Hyper-V replica over WAN

Hi,
Is there any formula/app for working out how many Hyper-V VM's can be replicated over a WAN connection.
I guess you need to take in to account:
WAN speed
Number of VM's to be replicated
Size of VMS
Number of replicas of each Server
Ect.
Cheers
DB

Hi,
You find the Capacity planning for Hyper-V Replica here:
http://www.microsoft.com/en-us/download/details.aspx?id=39057

Similar Messages

  • Hyper-V replica vs Shared Nothing Live Migration

      Shared Nothing Live Migration allows to transport your VM over the WAN without shutting it down (how much time it takes on io intensive vm is another story)
      Hyper-V replica does not allow to perform the DR switch without shutdown operation on primary site VM !
      why can't it take the VM live to the DR ?
      that's because if we use Shared Nothing across the WAN, we don't use the data that Hyper-V replica can and then it also breaks everything hyper-V replica does.
      Point is: how to take the VM to DR in running state, what is the best way to do that ?
    Shahid Roofi

    Hi Shahid,
    Hyper-V Replica is designed as a DR technology, not as a technique to move VMs. It assumes that should you require it, the source VM would probably be offline and therefore you would be powering up the passive copy from a previous point in time
    as its not a true synchronous replica copy. It does give you the added benefit to be able to run a planned failover which as you say, powers of the VM first, runs a final Sync then powers the new VM up. Obviously you cant have the duplicate copy of this VM
    running all the time at the remote site, otherwise you would have a split brain situation for network traffic.
    Like the live migration the shared nothing live migration is a technology aimed at moving a VM, but as you know offers the ability to do this without having shared storage and only requires a network connection. When initiated moves the whole
    VM, well copies the virtual drive and memory before sending machine writes to both, then only to the new VM when they both match. With regards to the speed, I assume you have the SNLM setup to compress data before sending across the wire?
    If you want a true live migration between remote sites, one way would be to have a SAN array between both sites synchronously replicating data, then stretch the Hyper-V cluster across both sites. Obviously this is a very expensive solution but perhaps
    the perfect scenario.
    Kind Regards
    Michael Coutanche
    Blog:   
    Twitter:   LinkedIn:
    Note: Posts are provided “AS IS” without warranty of any kind, either expressed or implied, including but not limited to the implied warranties of merchantability and/or fitness for a particular purpose.

  • Hyper-V Replica Capacity Planner stuck getting VM information

    I'm trying to use the Capacity Planner for Hyper-V replica tool to estimate requirements for a replica site.
    It keeps getting stuck "Getting the VM and VHD from primary site, this can take upto several minutes...". I've waited over an hour, and it still sits there.
    The primary site is a 3 node Hyper-V 2012R2 cluster. I have installed and configured the Hyper-V Replication Broker role on the cluster. For now, it's set to use HTTP without any certificates.
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    Any idea how to figure out why it is freezing? Have I missed configuring something important for the tool to run?

    Hi Grant,
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    The tool and documentation have been updated for Windows Server 2012 R2
    and can be download from here:
    http://www.microsoft.com/en-us/download/details.aspx?id=39057 
    Would you please update it and see if it helps.
    Best Regrds,
    Susie
    Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

  • Hyper-V Replication over Dedicated LAN and "is alive" checks over Corporate LAN

    I am testing Hyper-V replication to see if it will be a suitable replacement for the ArcServer RHA product.  One thing I am struggling with is configuring the replication to use the dedicated LAN, but still have the host servers verify over the corporate
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    I have seen the blogs on how to use a dedicated route and editing the hosts file to get replication to use the dedicated LAN, but that also changes the LAN in which the host servers communicate.  It seems to me that if the corporate LAN were to go down
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    Is it possible for the two items to be separated?  Can I tell Hyper-V to replicate using one specific IP destination on the dedicated LAN and have the replica server check to see if the master is live over the corporate LAN?

    Hi Telrick,
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    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.

  • Hyper-V Replica Doesn't Seem to Replicate Expanded VHDX File?

    I'm running Microsoft Windows Server 2012 R2 Essentials as a VM on Microsoft Hyper-V Server 2012 R2 (Server Core).  I am using Hyper-V replica and extended replication to copy the Essentials VM to two backup Hyper-V servers.  This has been working
    for months.
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    When I try and get replication to resume (from primary to secondary) I am prompted to resync which I have attempted many times. The primary creates a snapshot and then after a few moments the snapshot is merged back into the primary VM. But the VHDX on the
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    I haven't found any error messages using Server Manager to explain why the resync seems to fail.
    At one point I found I was able to resync from the secondary to the tertiary server.  I don't know what that actually accomplished, but both still have a 2 Tb VHDX instead of the 4 Tb that should now be available.
    Any ideas on how to get replica and extended replica to work without having to delete and start replication over from the beginning?
    Thanks for any assistance.
    Theokrat

    There was an error message that I'd overlooked and unfortunately this tells me I'll have to delete and restart replication from the beginning.
    Cannot perform operation for virtual machine 'Windows Essentials 2012 R2' as virtual size of one or more virtual hard disks are different between primary and Replica servers. Delete and re-enable replication. (Virtual machine ID xxxxxxx)
    Theokrat

  • Hyper-V Live Migration Compatibility with Hyper-V Replica/Hyper-V Recovery Manager

    Hi,
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    Manager?
    I have 2 Hyper-V clusters in my datacenter - both using CSVs on Fibre Channel arrays. These clusters where created and are managed using the same "System Center 2012 R2 VMM" installation. My goal it to eventually move one of these clusters to a remote
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    I manually configured Hyper-V Replica in the Fail Over Cluster Manager on both clusters and started replicating some VMs using Hyper-V
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    my VM or on Replication of this VM. Live migrations still occur successfully and replication seems to carry on without any issues.
    However, it now has me concern that Live Migration may one day occur and break replication of my VMs between both clusters.
    I have searched, and searched and searched, and I cannot find any mention in official or un-official Microsoft channels, on the compatibility of these two features. 
    I know vMware vSphere replication and vMotion are compatible with each otherhttp://pubs.vmware.com/vsphere-55/index.jsp?topic=%2Fcom.vmware.vsphere.replication_admin.doc%2FGUID-8006BF58-6FA8-4F02-AFB9-A6AC5CD73021.html.
    Please confirm to me: Are Hyper-V Live Migration and Hyper-V Replica compatible
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    If they are, any link to further documentation on configuring these services so that they work in a fully supported manner will be highly appreciated.
    D

    This can be considered as a minor GUI bug. 
    Let me explain. Live Migration and Hyper-V Replica is supported on both Windows Server 2012 and 2012 R2 Hyper-V.
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    If you try to live migrate a VM within Failover Cluster Manager, you will not get any message at all. But VMM will (as you can see), give you an
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    Intelligent placement (in VMM) is responsible for putting everything in your environment together to give you tips about where the VM best possible can run, and that is why we are seeing this message here.
    I have personally reported this as a bug. I will check on this one and get back to this thread.
    Update: just spoke to one of the PMs of HRM and they can confirm that live migration is supported - and should work in this context.
    Please see this thread as well: http://social.msdn.microsoft.com/Forums/windowsazure/en-US/29163570-22a6-4da4-b309-21878aeb8ff8/hyperv-live-migration-compatibility-with-hyperv-replicahyperv-recovery-manager?forum=hypervrecovmgr
    -kn
    Kristian (Virtualization and some coffee: http://kristiannese.blogspot.com )

  • Hyper-v Replica: Planned Failover from Cluster to another Cluster Failed

    Hi Guys,
    i have one issue and i cannot find a way to troubleshooting
    i Have one Primary Site running 8 nodes Hyper-v with Failover Cluster and Hyper-v Replica Broker confguration
    i have one Replica Site  running 8 nodes Hyper-v with Failover Cluster and Hyper-v Replica Broker
    Replica Broker Configuration:
    https://onedrive.live.com/redir?resid=45C59B28F67FC71C%212271
    both side are pinging and name resolution is ok
    all ports are open
    The Virtual Machine Replication is ok
    The Planned Failover cannot complete and show me this simple error
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    i have no message on event Viewer
    Error:
    https://onedrive.live.com/redir?resid=45C59B28F67FC71C%212270
    Planned Failover from Cluster (Primary site) to another Cluster (Replica site) with Replica
    Start Hyper-V Manager pr failover cluster console on the primary server and choose a virtual machine to fail over.
    1. Turn off the virtual machine that you want to fail over.
    2. Right-click the virtual machine, point to Replication, and then point to
    Planned Failover.
    3. Click Fail Over to actually transfer operations to the virtual machine on the Replica server.

    Hi Samuel,
    In the original post :
    Tests: 1 -
    Planned Failover from Cluster to StandAlone Hyper-v is ok
    Test: 2
    Planned Failover from Standalone hyper-v to Cluster is ok
    Test:3
    Planned Failover from Cluster (Primary site) to another Cluster (Replica site) with Replica
    There is no  standalone hyper-v to standalone hyper-v between two sites .
    After the last test , if they still can not do planned failover , maybe you can focus on network configuration .
    Best Regads
    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.

  • Sharing an iTunes Library over WAN?

    Sorry if this question has been asked before but my searching of the forum here has only seemed to turn up questions and anwswers on sharing over a local network. Here is my question.
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    Open AirPort Utility, select the AirPort Extreme, and click Manual Setup
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  • Server 2012: Enabling Hyper-V Replica Site to Site Failure

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    http://www.thomasmaurer.ch/2012/07/hyper-v-replica-the-game-changer/
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    Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Subscriber Support, contact [email protected] .

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    Since this discussion has now been resurrected...
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