Hyper-V failover confusion

I'm trying to study for 70-414 and am trying to setup a home test lab to help out. I have two physical servers and an iSCSI storage device. I've been trying to figure out on my own how to best set this up but am at a loss.
I think I want a failover Hyper-V cluster. Is this even possible with my current setup? Or do I need a file server to host the storage?
I've tried creating a failover cluster with shared storage pointing directly to my iSCSI device and I created a single VM and that worked. But, when I tried to create another VM it wouldn't work because it said the storage disk that I created was already
owned by the first VM. It is a 1 TB drive that I want to share with multiple VMs. I'm wondering if I need to have a file server hosting this so that I can have multiple VMs on a single shared disk or if I'm just doing something else wrong.

Hi AMD4EVER,
" On a failover cluster that uses Cluster Shared Volumes, multiple clustered virtual machines that are distributed across multiple cluster nodes can all access their Virtual Hard Disk (VHD) files at the same time, even if the VHD files are on a single disk
(LUN) in the storage. This means that the clustered virtual machines can fail over independently of one another, even if they use only a single LUN. When Cluster Shared Volumes is not enabled, a single disk (LUN) can only be accessed by a single node at a
time. This means that clustered virtual machines can only fail over independently if each virtual machine has its own LUN, which makes the management of LUNs and clustered virtual machines more difficult.
For a two-node failover cluster, the storage should contain at least two separate volumes (LUNs), configured at the hardware level. Do not expose the clustered volumes to servers that are not in the cluster. One volume will function as the witness disk (described
later in this section). One volume will contain the files that are being shared between the cluster nodes. This volume serves as the shared storage on which you will create the virtual machine and the virtual hard disk. To complete the steps as described in
this document, you only need to expose one volume."
For details please refer to 'hardware requirements for a two-node cluster" within following link:
http://technet.microsoft.com/en-us/library/cc732181(v=WS.10).aspx#BKMK_Connect
Best Regars
Elton Ji
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Virtual memory in a hyper-v failover cluster

Hi all,
We have a window 2008 R2 hyper-V failover cluster working fine. It has two hosts, with 104 GB of memory on each of them.As I added new virtual instances I had been updating memory.
The point is that as I do that page file for virtual memory has been growing and now System volumen has only 20 GB free space.
I had like to go on adding memory for new virtual instances, so I need to fix this problem. Which is the recommended configuration for this? Can I disable virtual memory as long as I have an enormous quantity of physical memory available?
Thank you very much.
Kind regards,
David.

Hi,
that enormous page file at Hyper-V Servers make no sence.
We do not need to configure virtual memory for physical Memory that is assigned to VMs.
Check this for more informations:
http://blogs.technet.com/b/rwagg/archive/2010/03/08/how-big-should-pagefile-sys-be-on-a-server-2008-hyper-v-server.aspx
Hope that helps
Regards
Sebastian

Hyper-V Failover Cluster virtual guests suddenly reboots

The environment is Server 2012 R2 using dual clusters--a Hyper-V Failover Cluster running guest application virtual machines and a Scale-Out File Server Cluster using Tiered Storage Spaces which are used to supply SMB3 shares
for Quorum and CSV. Has anyone had this problem?

Anything relevant in the host or guest event logs? I would also check the cluster event logs to see if there are any indications there as well.
Does the guest go down hard or gracefully reboot?
Need more info.
Andy Syrewicze
Come talk more about Hyper-V and the Microsoft Server Stack at
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Post are my own and in no way reflect the views of my employer or any other entity in which I produce technical content for.

Hyper-V Failover Cluster Networking Configuration After Install

Hello All,
Is it possible to install hyper-v and failover or in other words create a hyper-v failover cluster and then configure the networking part of the solution later? As I am coming into
terms with the networking part of it, wanted to do it later after the install. Is it possible?
And from later configuration, I am trying to say, creation of NIC Team, Virtual NICs, VLAN tagging, etc.

Hi,
Failover cluster deployment requires network connectivity between cluster nodes. You can't create a cluster without properly configured TCP\IP on cluster nodes.
http://OpsMgr.ru/

Hyper-V Failover Cluster Configuration Confirmation

Dear All,
I have created a Hyper-V Failover Cluster and I want you to confirm if the configuration I have done is okay and I have not missed
out anything that is mandatory for a Hyper-V Failover Cluster to work. My configuration is below:
1. Presented Disks to servers, formatted and taken offline
2. Installed necessary features, such as failover clustering
3. Configured NIC Teaming
4. Created cluster, not adding storage at the time of creation
- Added disks to the cluster
- Added disks as CSV
- Renamed disks to represent respective CSV volumes
- Assigning each node a CSV volume
- Configured quorum automatically which configured the disk witness
- There were two networks so renamed them to Management and Cluster Communication
- Exposed Management Network to Cluster and Clients
- Exposed Cluster Communication Network to Cluster only
5. Installed Hyper-V
- Changed Virtual Disks, Configuration and Snapshots Location
- Assigned one CSV volume to each node
- Configured External switch with allow management option checked
1. For minimum configuration, is this enough?
2. If I create a virtual machine and make it highly available from hyper-v console, would it be highly available and would live
migrate, etc.?
3. Are there any configuration changes required?
4. Please, suggest how it can be made better?
Thanks in advan

Hi ,
Please refer to following steps to build a hyper-v failover cluster :
Step 1: Connect both physical computers to the networks and storage
Step 2: Install Hyper-V and Failover Clustering on both physical computers
Step 3: Create a virtual switch
Step 4: Validate the cluster configuration
Step 5: Create the cluster
Step 6: Add a disk as CSV to store virtual machine data
Step 7: Create a highly available virtual machine
Step 8: Install the guest operating system on the virtual machine
Step 9: Test a planned failover
Step 10: Test an unplanned failover
Step 11: Modify the settings of a virtual machine
Step 12: Remove a virtual machine from a cluster
For details please refer to following link:
http://technet.microsoft.com/en-us//library/jj863389.aspx
Hope it helps
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.

Moving VMs from Standalone Hyper-V to Hyper-v Failover Cluster

Hello All.................I need to move Virtual Machines from Standalone Hyper-V based on Windows Server 2012 R2 to a Hyper-V Failover Cluster based on Windows Server 2012 R2.
- The VMs OS is Windows Server 2012 R2
- Applications installed on VMs are SCCM, SCOM, SharePoint, etc.
1. I am looking for a Checklist that I can run through and move them. To make sure I do not miss out anything.
2. Would a downtime be required in this scenario while the VM is being moved?
3. What requires special attention in this scenario?

Thanks for the reply.
So, I do not need to do anything and just simply add both the cluster and standalone into VMM and then simply use the Move option. Please, confirm if I have understood it correct.
Yes. But be carefull. First shut down your VM's
if possible and configure them in such a way they don't automatically start. If you install the SCVMM Agent, some Hyper-V related services are restarted, when some VMs start during that process you system may stall. I have seen this multipe times.
There is another dirty option that worked of us perfectly. Export the VMs. Then import those VMs to a local disk on one Hyper-V Server. Refresh the Hyper-V Server and Virtual Machines on that Hyper-V Server. Give it a few minutes. Then do
a Live Migration while at the same time makeing it "Highly Available" by moving it to your CSV. Works flawlessly. DO NOT IMPORT THE VMS TO YOUR CSV, otherwise you can't change it to "Highly Avaiable" unless you have
two CSVs. Importing it straight to a CSV does not make them Highly Available.
Boudewijn Plomp | BPMi Infrastructure & Security
This posting is provided "AS IS" with no warranties, and confers no rights. Please remember, if you see a post that helped you please click "Vote as Helpful", and if it answered your question, please click "Mark as Answer".

Hyper-V Failover Clustering MAC Address Question

Hello,
Can someone please explain how MAC address assignment works in a hyper-v cluster? I have a couple machines that need to have a static MAC address assigned and want to know how the cluster handles it when the VM is Live migrated to a new host. Thanks in advance.

Hi ice2921,
Yes, after export and import to another Hyper-V host, the dynamic MAC address of the VM changes
after export and import to another Hyper-V host, the dynamic MAC address of the VM changes, this is by design.
As Alexey offered article, to have a dedicated Mac Address for the VMs they should be set to static MAC address, it is normal the dynamic assign to vm when the all the Hyper-v
host as there own MAC address range , this is by design of Hyper V and failover clustering when using Dynamic MAC addresses for VMs.
If you are using 2008R2 Hyper-V failover and you found it often lost the network connection and configuration, please install the hotfix.
Reinstalled the integration services
The network connection of a running Hyper-V virtual machine may be lost under heavy outgoing network traffic on a computer that is running Windows Server 2008 R2 SP1
http://support.microsoft.com/kb/2263829
I’m glad to be of help to you!
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Guest cluster on Hyper-V failover cluster

I want to implement Hyper-V failover cluster on Windows Server 2012 R2. Then Install Windows 2003 R2 as Hyper-V guest OS.
Do you know whether Windows 2003 R2 guest cluster support on Hyper-V on Windows Server 2012 R2?

Hi steventsf,
Windows Server 2003 R2 with Service Pack 2 (SP2) is in the supported guest operation system list :
http://technet.microsoft.com/library/hh831531.aspx
The guest OS is independent of hyper-v host , I think windows server 2003 R2 SP2 guest cluster is a supported scenario .
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.

Moving Physical SQL Cluster into Virtual SQL Cluster based on Hyper-V Failover

Hello All............I have a SQL Cluster based on Physical Hardware that has Three-3 instances as well. I have setup a Hyper-V Failover Cluster (2012 R2) and have built Virtual/Guest SQL Cluster (2012 R2) upon it. Now, I intend to move
the instances/databases from Physical SQL Cluster to Virtual SQL Cluster.
1. Is this supported? If so, I would appreciate any guidance on it?
2. Is P2V of SQL Cluster supported in Hyper-V Failover Cluster based on Windows Server 2012 R2?

Hi Sir,
Please refer to the following blog regarding moving SCCVM SQL database to another SQL server:
http://blogs.technet.com/b/configurationmgr/archive/2013/04/02/how-to-move-the-configmgr-2012-site-database-to-a-new-sql-server.aspx
It is quoted from the similar thread :
https://social.technet.microsoft.com/Forums/en-US/a1558842-cdf5-4e5f-8f10-d660e96eae1b/migration-sql-for-sccm-2012?forum=configmanagermigration
But it seems that is a migration of system center production , I would suggest you to post the question to system center forum ：
https://social.technet.microsoft.com/Forums/en-US/home?forum=configmanagermigration%2Coperationsmanagergeneral&filter=alltypes&sort=lastpostdesc
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.

Heartbeat Network inside Hyper-V Failover Cluster

Dear All,
I need to build an SQL Server 2012 SP1 Two-node cluster inside Hyper-V Failover Cluster. There is only one virtual switch in the Hyper-V Failover Cluster environment which is being
used for communication to the outside world using VLAN Tagging. Now, since SQL Server 2012 Failover Cluster would require a heartbeat network as well and although possible to assign VLAN tag to the heartbeat adapter and use that for hearbeat, but since there
would not be any gateway on the heartbeat network, it would render the VLAN tagging useless, so is following plan good enough:
1. Create an Internal Virtual Switch on all nodes of the cluster with the same name
2. Link the heartbeat adapter of the virtual machines to the Internal Virtual Switch
Is it good enough? or is there any other better way?
Thanks in advance.

I am not an expert on this, but here is what I would do.
Create the VLAN and use that to keep the network setup as easy to understand as possible. Our Hyper-V cluster is only using IPv6 on the heartbeat network, and that is working like a charm. I would do the same inside the hyper-v hosts if I need to builld
a virtual cluster.
What is the reason for deploying a failover cluster for SQL inside Hyper-V? Wouldn't a log shipping "cluster" provide a more secure solution for your SQL?
/Martin
Exchange is a passion not just a collaboration software.

Removal of Node from Hyper-V Failover Cluster

Hello All....................I have a 8 node Hyper-V Failover Cluster based on Windows Server 2012 R2. I am facing some issues with one of the servers, so I have decided to take that node out of the Hyper-V Failover cluster. I would appreciate if someone
could share the steps that I should take to ensure smooth removal of node especially with respect to CSV Volume and Quorum. THanks.

Hi Sir ,
Please try the following command (before you do this please live migrate VMs to another nodes ):
Remove-ClusterNode –Name node4 -Force
For this command please refer to :
http://technet.microsoft.com/en-us/library/hh847251.aspx
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.

Requirements for similar hardware in a 2012 Hyper-V failover cluster?

Simple question:
How similar does the hardware have to be on the host servers in a Windows Server 2012 Hyper-V failover cluster?
We have 6 dell servers that we are hoping to use for building a Windows 2012 Hyper-V cluster.
As I recall from our existing 2-host Hyper-V cluster, which is running on 2008 R2, there are fairly harsh demands in the cluster validation wizard with regard to similarity of hardware. So I am wondering if it will work?
The servers in question are 3 x R620, 2 x T410 and 1 x T610 Dell servers. So 3 x 12th generation servers and 3 x 11th generation servers
The servers all use Intel CPUs:
R620: Xeon E5-2670/2680
T410/610: Xeon X5650
and broadcom NICs:
T610: Broadcom 5709c
2 x T410: Broadcom 5716c
3 x R620: Broadcom 5720
Windows 2012 is supported by Dell on all the servers.
Shared storage will be on an SMB3 file share.

Simple question:
How similar does the hardware have to be on the host servers in a Windows Server 2012 Hyper-V failover cluster?
We have 6 dell servers that we are hoping to use for building a Windows 2012 Hyper-V cluster.
As I recall from our existing 2-host Hyper-V cluster, which is running on 2008 R2, there are fairly harsh demands in the cluster validation wizard with regard to similarity of hardware. So I am wondering if it will work?
The servers in question are 3 x R620, 2 x T410 and 1 x T610 Dell servers. So 3 x 12th generation servers and 3 x 11th generation servers
The servers all use Intel CPUs:
R620: Xeon E5-2670/2680
T410/610: Xeon X5650
and broadcom NICs:
T610: Broadcom 5709c
2 x T410: Broadcom 5716c
3 x R620: Broadcom 5720
Windows 2012 is supported by Dell on all the servers.
Shared storage will be on an SMB3 file share.
You'll be fine with a listed config no need to have identical machines. The only thing I'd try to change is use the same NICs all-around if possible.
P.S. Make sure you understand SMB share is a single point of failure unless SoFS or "old skool" NAS failover is configured. But it adds latency so using shared storage
directly w/o a file transport is FASTER and CHEAPER.
StarWind iSCSI SAN & NAS

2 Node Hyper-V failover cluster with sql server

I have 2 IBM Servers with Server 2012 installed and both machines have SQL server express. Is it possible to create HYPER-V Failover between the 2 servers including the SQL SERVER Instance meaning if the main node fails the second server will take over.
The second will act as virtualized failover of the main node with failover instace to act as active to active approach.
I hope can someone give me an advice with my question.

I have 2 IBM Servers with Server 2012 installed and both machines have SQL server express. Is it possible to create HYPER-V Failover between the 2 servers including the SQL SERVER Instance meaning if the main node fails the second server will take over.
The second will act as virtualized failover of the main node with failover instace to act as active to active approach.
I hope can someone give me an advice with my question.
Sure you can do that. But it's a long story what's better SQL Server FCI or AlwaysOn. See:
FCI Vs. AlwaysOn
http://msdn.microsoft.com/en-us/library/ff929171.aspx
(biggest issue with AlwaysOn - it does require Enterprise license so is COSTY)
Good idea to ask here:
SQL Server High Availability and Disaster Recovery
http://social.technet.microsoft.com/Forums/sqlserver/en-us/home?forum=sqldisasterrecovery
In any case you'll need either physical or virtual shared storage. For FCI to host everything and witness disk and for AlwaysOn just for witness (AlwaysOn does replication between DAS on it's own).
Good luck :)
StarWind VSAN [Virtual SAN] clusters Hyper-V without SAS, Fibre Channel, SMB 3.0 or iSCSI, uses Ethernet to mirror internally mounted SATA disks between hosts.

Hyper-V Failover w/ Local Storage question

I'll also suggest option 3 - Replicating to an offsite service that can power up the VMs in the event of disaster.
Azure is a good bet. Especially when paired with System Center Data Protection Manager
Also Datto has a backup appliance with built in local virtualization and hybrid cloud storage with offsite virtualization.

Hi everyone,I have a question about Hyper-V Failover for a client of mine.He runs SQL (very small database roughly 3GB) and would like a MAXIMUM of 1-hour of downtime in the event of a failure.I'm thinking about a hyper-v scenario with Failover using local storage (he doesn't have the funds for shared storage).We will have 2 virtual servers: a DC and the sql server.Do I need 3rd party software to duplicate the local storage data across servers, or is this accomplished with the replication that occurs every 5 minutes in Hyper-V?High availability isn't necessary, but if I'm able to get him back up and running with minimal data loss in under an hour, he's going to be a happy camper.I've looked high and low for an answer to this, but seem to be getting mixed reviews.What do you guys think?On another note, those who care to answer:1)...
This topic first appeared in the Spiceworks Community

Very Strange Network Issue With Two Guests on 2012 R2 Hyper-V Failover Cluster

Hi all. We're having a odd issue with two guests on our 2012 R2 failover cluster.
In a nutshell, if we shutdown a particular server (I'll call it Server A) another totally different server (Server B) on the same node loses it's network connectivity to the domain. If we start server A back up, network connectivity returns on server B.
At first I thought server A might be running a service that was somehow linked to server B, so I decided to disable server A's NIC. Interestingly, that had no affect on server B's connectivity.
The next step I tried was pausing server A and again, no adverse affect on server B's connectivity.
Next step was to live migrate server A to another node. This action did
cause server B to lose its network connection.
One other clue is that if I ping server B from either of the Hyper-V hosts in the cluster, I never lose network connection to server B.
So I would suspect this is some network issue on the cluster, but I'm kind of at a loss where to go from here.
Has anyone seen this behavior before or does anyone have any troubleshooting suggestions I can try?
Thanks!
George Moore

Hi Sir,
I'v never seen this before .
>>Next step was to live migrate server A to another node. This action did
cause server B to lose its network connection.
They are connecting to same virtual switch ?
First please run cluster validation to check if there is any error .
If it is ok , please try the following items for troubleshooting :
1. shutdown serverA serverB
2. then add another virtual NIC for serverB
3. start server B check if the issue happens to both "old" and "new" virtual NIC .
In addition , you can live migrate both A and B to another node , then try to live migrate A to the original node .
If the issue persists , I would suggest you to remove that virtual switch on both nodes then re-create them .
Best Regards,
Elton Ji
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Hyper-V failover confusion

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