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Imal UpalakshithaFlag for Sri Lanka

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is it better to install hyper-V vms on a separate hard drive for perfomance

we are going to add a new server 2008 r2 domain controller to a new enviornment.server has raid 5.
Can we install hyper-V Guest vms on same raid 5 which holds server 2008 R2 host OS or Do I need separate hard drive set ?
Will it reduce whole server's peformance if I install on same hard drive set ?
Can I use same R2 lisence in hyper-V guest vms?
What are the best backup plans for hyper-V vms?
Also we are going to instal Remote App TS server as a hyper-V vm.is it a better choice ?
Any help will be greatly appreciated.
Thanks
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Darius Ghassem
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as you mention i should install R2 host server with out services.then AD DS DC should be a vm too ?
Then another vm for remote app ?
If physical server installs a role other than hyper-V  like AD DS DC is a lisening problem ?
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I would install Domain Controller services within a VM.

Another VM for Remote App

You will not have listening problems but you would be in violation of Microsoft Licensing. With AD you could have some DNS issues since you need to use multiple NICs but overall it is a best practice
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aleghart: has mentioned I can have 1 vm with Windows Server 2008 R2 Standard license.
but spaperov: has mentioned I can have up to 2 vms with Windows Server 2008 R2 Standard license.
also
You can use Microsoft Hyper-V Server 2008 R2 as pure hypervisor (without OS) and run up to 2 virtual machines with Windows Server 2008 R2 Standard license and up to 5 with the enterprise license. Microsoft Hyper-V Server 2008 R2 doesn’t require an OS license.
pls kindly explain me these
thanks so much
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You can NOT run two virtual machines with Standard edition you can only run one. Enterprise you can only run four. Please read link I posted in first post explains licensing
Everybody greatly helped me.thanks for all. I like to end up this. but I'll need further more assistance.
Is Microsoft Hyper-V Server 2008 R2  betther than Citrix Xenserver & vMware Esxi ?
thanks very very much ....
I may be biased here, but I'd always prefer VMware. The name ESXi is being replaced by VMware vSphere Hypervisor, by the way...

In my opinion VMware has been the virtualization leader leader and it has an edge over the others (Some features which only just have been added by m$ with the last SP1 for their OS have been long in use by ESXi, like dynamic memory use, which means that if a VM  doesn't currently use all the RAM assigned to it, that can be used by another VM, which reduces the overall hardware requirements). Apart from that it has good management tools available.
Hi,
I think it's always good to try to separate resources into groups.
So if you have several large VMs with active I/O, it makes sense to put them on separate drives.
Sure a RAID is good but it may be better to have them on separate drives/arrays instead if they are really very active on the disk