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Hyper V backing up inside a VM and outside in Hyper V space

Hi

Im looking for advice on how to backup Hyper V Server VM's and also what way to use the usb devices to backup inside VM's using windows backup do you pass through the whole usb device to the vm and then use another external disk to backup the hyper v environment?

Thanks
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nostrasystems
Asked:
nostrasystems
1 Solution
 
RobinHumanCommented:
You should be able to back them up just as you would a physical machine; alternatively, you can take snapshots of the machine.
with regard to USB devices, hypervisor does not support usb pass-through you will need a 3rd-party utility to connect to a physical usb port on the host machine (something like USB over ethernet by Fabula Tech) to a virtual usb port on the VM - once you have established this, you can access the usb device as normal.
Hope this helps
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nostrasystemsAuthor Commented:
Hi

If im using hyper v server (core no gui) do i need to install that software in the core will it accept this software installed on the core so that i can pass through the usb device?

"something like USB over ethernet by Fabula Tech"
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RobinHumanCommented:
the usb over ethernet software has a server component, which is installed on the host server, and a client component which is installed on the VM - this allows a "pass-through" of the physical usb port to a virtual one created via an ethernet connection - sort of like converting a usb to an NIC - should work fine on core
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nostrasystemsAuthor Commented:
Have u tried it on core or should no third party software be installed on core?

Dont wanna mess up the Hypervisor.
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nostrasystemsAuthor Commented:
also if anyone can answer this can u just plug out a usb disk from server core without any damage to the usb disk do you have to eject it in any way?
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RobinHumanCommented:
I Have to say that ours is full version and I haven't tried it in core, but as I understand it, you install the optional wow64 32-bit support for core, and you should be ok. Try mailing their support ( support at fabulatech dot com ) for more info.
There is no issue with hotplugging / unplugging usb devices in server 2008 - usb devices were designed to be hot-pluggable, and server 2008 is fine with this (we have done this regularly with no issues)
hope this helps

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nostrasystemsAuthor Commented:
how do i install this on server core wow64 32-bit support ?
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nostrasystemsAuthor Commented:
"I Have to say that ours is full version"

have you found a performance issues with using hyper v in full install, i see online disk access is ment to be poor compared to a core install?
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RobinHumanCommented:
Have no issues at all; running on a low-end server, and still performing better than some of our dedicated high-spec physical servers... (but then they are running server2003..)


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nostrasystemsAuthor Commented:
how do u automate snapshots and then do u just include teh snapshot folder in the backup?
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StormRavenCommented:
Aaaaactually... there's an easy way to work this without any 3rd party software.

The USB device (lets say an external HDD) has to be "Offline" on the physical machine.  For instance, go to Disk Management on the physical machine and set the usb drive to offline.  After a few mins go into Hyper-V manager and edit the settings of your virtual machine.  Under an IDE controller, add a new hard drive.  You'll now note that you can select a physical hard disk and select the USB device.

Unfortunately you can't have it online on both physical -and- virtual machines simultaneously, but since I only need to access the particular devices in the virtual machine it doesn't matter anyway.

Hope this helps.
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humphrey06Commented:
I actually tried this and it initially worked.  However, when I removed the USB drive from the VM, plugged it into another computer, copied new data to it, then replugged the USB back into the VM, the new data is not seen and in fact the drive can no longer be browsed from the VM computer.  Having to go through all of the steps everytime you connected the USB for daily backups would not be pratical.

Am I doing something wrong or am I missing a step?

Thanks!
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