Windows Server 2008 R2
Parent memory reserve with dynamic memory
tweetmeme_url = 'http://blogs.msdn.com/b/virtual_pc_guy/archive/2010/09/03/parent-memory-reserve-with-dynamic-memory.aspx'; Most people I know who have spent a lot of time with Hyper-V have had the experience of accidentally taking too much memory away from the parent partition. This happens when they start too many virtual machines – and all of a sudden the performance and responsiveness of the... »
Guest Paging vs. Virtualization Paging and Negative Memory Availability
tweetmeme_url = 'http://blogs.msdn.com/b/virtual_pc_guy/archive/2010/09/02/guest-paging-vs-virtualization-paging-and-negative-memory-availability.aspx'; Jeff has discussed this at some length over on the virtualization team blog, but as a general rule of thumb we believe that it is much better to have paging occur inside the guest operating system rather than at the virtualization layer (if paging is needed). The simple... »
Looking at Dynamic Memory Performance Counters
tweetmeme_url = 'http://blogs.msdn.com/b/virtual_pc_guy/archive/2010/09/01/looking-at-dynamic-memory-performance-counters.aspx'; With Windows Server 2008 R2 SP1 we have added a number of new performance counters for dynamic memory. These counters allow you to get some extra insight into what is actually happening with memory on your Hyper-V server. The counters are grouped in two categories. First is “Hyper-V Dynamic... »
What is “Memory Availability”? (as reported by Dynamic Memory)
When you use dynamic memory with Hyper-V one of the obvious changes to the user interface is the addition of the “Memory Availability” column: This is actually a really useful figure to have handy. What memory available represents is the ratio of how much memory a virtual machine has – compared to how much memory... »
Hyper-V Hotfix Rollup now Available
tweetmeme_url = 'http://blogs.msdn.com/b/virtual_pc_guy/archive/2010/08/30/hyper-v-hotfix-rollup-now-available.aspx'; I am a bit late in getting this post up (due to being on the road at TechEd Australia & TechEd New Zealand); but last week we released a hotfix rollup package. This package includes the fixes for three of the five issues that I recently blogged about. ... »
Using PowerShell to find the virtual processor to logical processor ratio of Hyper-V
tweetmeme_url = 'http://blogs.msdn.com/b/virtual_pc_guy/archive/2010/08/13/using-powershell-to-find-the-virtual-processor-to-logical-processor-ratio-of-hyper-v.aspx'; For as long as I can remember – I have been talking to people about supported / optimal virtual processor to logical processor ratios with Hyper-V. Or – said with less technical jargon – how many virtual machines, with how many virtual processors, should you run on any given physical computer? ... »
What happens when you Sysprep a system running Hyper-V on Windows Server 2008 R2?
tweetmeme_url = 'http://blogs.msdn.com/b/virtual_pc_guy/archive/2010/08/12/what-happens-when-you-sysprep-a-system-running-hyper-v-on-windows-server-2008-r2.aspx'; I got asked this question a couple of weeks ago – and I did not know the answer. After a bit of investigation – I now know the answer – and thought I would take the time to share it with the world (if you do not know what Sysprep is –... »
Find out how much space is used / can be used by a virtual machines virtual hard disks [script]
![Find out how much space is used / can be used by a virtual machines virtual hard disks [script]](http://www.ccnetworking.com/wordpress/wp-content/themes/magazine-basic/thumb.php?src=http://blogs.msdn.com/aggbug.aspx?PostID=10047465&h=80&w=80&zc=1&q=80)
After writing the script to find all virtual hard disks associated with a virtual machine – the next logical step was to answer some questions about these virtual hard disks. The two obvious questions that I could think of were: How much space is this virtual machine currently using? How much space can this virtual... »
Find all virtual hard disks associated with a virtual machine [script]
![Find all virtual hard disks associated with a virtual machine [script]](http://www.ccnetworking.com/wordpress/wp-content/themes/magazine-basic/thumb.php?src=http://blogs.msdn.com/aggbug.aspx?PostID=10047463&h=80&w=80&zc=1&q=80)
This is something that sounds really simple to start with – but gets more complicated the more you think about it. The question is: how do you identify all virtual hard disks that are associated with a given virtual machine? Your first response might be “you open the virtual machine settings and have a look... »
Important Hotfixes for Hyper-V on Windows Server 2008 R2 [reminder]
![Important Hotfixes for Hyper-V on Windows Server 2008 R2 [reminder]](http://www.ccnetworking.com/wordpress/wp-content/themes/magazine-basic/thumb.php?src=http://blogs.msdn.com/cfs-file.ashx/__key/CommunityServer-Blogs-Components-WeblogFiles/00-00-00-41-22-metablogapi/7271.image_5F00_3.png&h=80&w=80&zc=1&q=80)
Last week I received the latest support call statistics for Hyper-V on Windows Server 2008 R2 – and it seems that a number of you are hitting problems that we know about – and have hotfixes “ready to go” for. So I would like to take a moment to bring these hotfixes to your... »
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