Today we released a fix for to resolve an issue that can lead to guest VM’s crashing after a live migration.  This issue only impacted virtual machines that where utilizing virtual SCSI controllers and was only seen under some specific stress conditions...

The SQL CAT team has published a new whitepaper regarding dynamic memory best practices with Hyper-V…  If your virtualizing SQL I would highly recommend taking a look! Summary: Memory is a critical resource to Microsoft SQL Server workloads, especially...

If you are running a cluster with Windows Server 2008 R2 SP1 and three or more nodes you should install this KB. KB Link: http://support.microsoft.com/kb/2531907 Symptoms Consider the following scenario: You configure a failover cluster...

The recent Free Online Class - Microsoft Virtualization for VMware Professionals was a hit – I head it had one of the highest attendance levels ever… The content from that course is not available online. Announcing Microsoft Virtualization Jump Start...

Symon Perriman, formally from the Windows Clustering team and now a technical evangelist is going to be putting on a free tanning class on March 29-31, 2010 from 10:00am-4:00pm PDT .  Below are the full details of the class for any that are interested...

Service Pack 1 for Windows Server 2008 R2 and Windows 7 has officially shipped today.  For Hyper-V this brings some great new features such as dynamic memory and RemoteFX as well as many other minor feature improvements, bug fixes and performance...

A new whitepaper detailing high performance SQL workloads running in Hyper-V R2 virtual machines.  The paper can be downloaded here...   Below are a few highlights/examples from the paper. Dedicated Passthough LUN’s vs VHD’s Figure 3: I/O and...

So here’s the scenario you need or want to figure out which LUN is which on your cluster… On Tuesday I published part 1 where I utilized Get-ClusterParameter and the DiskUniqueIds property to enumerate LUN information for cluster storage, in part 2 I...

So here’s the scenario you need or want to figure out which LUN is which on your cluster… Yesterday I posted a script which used Get-ClusterParameter and the Physical Disk Private Properties to gather information on the storage being used...

So here’s the scenario you need or want to figure out which LUN is which on your cluster…  Well if you just use the Get-ClusterSharedVolume cmdlet it won’t get you very far…  However there’s another cmdlet Get-ClusterParameter that will give...

Last week was TechEd 2010 held in New Orleans, it was a great conference with over 10,000 attendees (speakers, exhibitors, attendees combined).  It was also a very very busy week – between working at our Microsoft Virtualization booth, presenting...

  Ever since Hyper-V’s first beta I’ve had people ask about the ability to write there own custom interface to replace VMConnect.  Some wanted a windows application other’s wanted to write a web application.  The goal’s varied from wanting...

I’ve been waiting and waiting to post this and today I can… Today we officially announced Windows Server 2008 R2 service pack 1 – with service pack 1 we will be releasing two great features for Hyper-V.  The first is Dynamic Memory which allows virtual...

It must be white paper week :) – today we posted a great document discussing virtual hard disk (VHD) performance with Windows Server 2008/Microsoft Hyper-V and Windows Server 2008 R2/Microsoft Hyper-V R2.  It’s about 35 pages long and goes into great...

Today we released a great new document discussing requirements, recommendations and options for configuring networking when leveraging live migration.   http://technet.microsoft.com/en-us/library/ff428137(WS.10).aspx Hyper-V: Live Migration Network...

So you want to use passthough disks with Hyper-V cool – but how do you script attaching them?  Well here’s your answer…  But first you need to decide if you are going to attach them to the virtual IDE controller or the virtual SCSI controller...

If your running System Center Virtual Machine Manager (SCVMM) you should take a look at KB 962941 .  The KB describes and links to all of the recommended Windows hotfixes, SCVMM hotfixes and Hyper-V server hotfixes that are important for SCVMM functionality...

I think it might be best to start at ground zero with this topic and explain what a snapshot really is and how it work’s (if you already know skip a head…).  Hyper-V introduced a new feature called a snapshot – snapshots allow you to capture and...

Virtualization Review posted the results of a performance shootout between Microsoft Hyper-V, VMware ESX, and Citrix XenServer…  The launched three tests against the various platforms.  First was a small number of heavy workload systems, ...

In the coming days/weeks some of you may see some new errors from Hyper-V.  The first is an error when you try and use VMConnect or SCVMM to connect to a running virtual machine – the error is “ Cannot connect to the virtual machine because the authentication...

Updated 2/23 – Added VHD File Size and Fixed a Few Bugs. This is a follow up on my previous post on Hyper-V WMI: What VHD’s/Physical Disks Are Associated With a Virtual Machine? .  I had been getting questions about how to better identify what disks...

Last night Mike Neil posted to the Virtualization Team Blog regarding a new agreement between Microsoft and Red Hat to bring Red Hat guest support to Hyper-V.  Take a look at Mike’s full blog post Microsoft and Red Hat Cooperative Technical Support...

The Microsoft Hyper-V Server 2008 R2 Beta has been posted on the download center along with an overview document and a setup and configuration guide. Please note that all features, support, configuration etc… is subject to change as this is a beta ...

If you are backing up your Hyper-V virtual machines using our VSS writer (backing up the physical server) you should be aware of a new Hotfix ( KB959962 ) we released today that addresses three issues.  Issue 1 If you back up a Hyper-V virtual machine...

The Hyper-V best practice in traditional production environments is that any physical network interface used by guest virtual machines is dedicated and isolated to guest only traffic and not shared with the management operating system (host). This recommendation...