How big should my OS drive be?

My name is Michael Champion and I've been working in support for more than 12 years here at Microsoft.  I have been asked by many customers "What is the recommended size for the OS partition for Windows Server?".  There are minimum recommendations in the technical documentation (and release notes), but those recommendations are more on…


CROSS POST: How Shared VHDX Works on Server 2012 R2

In the not far back point in time, there was a blog done by Matthew Walker that we felt needed to also be on the AskCore site as well due to the nature and the popularity of the article.  So we are going to cross post it here.  Please keep in mind that the latest…


Invitation to provide feedback through UserVoice

I am not sure if everyone is aware of UserVoice but I am here to tell you about it.  UserVoice is where you can provide feedback to the Microsoft Product Groups who are now monitoring these forums.  Do you have idea or suggestion on how to make Windows Server 2016 better or a feature you…

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Microsoft Ignite sessions dealing with what we do in AskCore

Early in the month of May, Microsoft held it's Ignite Conference (formally known as TechEd) in Chicago, Illinois.  This conference was a huge success with over 23,000 attendees.  There are a lot of new things coming out with Windows 10 and Windows Server 2016 over the next year.  I wanted to provide you some of…

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The Four Stages of NTFS File Growth, Part 2

A few years ago I wrote a blog entry entitled, “The Four Stages of NTFS File Growth”. This attempted to explain what happens to a file as it gains complexity. Complexity being akin to fragmentation. If you have not read the above mentioned blog entry, please do so now. This information will not make the…

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Deciphering Storport Traces 101

Welcome back to the CORE Team Blog — Paul Reynolds here. In previous blogs, I wrote about how to capture Storport traces in Windows 8 and Windows 2012. Please see: Tracing with Storport in Windows 2012 and Windows 8 with KB2819476 hotfix And Tracing with Storport in Windows 2012 and Windows 8 without KB2819476 hotfix…

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Is Offloaded Data Transfers (ODX) working?

Offloaded Data Transfers (ODX) was a new data transfer strategy that makes advancements in moving files.  Only storage devices that comply with the SPC4 and SBC3 specifications will work with this feature.  With this feature, copying files from one server to another is much quicker.  This feature is only available in Windows 8/2012 and above…

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2012R2 iSCSI Target Settings for Configuring a Specific Network

Let's say you have a 2012R2 iSCSI Target Server with multiple networks configured. We all know that iSCSI traffic should be on a separate network. So how do you go by configuring iSCSI to use a specific network on the target server? In previous version of Windows this was much easier to find since it…

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What's New in Defrag for Windows Server 2012/2012R2

Hello everyone, I am Palash Acharyya, Support Escalation Engineer with the Microsoft Platforms Core team. In the past decade, we have come a long way from Windows Server 2003 to all the way to Windows Server 2012R2. There has been a sea-change in the overall Operating System as a whole, and we have added/modified a…


I/O Performance impact of running Start-DedupJob with –Priority High

My name is Steven Andress and I am a Support Escalation Engineer with Microsoft’s Platforms Support Team.  This is a short blog post to alert you to a condition you might encounter when running a deduplication job using the Start-DedupJob PowerShell cmdlet.  Start-DedupJobhttp://technet.microsoft.com/en-us/library/hh848442.aspx Start-DedupJob [-Type] <Type> [[-Volume] <String[]> ] [-AsJob] [-CimSession <CimSession[]> ] [-Full] [-InputOutputThrottleLevel…