Configuring Pass-through Disks in Hyper-V

re: Configuring Pass-through Disks in Hyper-V

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re: Configuring Pass-through Disks in Hyper-V

Rajnish — Thu, 04 Apr 2013 08:11:38 GMT

Hi Chuck,

I have server (VM) having pass-through disk attached, this particular disk is giving error while accessing it "The operation can not be performed due to I/O device error.

can you help me in this to fix it.

Regards

rajnish

re: Configuring Pass-through Disks in Hyper-V

Jack — Thu, 17 Jan 2013 02:12:45 GMT

You da man Chuck. It took a while for me to find this. Thanks!

re: Configuring Pass-through Disks in Hyper-V

ajay — Wed, 01 Aug 2012 07:21:35 GMT

i have mapped one lun each to windows and linux virtual machines from windows8 hyper-v server and i am able to see the lun on windows VM but it is not detected in rhel VM.

please let me know the issue.

re: Configuring Pass-through Disks in Hyper-V

HP — Fri, 13 Jan 2012 18:40:51 GMT

Thanks for post. We are using pass-through disks quite a lot, but have had some issues with VMs mixing up the attached discs after reboot of the host. The luns/disks randomly change disk numbers in disk management after some reboots. As a result the VM's might have the wrong pass-through disk attached creating abvious problems using it even causing data corruption. We just attach a iscsi lun to the host, then take it offline (no initialization/online first). Then we attached it to a VM. It works fine, but sometimes we get the problem above after hyper-v svr reboot. Is the reason that we MUST make the disk online and initialize it before taking it offline and attach it to a VM as a pass-through disk?

re: Configuring Pass-through Disks in Hyper-V

Amol — Tue, 18 Oct 2011 01:38:22 GMT

What if we want to present a disk to the VM, the disk which has already been presented to the Host machine through a SAN management system.

Does that disk still need to be offline on the Host machine?

We want to use that disk to store data inside the VM.

re: Configuring Pass-through Disks in Hyper-V

Head — Fri, 03 Dec 2010 20:39:48 GMT

Glenn, yes, really you can transfer data this way. Not sure it's right way, but it works.

re: Configuring Pass-through Disks in Hyper-V

Glenn — Mon, 18 Oct 2010 06:13:55 GMT

Most of the examples I've seen is configuring a pass through disks with an empty physical drive, my question is can I conect a physical drive that has data through a pass through disks? The reason for doing this is to transfer the files from the physical drive to vhd.

re: Configuring Pass-through Disks in Hyper-V

Richard Artes — Fri, 15 Oct 2010 13:30:13 GMT

Only iSCSI is supported on pass-through disks with failover clustering. Fibre Channel is not supported with Failover clustering on pass-through disks. It doesn't work, gives an error when you failover! (Server 2008 R2).

So always do not use Phyiscal Disk option in your Hyper-V client if you want to failover correctly.

Richard Artes.

re: Configuring Pass-through Disks in Hyper-V

CHarvey — Thu, 02 Sep 2010 11:18:08 GMT

I am sitting on course The Implementing and Managing Windows Server 2008 HYper-V Course 6422A and the instructor is saying that only iSCSI storage is supported with pass-through disks , is this right as I thought it was any type of disk that the Hyper-V server sees as direct attached?