PVSCSI Bug Causing Exchange 2010 Jetstress to Crash

A few weeks back I was called in to help a customer who was experiencing problems completing Jetstress testing for an Exchange 2010 deployment. It wasn’t an issue of Jetstress reporting failed tests. Rather, they were unable to get through most of their tests without the Jetstress application actually crashing (JetstressWin.exe has stopped working). They would see the following after…

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Windows 2012 Failover Clusters and vSphere 5.1

How many of you actually read through the release notes of a new vSphere release?  Ok, I know that Maish does.  If you read Maish’s post or read the vSphere 5.1 Release Notes you would see the following: Windows Server 2012 Failover Clustering is not supported If you try to create a cluster for Failover Clustering in Windows Server 2012,…

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Licensing SQL 2012 in a VM with Hyper-threading

When I talk to customers about running SQL in a virtual machine I often refer to the SQL 2012 Licensing Guide to make sure I have the latest information.  This document has changed quite a few times over the last year and I often find something new that I didn’t notice in the prior version (or simply wasn’t there). Last…

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Error 1711 When Upgrading vCenter to 5.1

I was recently going through the process of upgrading my home lab from vSphere 5.0 to 5.1.  Everything was going great until I got the following error: Error 1711. An error occurred while writing installation information to disk.  Check to make sure enough disk space is available, and click Retry, or Cancel to end the installation. I found a few…

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SQL 2012 AAG/FCI added to VMware “Supported Configurations” KB

Just a quick post to note that VMware has added SQL 2012 AlwaysOn Availability Groups and AlwaysOn Failover Cluster Instances to their “Microsoft Clustering on VMware vSphere: Guidelines for Supported Configurations” knowledgebase article.  This is a KB article that I refer to frequently when speaking with customers about virtualizing business critical applications and clustered servers.  As expected, SQL 2012 AAGs…

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New in vSphere 5.1–Support for five node Failover Clusters

As has been the case with the last few vSphere releases, VMware has crammed vSphere 5.1 full of new features and functionality. I won’t try to go into all of the details since there are many blog posts out there already. Since virtualizing business critical applications is near and dear to my heart, one of the changes that immediately jumped…

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Using PVSCSI Driver on Windows Server 2012 VMs

Are you looking to start testing Windows Server 2012 in your vSphere environment and want to utilize the PVSCSI driver for better potential disk performance and lower CPU utilization?  You may have noticed that the only PVSCSI drivers available for Windows stop at Windows 2008.  But will that work on your Windows 2012 VM? In short, it sure will!  I…

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Microsoft removes SVVP Support Policy Wizard..and I think it’s a good thing

Microsoft first released the Server Virtualization Validation Program back in 2008 to help validate their products running on server virtualization technologies (both Microsoft and 3rd party).  Followed soon after that release was a tool called the SVVP Support Policy Wizard which made it very easy to simply plug in your application, OS version, and desired hypervisor and out would come…

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2012 – The Year of SQL Virtualization

Those of you who follow me on Twitter have probably seen me say this a few times – 2012 will be the year of SQL virtualization, specifically SQL on vSphere.  I figured it was about time to back that up with some facts and some opinions on just why I am so adamant about that statement. I spend a lot…

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Microsoft Jetstress 2010 now supported in virtual machines

Microsoft announced on the Exchange Team blog today that they now support running Jetstress 2010 inside a virtual machine.  You can read more about it and a little bit of the background on this one at the Exchange Team blog post here. If you aren’t familiar with Jetstress, here’s a two second version:  Jetstress is a tool from Microsoft that…

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