in promiscuous mode

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Hello,
 
    Is there a way to setup a NIC in hyper-V or the Hyper-V virtual Swith to support promisuous mode for Web Filtering Software like websense?

Thank

ML

Hyper v cluster and storage

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I am looking to set up a hyper v cluster using server 2012 and a NAS storage with an addition DAS attached via SAS.  Should I also attach the clustered servers to the NAS via SAS. The network is only a 1gb and I would have between 10 and 15 servers as VM's.  Any thought would help.

vm2dmp.exe supporting Hyper-V 2012 R2

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For education purpose, I am currently researching how memory content can be extracted and analyzed from snapshots and saved states from Hyper-V. Hyper-V saves this information in files with the extensions *.vsv and *.bin. To convert these files to a usable dump full memory dump (*.dmp), the "Hyper-V VM State to Memory Dump Converter" (vm2dmp.exe) was released in January 2010 (http://archive.msdn.microsoft.com/vm2dmp). However, this tool works only on files created with Hyper-V Version 2 (Hyper-V/Windows Server 2008 R2). When snapshots or saved states created on Hyper-V 2012 or 2012 R2 are tried being converted, the tool fails.

It seems that the format of the *.vsv and *.bin files has changed and the converter tool is not capable of processing the changed file format. Does anyone know about any changes from Hyper-V Version 2 to Version 3 or the new file format? I guess the format specification is not public available. However, it would be of enormous help to have the possibility to be able to convert those files created by Hyper-V Version 3 for the purpose of analysing as well.

I understand that it might not be possible to have the format specification of the snapshot files for further research. But as the vm2dmp.exe converter tool already exists for the previous version of Hyper-V, I believe that providing a tool or the information about the snapshot file format is worth a discussion. Provided with this information, it would ideally be possible to extend the existing or implement a new conversion tool to support a broader range of Hyper-V versions. I could imagine that this could also possibly lead to new capabilities in snapshot migration.

I appreciate any replies with ideas and further information.

Thanks,
Christian

Installation Windows server 2012 hyper-v

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Background

I have machines running windows server 2003, Windows Server 2012, Windows XP, Windows 7 and Windows 8. I want to virtualize them all. They are part of a large system we built and maintain. We are in the process of redesigning the system and the plan is to run the old system components as VM's on one big server and build the new system on the same server. This makes for an efficient development setup and we can design and test the upgrade incrementally. We have an incremental rollout where the system must use old and new components.

My question is; if I use the Windows Server 2012 Hyper-V how do I capture the running versions of the systems and make them VM's?

A related question; The server I plan to use as the VM server is a heavy-duty HP box that is running Windows Server 2003. (16 cores, 64 GB memory and 8TB SAS) Can I install Windows Server 2012 Hyper-V without having to go thru the whole install / configuration process?

Thanks for any guidance.


Hyper-V Virtual Switch Manager notes disappearing

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Our setup is the following:

Three Dell Poweredge R720s running Windows Server 2012 R2 (which was upgraded in place from 2012). These servers run Hyper-V and we use Virtual Switch Manager to manage the networking in the VMs. Due to the fact that the Ethernet ports do not map to the correctly labelled Ethernet adapters in the operating system, we have notes in the Hyper-V switch manager to show which virtual adapter is mapped to which physical port.

I'm not sure if it was after the upgrade to 2012 R2 or something else, but the notes from the Virtual Switch Manager have just disappeared. Everything else has stayed the same, but there's no notes any more. Has anyone else encountered this? Is there any way we can prevent this happening? We believe it is also happening when we do live migrations, but we need to do a few more tests to see what happen when, so I can't confirm.

2008 r2 hyper-v guest with static IP always looses network connectivity after every restart - no problem with DHCP

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Hello,

We are running 2008 R2 domain with one physical DC and other running in VM on Hyper-V host (2008 R2 Standard). The host has 4 NICs and is configured to use one physical NIC for itself (management) and the hyper-v guest is configured to use another dedicated/physical NIC (through microsoft virtual switch) just for itself.

I noticed that after setting the hyper-v guest with a static IP address all works fine only until guest restart. When the guest boots up the IP address is still configured correctly in IPv4 properties, but there is no network connectivity at all and in fact the guest shows running APIPA config in ipconfig /all output. That situation continues until I remove the virtual NIC from hyper-v guest, remove the virtual switch from dedicated NIC on host and then reconfigure it (using same settings as they were). very annoying.

For time being I switched the virtual DC (problematic hyper-v guest) to a DHCP IP and configured DHCP server (running on physical DC machine, not on hyper-v host) to store a reservation for the hyper-v guest so it always gets the same "static" IP configuration.

Is there some kind of a problem/bug with using static IP on (2008 R2) hyper-v guests? is there a hotfix for static IP config in hyper-v guest environment?

both 2008 R2 OSes (host and guest) are up to date with all updates (synced with Microsoft, not WSUS).


Hyper-V harddisk consideration for exchange 2013 mailbox server role

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Hi,

while i was going through videos on  virtualizing exchange server 2013 ,at some point it said  "With Mailbox role use SCSI pass-through disk or iSCSI" . What does it mean ?

We have virtualized our Exchange 2013 with 2 CAS  and Mailbox servers on Hyper-V.

We have created with default configurations like hard disk as IDE,will this affect the performance.

Thanks in advance.


Clustering Free Hyper-V or Windows Server 2012 Standard with Windows Server 2012 Datacenter

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Hi,

Is anyone running a cluster which has Datacenter 2012 clustered with either Standard 2012 or Hyper-V 2012?

I have seen posts here and elsewhere that say it is possible but when I rang Microsoft Licencing team to discuss licensing in this scenario they advised me that the hardware and OS on each clustered server must be identical.

Now I'm really confused.

Thanks,

Virtual Machine Management service isn't running - Unknown Error

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Hello , i am dealing this problem .

When i click start service i get this error message 

Previously i was able to start a windows phone emulator.

I just deactivated hyper-v so i could run vmware and then reactivated it and this error occured.

VM Guest Slow Disk

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Hi all,

Forewarning:  I sort of got this stuff dumped in my lap so I am by no means close to an expert in virtualization.  I apologize in advance.

Scenario:

We are using Hyper-V VMs as our build machines (Windows 7 SP1 64-bit guest OS) for all of our products.  Right now I'm trying to shave time in the main solution compilation times for the one project and have been getting hardware increases on the Hyper-V host server.

The IT admin ran SQLIO on the host (Server 2012 - not R2) and saw numbers like: 

IOs/sec: 28259.00
MBs/sec: 220.77


I ran SQLIO on the VM in question and saw numbers like:

IOs/sec 4070.33

MBs/sec: 7.94

Now the host hard disk setup is 2x 10k SAS drives.  I've tried plugging an SSD in and sticking one VM on there and re-running and saw no increase.

This is leading me to believe there's a wonky configuration somewhere.  I have the drive set to a fixed-disk vhdx on IDE controller.


Any ideas?


Server 2012 Replication Error VHDX Replication Access Denied

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I have a virtual file server that will not replicate due to the storage VHDX that is installed under the SCSI Controller as a virtual hard drive.  The drive contains all the file shares for the file server.  The VHDX was initially created on different VM which was the DC.  If i remove the VHDX the file server will replicate fine but not with the SCSI VHDX installed.   I have tried to put the SID of the VM all permissions seems fine the SID of the current host VM is listed under permissions.  I even created a new VHDX under Hyper-V manager and copied the contents under the Hyper-V manager but I still get the same General access denied error (0x80070005). Any help will be greatly appreciated.

Here are the Exact errors that I receive from the replication health maybe this may shed some light.

Event ID 32074
Hyper-V successfully enabled replication for primary virtual machine 'FileServer' (Virtual machine ID xxxxx-xxxx-xxxx-xxxx-xxxxxxxxx)

Event ID 16370
'FileServer' cannot create the storage required for the checkpoint using disk C:\ClusterStorage\volume2\data.vhdx:General access denied error (0x80070005).
(Virtual machine ID xxxxx-xxxx-xxxx-xxxx-xxxxxxxxx)

Event ID 18012
Checkpoint operation for 'FileServer' failed. (Virtual machine ID xxxxx-xxxx-xxxx-xxxx-xxxxxxxxx)

Event ID 33676
Replication operation for virtual machine 'FileServer' failed: General access denied error (0x80070005).
(Virtual machine ID xxxxx-xxxx-xxxx-xxxx-xxxxxxxxx) (Primary server: 'FCNode01.MI.local', Replica server: 'Replica02.MI.local')

Event ID 32042
Hyper-V failed to generate initial replica for 'FileServer': General access denied error (0x80070005).
(Virtual machine ID xxxxx-xxxx-xxxx-xxxx-xxxxxxxxx)

Event ID 33680
Replication operation for virtual machine 'FileServer' failed.
(Virtual machine ID xxxxx-xxxx-xxxx-xxxx-xxxxxxxxx) (Primary server: 'FCNode01.MI.local', Replica server: 'Replica02.MI.local')

Event ID 32086
Hyper-V suspended replication for virtual machine 'MIFileServer' due to a non-recoverable failure.
Resume replication after correcting the failure. (Virtual machine ID xxxxx-xxxx-xxxx-xxxx-xxxxxxxxx)
                                     


Terrible performance after moving VM's to new hardware

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We recently decided to purchase a new server to run our VM's on since the old one did not have redundant drives. Unfortunately our new and improved server has resulted in far worse performance now that I've moved the VM's over to it! I am not really sure why, but can only assume it is to do with the drive configuration.

Basically when the VM's are running on the new virtual server host, it takes a long time just to login to the VM's (with our without a roaming profile). General use once you are logged in seems OK, but it is much slower than before. We have a DC as one of the VM's and when it was on the new server it was taking a very long time to provide AD group membership information resulting in some applications that request this information to perform very badly. As a result, I had to move that VM back to the old server.

The new server has the following specs:

Dell PowerEdge R620

2x Xeon E5-2630v2 2.6GHz processors

64GB RAM

PERC H710 integrated RAID controller, 512MB NV CACHE

6x 1TB 7.2K RPM 6Gps SAS 2.5" HDD

O/S (C drive) configured on RAID 1 using 2x 1TB drives, GPT partition

Hyper-V storage (D drive) configured on RAID 10 using 4x 1TB drives on 2 spans, GPT partition on simple volume in Windows formatted with 64KB cluster size

Running Windows Server 2012 Datacenter R2 with Hyper-V

The old server has the following specs:

Dell PowerEdge 2950 (2007 model)

2x Xeon E5335 2.0GHz

24GB RAM

Unknown RAID controller

4x 300GB 15K SAS drives running with NO RAID. Each drive holds 2-3 separate VM's.

Running Windows Server 2012 Datacenter with Hyper-V

The new server is currently only running 6 VM's and already displaying the performance problems. We have over 10 VM's that need to be hosted ideally. The current 6 VM's which are running include our production Exchange 2010 server (only 10 staff with an 80GB VHD), Windows Update Server (100GB VHD), SQL 2000 server with limited use (100GB VHD), FTP server with minor use, build server for .NET development with infrequent use and a basic server which is used for licensing/connection services for our own applications we develop (low use).

The only thing I can think of is the difference in the disk/RAID configuration. But it seems this configuration I am using is quite popular and therefore I would expect it to easily handle 6 VM's given the specs of the server?

Any help much appreciated.

Virtual SAN Manager Hyper-V 2012 R2 iSCSI

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I think I know the answer to this question, but one someone to tell me for sure....

We currently have iSCSI San's implemented in our organization.  We are using Hyper-V 2012 R2 and doing nothing fancy with it.  We could like to be able to take advantage of Virtual SAN Manager within Hyper-V to take care of the snapshotting, etc..  It appears that in order to use this you must have a FC SAN.  Can someone tell me if this is a correct statement or not?

Any help would be greatly appreciated.

Relative Weight and vCPU allocation query

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Hi all

I've done a lot of reading around this subject mainly starting here:

http://social.technet.microsoft.com/wiki/contents/articles/1234.hyper-v-concepts-vcpu-virtual-processor.aspx

So I know the technical descriptions and some of the background but there is one key area on which I am seeking some clarification if possible.

Most of my Hyper-V experience is with 2008 and 2008R2 so that's what I will be asking about (but it would be useful to know if 2012 changes anything).

I understand the concept of virtual CPUs (vCPU) as given to a VM via the VM settings dialog box. I understand that giving a VM 1 to 4 vCPUs does not give the VM any sort of 1:1 or exclusive right to any of the parent's CPU cores. My understanding is that (basically) the parent server's cores are formed into a 'pool' and each VM is given a 'time share' of this pool of CPU. I know it is more complex than that due to the way threads may not easily be moved from core to core but let's ignore that!

I understand the 'relative weight' option is used to distribute the 'grunt' from the pool of parent CPU to the VMs such that each VM gets a proportion of the parents CPU-pool as per the ratio of the relative weight scores.

So as an arbitrary, simplified example let's imagine the parent has 2 physical quad core CPUs running at 2.0Ghz. So that's 8 cores running at 2Ghz. So let's imagine the CPU-pool 'grunt' is 16Ghz. (Grunt could be also called 'power', 'horsepower' etc.) I know it doesn't work out quite like this but this is simplified.

So we add some VMs.

Let's add 4 VMs all with 1 vCPU and all equal 100 relative weight (RW). For the sake of argument all the VMs are 'busy' so that they always need CPU. Let's say each of them shows fairly constant 80% CPU activity in Task Manager within the VM. None of the VMs are Terminal Servers. Let's also ignore the Hyper-V parent partition's draw on CPU as negligible.

So in this case, if there is contention for the parent CPU, then each of the 4 VMs would be allocated an equal time share of the parent's pool of CPU. So it might be said that on average each VM runs as if it had 4Ghz of 'grunt'. Inside each VM the applications would see a single vCPU running at 4Ghz. (Bear with me on Ghz, I could have called Ghz 'gruntz' or indeed anything, but I think it helps to talk in terms of Ghz as this is familiar).

Is this correct? Assuming it is then ...

So now I need more 'grunt' to be available to the first VM. So some people may consider two options. Increase the number of vCPU assigned to the VM or increase the Relative Weight. This is where I am confused.

So my question is if the RW is kept constant does increasing the number of vCPU make any more grunt available to a VM or is the grunt simply divided up. For example:

I change VM1 so have 4 vCPU. My understanding is that because RW has not changed then the applications running on VM1 see things change from 1 vCPU running at 4Ghz to 4 vCPUs running at 1Ghz. I surmise this because the RW is what dictates the amount of time a VM gets on the parent pool of CPU so the VM's allocation (of 4Ghz) must be divided by the number of vCPU.

However I am continually faced with clients asking to allocate more vCPU because they feel this improves the performance of the applications running on the VM, hence I wanted some clarification on whether my understanding is correct or not.

I know that Brian Ehlert, and others, have often stated that it is best to try and give VMs as few vCPUs as possible so that the VM's OS doesn't need to spend time shuffling threads. If this is the case then what is the background or reason for increasing the allocation of vCPU to a VM? Why add more? When does it have benefit? Is it also required to increase the RW at the same time as adding the vCPU?

It would be great if there was an in-depth article from Microsoft explaining how this all works, in the meantime I'm hoping for some enlightenment from this forum.

Thanks in advance.

Ian

does a migrate interrupts VM during migration

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Couple of years ago I did a migration of VM on 2008 host with VMM2008. I don't remember if there is an interruption during migration.

I need to perform one time backup of live VM. I cannot stop this machine for making an export right now.

So need a confirmation of MIGRATE action. Worst case scenario I can do a backup later with the EXPORT option.

VM on 2008. VMM2008 available.

Thx.


"When you hit a wrong note it's the next note that makes it good or bad". Miles Davis

Hyper-V Guest Disk Configuration and SAN placement

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In a nutshell, I have a test 2012 R2 cluster (2-node) attached by fibre to a SAN.  The SAN at present is configured with 2 volumes, one RAID 10 and the other RAID 5.

2 questions really.  Is it best practice for each guest to have 2 virtual hard disks, one for OS and the other for data.  If so, would it be appropriate to put the OS vhdx on the RAID 10 and the data on RAID 5?

I'm trying to get a general rule of thumb rather than cater for say specifics such as SQL server.  I'm really looking at file servers and the like initially.

Ian

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