Hyper-V questions

Kari said:

Putting everything about VM optimization in one tutorial would be simply too much. I made this now, to start with: Hyper-V - Use Differencing Disks

Kari

That is pretty slick. I'll give it a try soon.

I think it was mentioned already in the thread (or else elsewhere) but IMO you're really better off using Remote Desktop for manipulating the VM versus using the native display in the Hyper-V VMM.
@Kari - re: rule of thumb of CPU:vCPU ratio 2:1 - is that physical core, or physical core + HT?

johngalt said:

@Kari - re: rule of thumb of CPU:vCPU ratio 2:1 - is that physical core, or physical core + HT?

On virtual machines I might run at the same time than other virtual machines, one vCPU per two host logical processors, in my case four vCPU per VM:



On virtual machines I allocate more vRAM and know I never run them with other virtual machines running at the same time, one vCPU per one host logical processor. In my case 8 vCPU.

Kari

johngalt said:

I think it was mentioned already in the thread (or else elsewhere) but IMO you're really better off using Remote Desktop for manipulating the VM versus using the native display in the Hyper-V VMM.
@Kari - re: rule of thumb of CPU:vCPU ratio 2:1 - is that physical core, or physical core + HT?

So I can start the VM, close the window then RDP into the VM to work with it? Have to give that a try and see how it feels as opposed to running it in a local window. Don't see the advantage at the moment but maybe once I've tried it I'll understand.

Okay, using RDT is the same as a local window, which is already a RDT as far as Hyper-V is concerned. The only difference I see so far is it's slower. Not bad though.

I like the fact that when I want to look at it I just open Network Connections, right click on the VM and select Connect with RDT and I'm there.

Bree said:

You don't even need to open the window in the first place. Select the VM in Hyper-V Manager and click the Start button near the bottom of the Actions pane on the right (or select Start from the Action menu).

NB: you must first run the VM and enable Remote Desktop in its settings before it will accept RDP connections.

Ah so the Connect is what opens the Window. Skip that and it just opens in the background. This is getting better and better.

jimbo45 said:

Hi there
@Ztruker

To prevent activation issues in future if moving / fiddling around with VM's ensure the UUID of the VM doesn't change -- kari can probably explain how to do it with VM's in HYPER-V --on VMWare you get a popup on first boot of a copied / moved VM giving you a choice of "I moved it" or "I copied it". Choose the "I moved it" option --this preserves the machine UUID so you won't get activation problems when moving / cloning a VM.

Cheers
jimbo

Thanks Jimbo. I think I'm done moving them but who knows. I've got everything moved from Oracle VB to Hyper-V. Only one was activated, the others are all custom builds for the shop which I've completed.

If I ever have to move one or more again I'll look into this.