06 septembre 2010

Parent memory reserve with dynamic memory

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 parent partition goes down significantly. The response from people who hit this is usually to stop the last virtual machine that they started, to reduce its memory, and then start it up again. This solution has worked in the past – but is no longer an... [Lire la suite]
Posté par jcdemarque à 14:19 - - Permalien [#]
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03 septembre 2010

Guest Paging vs. Virtualization Paging and Negative Memory Availability

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 reason for this is that the guest operating system has far better understanding of which are the best sections of memory to page out – where as all the virtualization layer can do is to guess at what should be paged out. In my recent demonstrations of dynamic... [Lire la suite]
Posté par jcdemarque à 18:56 - - Permalien [#]
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31 août 2010

Hyper-V Hotfix Rollup now Available

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.  The specific issues that are addressed are: KB Number: KB975530 Title:Stop error message on an Intel Xeon 5500 series processor-based computer that is running Windows Server 2008 R2 and that has the Hyper-V role installed: "0x00000101 - CLOCK_WATCHDOG_TIMEOUT"... [Lire la suite]
Posté par jcdemarque à 22:23 - - Permalien [#]
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20 août 2010

What happens when you Sysprep a system running Hyper-V on Windows Server 2008 R2?

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 – go and read this first).  The short answer is: Everything just works. The long answer is as follows: Prior to Window Server 2008 R2 (namely in Windows Server 2008) you could run into a couple of problems.  In Windows Server 2008 R2 we have implemented a Sysprep provider to ensure... [Lire la suite]
Posté par jcdemarque à 10:46 - - Permalien [#]
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12 août 2010

Guide pas à pas : mise en œuvre de RemoteFX dans un environnement de machines virtuelles (VDI)

c’est ici http://blogs.technet.com/b/fabricem_blogs/archive/2010/07/28/guide-pas-224-pas-mise-en-uvre-de-remotefx-dans-un-environnement-de-machines-virtuelles-vdi.aspx http://blogs.technet.com/b/windows7/archive/2010/07/28/guide-pas-224-pas-mise-en-uvre-de-remotefx-dans-un-environnement-de-machines-virtuelles-vdi.aspx
Posté par jcdemarque à 22:35 - - Permalien [#]
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12 août 2010

Important Hotfixes for Hyper-V on Windows Server 2008 R2 [reminder]

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 attention.  The first three are system crashes that are caused by processor erratum that were discovered after Hyper-V on Windows Server 2008 R2 shipped: KB Number: KB975530 Title: Stop error message on an Intel Xeon 5500 series processor-based... [Lire la suite]
Posté par jcdemarque à 10:49 - - Permalien [#]
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12 août 2010

Six dossiers complets sur la fonctionnalité Dynamic Memory du SP1 de 2008 R2

C’est certainement la fonctionnalité qui fait couler le plus d’encre lorsque l’on évoque le futur Service Pack 1 pour Windows Server 2008 R2. En effet ce prochain SP très orienté virtualisation va apporter un grand changement dans Hyper-V puisqu’il va permettre l’allocation dynamique de mémoire aux machines virtuelles. Pour rappel, il va désormais être possible d’allouer non plus une taille fixe de RAM nécessaire à votre VM mais une fourchette, allant du minimum requis pour démarrer cette VM à la quantité maximal de RAM qu’elle... [Lire la suite]
Posté par jcdemarque à 10:22 - - Permalien [#]
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21 juillet 2010

Dynamic Memory Beta – Supported Guest Operating systems

At TechEd this year we announced that dynamic memory would be supported for virtual machines that were running the following guest operating systems: Windows Server 2003 Web, Standard, Enterprise & Datacenter (32-bit and 64-bit) Windows Server 2003 R2 Web, Standard, Enterprise & Datacenter (32-bit and 64-bit) Windows Server 2008 Web, Standard, Enterprise & Datacenter (32-bit and 64-bit) Windows Server 2008 R2 Web, Standard, Enterprise & Datacenter (64-bit) Windows Vista Enterprise & Ultimate (32-bit... [Lire la suite]
Posté par jcdemarque à 10:53 - - Permalien [#]
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20 juillet 2010

Download beta of Windows Server 2008 R2 sp1

Over at the Windows Server Division blog, Oliver says the beta is available to download. Oliver focuses on Windows Server 2008 R2 sp1, but Windows 7 sp1 beta is also available. All of this was announced today at our Worldwide Partner Conference in Washington, D.C. Here's an excerpt from Oliver's post: The two most important developments in SP1 for Windows Server 2008 R2 are: Dynamic memory lets Hyper-V administrators pool available memory on a physical host and dynamically distribute it to any virtual machine(s) running on... [Lire la suite]
Posté par jcdemarque à 22:08 - - Permalien [#]
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17 juin 2010

Hotfix: Hyper-V backup can cause slow system boot / large registry files

A while ago I made an open offer to people to contact me if they had experienced issues using Hyper-V backup.  A number of you contacted me with reports of large registry files in the parent partition – that would slow down system boot over time. Well, after a lot of investigation we have figured out the cause and a hotfix is now available.  You can download it from here: http://support.microsoft.com/kb/982210 I recommend that if you are using backup regularly on Hyper-V that you install this hotfix. Note – that... [Lire la suite]
Posté par jcdemarque à 19:49 - - Permalien [#]
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