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Microsoft Windows Server 2008 R2 SP1 provides ongoing improvements to the Windows Operating System (OS), by including previous updates delivered over Windows. Update Center for Microsoft SQL Server. Find and manage updates in one place for your SQL Server Products. Use the RSS feed on this page with Microsoft Update to automatically receive information about updates and to download the updates. With the release of Service Pack 1 for Windows Server 2008 R2 a number of you have asked about Service Pack 1 for the standalone Microsoft Hyper-V Server 2008 R2, and whether the new capabilities. SQL Server 2008 R2 Service Pack 3 (SP3) is now available for download. SQL Server 2008 R2 service packs are cumulative and can be used to upgrade all releases of SQL Server 2008 R2 to Service Pack 3.
I'm planning of upgrading my physical server nodes to the latest service pack for Server 2008 R2.
2008 R2 Service Pack Download
In order to do this with as little downtime, I'm going to live migrate all VM's on one node to another so I can do the upgrade and then live migrate them back.
My question is whether the VM's will work on an upgraded service pack once they have been migrated over.
stead1984stead19842 Answers
Live Migrating from one version of Windows to another (even just a service pack) is not a good idea™.
When upgrading a cluster you should shutdown the cluster services, upgrade, then start everything back up. In the case of Hyper-V VMs, you should do an actual shutdown (or turn off), not hibernate/save-state/etc.
SP1 is still in Beta, and I've experience a bit of strangeness in my test systems; I would highly recommend you wait for the RTM.
Chris SChris S2008 R2 Service Pack
My question is whether the VM's will work on an upgraded service pack once they have been migrated over.
You might find you need to update the integration components in each guest (and might have a performance reduction until you do).
But, SP1 for Windows 2008 R2 is currently in beta test, expected to be released (alongside Windows 7 SP1) in the first half of next year. If you are concerned about uptime you should not be running test software unless you have no choice.
EDIT, 2010-10-26: MS has just released release candidates of Windows 7 SP1 and Server 2008 R2 today: http://blogs.technet.com/b/windowsserver/archive/2010/10/26/service-pack-1-release-candidate-now-available.aspx