Hyper-V: MAC Address allocation and apparent network issues MAC collisions can cause

In a physical only world, you don’t usually have to worry about MAC addresses that much as each NIC vendor carves off a MAC address from their ranges which have been allocated to them. However, in a virtual environment, you have to be a little more careful, particularly if you are using dynamic MAC address…


Windows Server virtualization

…is here (nearly). I’ll provide more details over the coming days, but with WinHEC now upon us, the covers are lifted on both Windows Server virtualization and System Center Virtual Machine Manager (aka Carmine). For now, the best place to find info is on presspass. I’ve also now setup the Virtual Machine team blog empty right…


Does Hardware Assistance make a difference?

The simple answer is a definite yes. However, it’s sometimes useful to have a “finger in the air” gauge of how much. I therefore did some very unscientific measurements using my watch to compare timings for some basic functions. Of course, before reading any further, please read and understand the blog disclaimer. This is purely to give you some…


Virtual Server 2005 R2 SP1 FAQ#1: Hardware requirements

I’ve had numerous direct emails asking what are the requirements for hardware when running Virtual Server 2005 R2 SP1 Beta 1. Just to make this clear – even on hardware which does not have virtualization assistance from the processor, it runs just fine. It just means that you won’t see the performance improvements I spoke…


How to Enable Hardware Assisted Virtualization in VS2005R2 SP1 Beta

Once you install Virtual Server 2005 R2 SP1 Beta 1, you’ll notice a check box on the properties page for a virtual machine as shown below – it’s as simple as checking the box (on by default). Have fun – and remember, this is Beta code – only install it on your test machines. Cheers,John.


Virtual Server 2005 R2 SP1 Beta 1 download link and availability details

Although on the Windows virtualization team here, it’s heads down working on the next generation of virtual machine support to be built into Windows Longhorn server with a “hypervisor” architecture, we’re absolutely not sitting still on the Virtual Server 2005 R2 product which became free a couple of weeks back. There will be a couple…


Installing or Accessing VSMT help on a Windows XP machine.

I thought this was worth mentioning after I received an email today with a question about VSMT. I answered the email (hopefully with the correct answer!), but would have been able to give a more complete answer if I had had the VSMT help file to hand. With ADS 1.1, VSMT is bundled in the…


Virtual Server Cluster – Move workload on CPU spike

Here’s a good question emailed to me yesterday. If you seen the Virtual Server 2005 R2 Host Clustering demos during events such as IT Forum last year, in addition to the planned & unplanned failover as per my blogcasts a few months ago, we include MOM 2005 in the mix to monitor if the utilisation of…


Updated MOM Management Pack for Virtual Server 2005 R2 Released

A revised version of the MOM management pack for Virtual Server 2005 R2 was released late last week. It can be used against hosts running Virtual Server 2005 RTM and R2. OverviewThis Management Pack provides monitoring and reporting for the following scenarios: Virtual Server • Monitors Virtual Server service availability• Detects configuration errors• Detects critical…


NVRAM settings in Virtual Server 2005 R2

….so I have to thank my bosses boss for pointing this one out (and I guess this means I’ve also found out who the third reader of this blog is 🙂 ), but there’s also a little known method, SetConfigurationValue, in the Virtual Server 2005 R2 COM API. This is another way of solving yesterday’s problem…