Read about and download the Off-line Virtual Machine Servicing Tool at: http://technet.microsoft.com/en-us/library/cc501231.aspx

(****Updated version supports SCVMM 2008 and Hyper-V****)

Taylor Brown's blog post explains away some of the confusion around backup/snapshot in Hyper-V: http://blogs.msdn.com/taylorb/archive/2008/08/20/backing-up-hyper-v-virtual-machines-using-windows-server-backup.aspx

See also:

How to enable Windows Server Backup support for the Hyper-V VSS Writer : http://blogs.technet.com/askcore/archive/2008/08/20/how-to-enable-windows-server-backup-support-for-the-hyper-v-vss-writer.aspx

Windows Server 2008 Backup and Recovery Overview : http://technet.microsoft.com/library/cc770593.aspx

Windows Server Backup Step-by-Step Guide for Windows Server 2008 : http://technet.microsoft.com/en-us/library/cc770266.aspx

Microsoft Data Protection Manager trial: http://technet.microsoft.com/dpm/bb727240.aspx

To find the list of supported server configs:
Go to http://www.windowsservercatalog.com/ .
Select the Certified Servers on the right hand side.
Select Windows Server 2008 (x64) on the left hand side.
Select Hyper-V on the left hand side.

The Performance Tuning Guidelines for Windows Server 2008 has been updated to include perf guidelines for virtualization servers: http://www.microsoft.com/whdc/system/sysperf/Perf_tun_srv.mspx

Joeelway's blog links to a handy Hyper-V RAM Calculator you can use to plan your Hyper-V deployment: http://cid-2095eac3772c41db.skydrive.live.com/self.aspx/Public/Hyper-V%20RAM%20Calculator.xls

• Webcast: http://msevents.microsoft.com/CUI/WebCastEventDetails.aspx?culture=en-US&EventID=1032364834&CountryCode=US
• Whitepaper: http://download.microsoft.com/download/3/B/5/3B51A025-7522-4686-AA16-8AE2E536034D/WS2008%20Multi%20Site%20Clustering.doc
• Jose Barreto's blog post: http://blogs.technet.com/josebda/archive/2008/02/14/storage-options-for-windows-server-2008-s-hyper-v.aspx
• Jeremy Hagen's blog post describes some implementation workarounds for shrinking VHD sizes: http://blogs.technet.com/tonyso/archive/2008/10/09/hyper-v-how-to-shrink-a-vhd-file.aspx
• Jeremy Hagen's blog post details some planning considerations for high availability VMs: http://blogs.technet.com/tonyso/archive/2008/10/10/hyper-v-how-to-plan-ha-vms.aspx

On September 8th 2008, Microsoft announced that Microsoft Hyper-V Server would be released for free. Learn how to download it today at: http://www.microsoft.com/servers/hyper-v-server/how-to-get.mspx

Microsoft Hyper-V Server 2008 Configuration Guide will provide you with all the information you need to setup and configure Hyper-V Server 2008. It covers setup up local administrator passwords, the new Hyper-V configuration tool (HVCONFIG) and remote management: http://www.microsoft.com/downloads/details.aspx?FamilyId=E1E111C9-FA69-4B4D-8963-1DD87804C04F

Microsoft Hyper-V Server 2008 FAQ: http://www.microsoft.com/servers/hyper-v-server/faq.mspx

Listen to a short podcast with Hyper-V GM Mike Neil: http://download.microsoft.com/download/3/8/0/38001862-0367-4986-b94b-032af340e7b1/MikeNeilPodcastGetVirtualNow.wma

Take a look at the Edge video: First Look: Hyper-V Server.

Making HVConfig work on a normal Server Core installation

Free VMC to Hyper-V Import Tool

Matthijs' blog blog post describes the VMC2HV tool you can use to only import your Virtual Server and Virtual PC VM configurations. You can adjust almost any setting before creating the VM in Hyper-V.
http://blogs.technet.com/matthts/archive/2008/09/12/vmc-to-hyper-v-import-tool-available.aspx

Migrating to Hyper-V from Virtual Server or Virtual PC - Tips and Suggestions
Sean's blog walks you through the important prep steps for migrating your VMs from VS or VPC to Hyper-V.
http://blogs.technet.com/askcore/archive/2008/09/19/migrating-to-hyper-v-from-virtual-server-or-virtual-pc-tips-and-suggestions.aspx

This update includes the fix for the Virtual Server 2005 R2 SP1 issue described in article 953482: http://support.microsoft.com/kb/953482.
The issue is seen after installing the update 948515 on a computer that is running Microsoft Virtual Server 2005 R2 Service Pack 1 (SP1). The user might experience problems while trying to mount Virtual Hard Disk (VHD) files by using the Vhdmount.exe tool. For example, on running the vhdmount /m vhd file command or the vhdmount /p vhd file command, the following error message may come:
The specified operation could not be completed as an unexpected error has occurred.
This issue occurs because the Vhdstor.sys driver is not successfully upgraded to version 1.1.623.0 after installing update 948515.
After installing this update, user will not encounter the aforementioned issue.

Download at: http://www.microsoft.com/downloads/details.aspx?FamilyID=886876b7-e17c-4429-85da-f623506c5f2

If you are using Server Core in Windows Server 2008, you'll know that there are always certain tasks you need to do upon installation to enable things like Activation, Firewall.

The Server Core Configurator is a collection of scripts which will help provision and configure a Base Windows 2008 Server Core installation, enableing you to do all those 'little jobs' via a GUI, quickly and easily!

http://www.codeplex.com/CoreConfig

Go to http://www.microsoft.com/Windowsserver2008/en/us/R2-Beta.aspx for the bits, reviewer's guide, relnotes and other info.

What’s in it for virtualization?

1. Live migration of Virtual machines

2. Hardware enhancements: Nested Page Tables (NPT) and Extended Page tables (EPT)

3. Hot add VHDs

4. Networking upgrades: TCP offload engines, Virtual machine device queues (VMDq), and Jumbo Frames.

5. Better power management

6. VDI Connection Broker

This clustering team blog post steps you through Deploying Cluster Shared Volumes (CSV) in Windows Server 2008 R2 Failover Clustering - with screenies!
http://blogs.msdn.com/clustering/archive/2009/02/19/9433146.aspx

You can find v1 of the Hyper-V FAQ at: http://technet.microsoft.com/en-us/library/dd744892(WS.10).aspx
Snapshot FAQ at: http://technet.microsoft.com/en-us/library/dd560637(WS.10).aspx

And there is a listing of TechResources by IT Pro task on the TechCenter page at: http://technet.microsoft.com/en-us/dd565807.aspx