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Windows Server 2008 R2 Thread, Hyper-V in Technical; Couple of questions about Hyper-V based on let's say 1 VM and 2 hosts and a SAN 1) Can the ...
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    Hyper-V

    Couple of questions about Hyper-V based on let's say 1 VM and 2 hosts and a SAN

    1) Can the 2 hosts work together on the same VM, or can a VM only be used on one host at a time?

    2) Host 1 is working on VM, but host 1 goes down. Can Hyper-V work so host 2 picks up VM and continues working as normal

    How does the whole VMM thing work? Does it need to be installed? Are the hosts reliant on this machine being turned on? If so, what happens when this VMM fails?

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    a vm can only be on one host at a time, if you use clustering then you can either failover manually without loss of service or if a host fails the other will restart the vm's on it. You can setup rules as to what happens when, so if you have non production servers they may not need to failover to leave room for other servers.

    Vmm is a way of managing the vm's, it comes on a 180 day trial you'll prob only need it for setting up your cluster.

    virtual boy explains here http://virtualboytv.com/servers.aspx

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    Hightower (28th January 2011)

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    you can have as many VM on the hyper V
    but why have 2 hosts doing the same job on 1 HV
    i would be more worried that the HV will go down.

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    zag
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    I just keep a copy of the VHD's offline on another server, copy them once a term.

    Pretty simple but it works. Just remember to write down the mac addresses and you can swap anytime.

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    Quote Originally Posted by zag View Post
    I just keep a copy of the VHD's offline on another server, copy them once a term.

    Pretty simple but it works. Just remember to write down the mac addresses and you can swap anytime.
    But then you are up to 6 or 7 weeks behind at the end of the term - that's a whole lot of data

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    zag
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    Quote Originally Posted by Hightower View Post
    But then you are up to 6 or 7 weeks behind at the end of the term - that's a whole lot of data
    I have daily data backups taken in the normal way.

    This is just really for server images and their configs although i do take a snapshot of the data as well. It provides great peace of mind this way.

    Only problem with this approach really is Sims when it gets an upgrade mid term.

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    i have a backup Power Script that exports one a week my HV VMs and emails me once there done. you coud export once a day. depeding on your VM it takes a wile. my FOG server takes over 3 hours. and it only has 9 images for all the Computers in the school over a GIG Network.

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    Alright - I have a bunch of questions about this still.

    Would anyone be willing to let me contact them through email to ask away? If so, please PM me with your address.

    Thanks

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    There's a free Microsoft eBook explaining how Hyper-V works, high availability etc see here

    Free Microsoft Ebooks: Windows 7, Server 2008 R2, Virtualization R2, Office 2010 - Virtually Yours.. - Site Home - TechNet Blogs

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    Hightower (31st January 2011)

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    Great resource @gshaw, and really liking what Hyper-V can do.

    Does anybody know how it handles a shutdown prompt from a UPS? Does it shutdown the VM/transfer the VM to another physical box before powering down?

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    it shuts down and closes the vms as per their settings, Which are either turn off, save or shutdown. Neater way is to ask the ups to execute a ps script. Our servers are all on different up's so as soon as any one has aproblem it executes a script which closes down virtual machines first, then physical machines, leaving the most important ones till last.

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    Hightower (1st February 2011)

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    Quote Originally Posted by strawberry View Post
    it shuts down and closes the vms as per their settings, Which are either turn off, save or shutdown. Neater way is to ask the ups to execute a ps script. Our servers are all on different up's so as soon as any one has aproblem it executes a script which closes down virtual machines first, then physical machines, leaving the most important ones till last.
    And I'm guessing it would be easy to modify this script to tell it to run the VM from a different physical box?

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    Quote Originally Posted by Hightower View Post
    Does anybody know how it handles a shutdown prompt from a UPS? Does it shutdown the VM/transfer the VM to another physical box before powering down?
    You need Clustering and shared storage to do live migrations...

    APC do a Hyper-V version of powerchute to handle their UPS's but it costs £78 inc VAT - I bought it last week but have not tried to set it up yet....

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    yup, a ps script to move vms in a cluster is easy peasy. So you could adapt it to live migrate all your critical vms to one node.

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    Microsoft recommend that a physical DC is running, and that virtualised servers are ran as member servers. As in my diagram here:

    MS Recommendation.png

    We want to run all our DC's as virtualised servers (otherwise what's the point of virtualising them in a failover way as we could lose the physical DC and be screwed) as in this diagram. Is this actually possible? Does anyone have their setup similar to this?

    What I want to do.png

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