Sunday, August 26, 2012

Powershell to choose drive letter


Introduction
If you are using a graphical user interface in windows server 2012, findings a right driver letter it might be easier as the drive letter won't be exceeding and it can be count. 

But if you are using a core system, have ever you think how you can achived? You might think to use a command to get-disk and check the volume one by one or other method.

Do you know that there is one useful command which you can use which is Get-AvailableDriveLetter and by doing this, it will show you a list of drive letter you can use.

By using an another parameter which is Get-AvailableDriveLetter -ReturnFirstletterOnly you can get the the first assign letter. This is just a small trick you can play with. But in the actual environment, you might think a lot more to choose a meaningful drive letter for your application.

Summary
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Saturday, August 25, 2012

Windows Server 2012 Virtual labs


Introduction

Windows Server 2012 which also known as Windows Server 8 going to be released on September 4 this year. While if you are new to it, I would suggest you guys go ahead and play with the lab link as per below.

Friday, August 24, 2012

Tools for Troubleshooting Storage Spaces


Introduction
Working on a new type of technologies sometime it could be scary as you might not sure what would happen and what could be the best way to deal with it.

The storage spaces failure can be category into 2, which the first on would be the administrative failure and the 2nd part would be maintenance failure. What it is all about?

Wednesday, August 22, 2012

Provisioning type in Storage Spaces



Introduction
As I recall, the first time when I use thin provisioning it was in VMware environment.Base on the comment and feedback during my time, thin provisioning it doesn't give a good performance, as it contain overhead. The first overhead would be the virtual disk expanding and it write on the physical disk. The 2nd would be the disk write inside the virtual disk.

As for now, everyone is using thin disk provisioning for virtualization. But do you still believe those overhead is still exists or vice versa?

Monday, August 20, 2012

Windows Server 2012 with 4 GUI option



Introduction
Since last year, I have show 2 steps of removing gui via powershell and server manager at http://www.wongchonkit.com/2011/10/removing-adding-gui-from-windows-server.html. In the latest revision, Microsoft has made it super easy to switch between the layer. You can read more from the following link http://blogs.technet.com/b/yungchou/archive/2012/07/18/windows-server-2012-installation-options.aspx

Switching method
Now we can convert Full installations of Windows Server 2012 and MinShell installations of Windows Server 2012 to Server Core with just one line of PowerShell:
Uninstall-WindowsFeature Server-Gui-Mgmt-Infra -Restart

To convert a Full installation of Windows Server 2012 to MinShell, run the following PowerShell command:
Uninstall-WindowsFeature Server-Gui-Shell –Restart

To convert from Server Core to MinShell, all you need to do is install the Graphical Management Tools and Infrastructure:

Install-WindowsFeature Server-Gui-Mgmt-Infra -Restart
  
To go from a Server Core installation of Windows Server 2012 or a MinShell installation of Windows Server 2012 to a Full Installation, simply add the Server Graphical Shell with the following command:
Install-WindowsFeature Server-Gui-Shell –Restart


Summary
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Sunday, August 19, 2012

No more metro for Microsoft

Introduction
Privacy and infringement always become a top concern for providers.For developers you might want to read the following which was posted by Janet. I. Tu

Saturday, August 18, 2012

Windows Server 2012 Licensing


Introduction
In a couple of few month, Windows Server 2012 will be available to the consumer for production usage. But however, do you know what are the changes in Windows Server 2012 licensing?. In the previous version, which is on windows server 2008 R2, we do have web, standard, enterprise and datacenter. 

The new release will have some changes, do have a look in the table below. As you can see there are no longer web version and also enterprise version.
 For more information you may click here for further information.

Summary
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Thursday, August 16, 2012

Evolution of security risk in centralized computing



Evolution of security risk in centralized computing.
As in the 80’s we do see a lot of distributed computing, the only computer that does exist was mainframe which have been heavily use for large batch processing jobs as well as complex computing.
Security during that time was not really a concern as the dumb terminal doesn’t have a lot of option but that doesn’t mean we are living in the world of computing utopia.
As in the 20th century, technology change from distributed computing to centralized computing such as Active Directory from Microsoft. There is more integration of application and services with Microsoft Active Directory for authentication and authorization but however convenience over security could expose the system to a risk that might impact the business operation.

Storage Spaces Performance

Introduction
Have you ever thought of the storage performance on a lab with a 2 1TB of USB 3.0 storage would look like?. Would you expect this to be a lower performance or even faster?.

In my previous blog on Storage spaces introduction I have explained in term of what it is all about and also the reasoning behind it. If you would like to reread the articles, you may read it from here.

On top of that, I also do explain with step by step on how to configured the storage spaces with a simple lab setup. If you would have interest to know more , you can find the detail in here

Windows Server 2012 on Hyper-V 2.0 hotfix

Introduction
You might want to patch your windows server 2008 R2 SP1 with the above hotfix if you are running Windows Server 2012 or Windows 8 as part of your VM. The experience you will get would be the VM stop responding. Please download from here if you encounter the similar issues.
Summary
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Monday, August 6, 2012

Status: 0x800f0906

Introduction
.Net have become a common prerequisite in all of the windows application. There are more and more apps are develop in this platform. However there are new version released which is version 4 in the Windows Server 2012 as part of features.

In the older days, when we think of installing .NET framework, the first thing that we would ever do is googling in the internet and search for the source files. However for now, the package come with the OS it self. You have an option to enable the package.

In Windows Server 2012, there are 2 version of .NET framework that is been offer. However, you only can turn on the version 4 from the server manager tools and you can't use the same technique for the version 3.5.

The reason behind this is because it is not contain in the sxs folder. In the internet forum, there are someone mentioning you can do this via the internet, but however I haven't test this out.

The 2nd option would be using the media it self by using few command.
  1. Add-WindowsFeature –name NET-Framework-Core –source :\sources\sxs 
  2. Dism.exe /online /enable-feature /featurename:NetFX3 /All /Source::\sources\sxs /LimitAccess  
You need to know the above as for some feature that you are enabled or you are installing some software such as MS SQL 2012, you would need to have this turn on before you can install the software.
 
Summary
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