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Question for "Hyper-V replica" and "replica server" RRS feed

  • Question

  • On the replica server, is it possible to have and operate other VMs, that are not replicas to existing VMs ?
    Wednesday, May 14, 2014 7:27 PM

Answers

  • Hello DimiterS,

    Yes, sure you can run VM workloads on both Hyper-V hosts which are participating in Hyper-V Replica and vice versa.

    For example, you can have DC01 on HV01 and DC02 on HV02 and then replicate DC01 to HV02 and DC02 to HV01.

    No, you cannot have replication from Hyper-V 2012 to Hyper-V 2012 R2, you need to maintain the same Windows Server version on the physical host.

    One advise, I would strongly recommend you to exclude the Paging File disk from replication, you can change the location of the System Page File inside the Guest OS to another disk/volume and then exclude it during the replication wizard, this will help to reduce the replicated traffic and I/O since the paging files are constantly changing. More information here.

    Hope this help.

    Regards,

    Charbel Nemnom

    MCSA, MCSE, MCS, MCITP

    Blog: www.charbelnemnom.com

    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.

    • Marked as answer by Elton_Ji Monday, May 19, 2014 4:45 AM
    Thursday, May 15, 2014 9:24 AM
  • Hi,

    first yes, mix it how you need it, you configure that on the VM Level.

    second, NO  it is not supported to have different Versions on the Hyper-V Host, so you have to stay in the same Version, some mix that with the possible Cross Version Live Migration, which enables you to live migrate VMs from 2012 to 2012R2 Hyper-V, only that way is supported.

    back to replica, you can replicate a VM between Standalone and Clusters and any combi, Standalone to Standalone, Cluster to Cluster, Cluster to Standalone.

    How you mix it depends a little bit on your DR plans, and some RTO and RPO Discussions.

    Some SMB Customers doing Replica between 2 Standalone Hosts and haveing 50% active on one side and 50% active on the other Side.

    but Keep in mind, it is not a HA Solution and also no Backup Solution :-), it is design for DR.

    • Marked as answer by Elton_Ji Monday, May 19, 2014 4:44 AM
    Wednesday, May 14, 2014 9:16 PM

All replies

  • the Replica Server is a normal Hyper-V Server, you can have aktive VMs and replica VMs on it.

    Take a Look in the  Capacity Planner for Hyper-V Replica

    http://www.microsoft.com/en-us/download/details.aspx?id=39057

    Wednesday, May 14, 2014 8:00 PM
  • Thank you.

    That means, it is possible to "cross" two Hyper-V servers - to be replica servers for each other

    ?

    And is it possible to have different OS - one to be Win2012, the other to be Win 2012 R2

    ?

    • Edited by DimiterS Wednesday, May 14, 2014 8:16 PM
    Wednesday, May 14, 2014 8:13 PM
  • Hi,

    first yes, mix it how you need it, you configure that on the VM Level.

    second, NO  it is not supported to have different Versions on the Hyper-V Host, so you have to stay in the same Version, some mix that with the possible Cross Version Live Migration, which enables you to live migrate VMs from 2012 to 2012R2 Hyper-V, only that way is supported.

    back to replica, you can replicate a VM between Standalone and Clusters and any combi, Standalone to Standalone, Cluster to Cluster, Cluster to Standalone.

    How you mix it depends a little bit on your DR plans, and some RTO and RPO Discussions.

    Some SMB Customers doing Replica between 2 Standalone Hosts and haveing 50% active on one side and 50% active on the other Side.

    but Keep in mind, it is not a HA Solution and also no Backup Solution :-), it is design for DR.

    • Marked as answer by Elton_Ji Monday, May 19, 2014 4:44 AM
    Wednesday, May 14, 2014 9:16 PM
  • Hello DimiterS,

    Yes, sure you can run VM workloads on both Hyper-V hosts which are participating in Hyper-V Replica and vice versa.

    For example, you can have DC01 on HV01 and DC02 on HV02 and then replicate DC01 to HV02 and DC02 to HV01.

    No, you cannot have replication from Hyper-V 2012 to Hyper-V 2012 R2, you need to maintain the same Windows Server version on the physical host.

    One advise, I would strongly recommend you to exclude the Paging File disk from replication, you can change the location of the System Page File inside the Guest OS to another disk/volume and then exclude it during the replication wizard, this will help to reduce the replicated traffic and I/O since the paging files are constantly changing. More information here.

    Hope this help.

    Regards,

    Charbel Nemnom

    MCSA, MCSE, MCS, MCITP

    Blog: www.charbelnemnom.com

    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.

    • Marked as answer by Elton_Ji Monday, May 19, 2014 4:45 AM
    Thursday, May 15, 2014 9:24 AM
  • Hello Dimiter,

    Any update?

    Is your question is answered?

    Thanks,

    Friday, May 16, 2014 6:57 PM
  • Many thanks for the help
    Saturday, June 7, 2014 11:37 AM