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Assign Pass-through or Physical Disk to Hyper-v Virtual Machine

Posted by Brajesh Panda on April 20, 2011

To assign a pass-through disk to your hyper-v virtual machine you must have a free drive/disk allocated to your hyper-v host. It can be a local drive or SAN LUN. Just to note if you have a hyper-v cluster & you are assigning pass-through disks to hosted virtual machines there are some extra steps you have to perform. I will touch upon those steps in another article.

In below picture I have assigned a new drive to my hyper-v server. And I will assign the same to my virtual machine as a pass-through physical disk.

  • Right click “Initialize the Disk”, you may like to select GPT Style for Large partition.

  • Right click & bring the disk to offline state

  • Shutdown the VM where you like to add the Pass-through Disk.
  • Go to Virtual Machine Settings, Select Disk Controller & Add HDD, Select “Physical Disk” radio button, Drop down & select the disk.

  • Start Virtual Machine & Open Disk Management tool, you will able to see Online New Drive. Below picture refer to Disk 1. Now you can create partition & start using them.

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3 Responses to “Assign Pass-through or Physical Disk to Hyper-v Virtual Machine”

  1. Brian Williams said

    Should the passthrough disk be added via “IDE Controller 0” or via “SCSI Controller.” We’re looking to attach a passthrough disk via a Dell H700 Raid Controller. My hunch is IDE Controller 0 being that our Raid 1 partition hosting the guest OS virtual machine is on IDE Controller 0, so why would the Raid 1 passthrough disk on the same H700 Raid Controller being any different? Thoughts, or clarification as to why/when you’d attach the disk via the SCSI Controller option. Thank you in advance.

  2. Passthrough disk provide better performance for I\O intensive applications – however there are some limitation/coplexities around the same. Here is a nice discussion around the same stuff ; http://social.technet.microsoft.com/Forums/en/winserverhyperv/thread/ffc967bb-7876-4381-b8eb-4540b56f18be

  3. nexus 4 price…

    […]Assign Pass-through or Physical Disk to Hyper-v Virtual Machine « TechOnTip Weblog[…]…

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