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Why Windows Server 2012 R2: Reduce Storage Cost for Your VDI Deployments

New Capabilities in Data De-Duplication

imageWith storage needs in your organizations growing exponentially over the last few years and into the future there are plenty of things you may done in the past to help keep the cost down.  Chances are you bought some kind of fancy SAN, that had all the bells and whistles to help storage work efficiently.  I am willing to bet one of the features your SAN has is data de-duplication.

Windows Server 2012
With Windows Server 2012 we introduced built-in data de-duplication on a per-volume basis.  You can save a tremendous amount in storage costs with this powerful addition.   Thisde-duplication feature uses data broken into chunks and eliminates duplicates while adding pointers and using advanced mechanisms to provide for and prevent potential data loss. The de-duplication feature also uses a data aging system to ensure that only data that is resident on the volume for greater than 4 days (4 is the default and is adjustable based on your own situation) is de-duplicated to prevent the de-duplication of data that is constantly changing.  If you want to take a look at a fantastic example take a look at post from a previous series which shows a de-deplicaiton from 240GB to 7GB:

31 Days of Our Favorite Things- From 240GB to 7 GB De-duplication with Veeam and Windows Server 2012

Windows Server 2012 R2
In Windows Server 2012 R2 we improved this feature even more.  In Windows Server 2012 R2, we now support live data de-duplication on VHD’s for VDI.  This means that data de-duplication can now be performed on open VHD/VHDX files on remote VDI storage with CSV volume support. Remote VHD/VHDX storage de-duplication allows for increased VDI storage density significantly reducing VDI storage costs, and enabling faster read/write of optimized files and advanced caching of duplicated data.

What’s the big deal?
We will start with the easy one, you will now save space and the rates for VDI deployments can range as high as 95% savings. This allows for deployments of SSD based volumes for VDI, leveraging all the improved IO characteristics while mitigating their low capacity.  Additionally, due to the fact that Data De-duplication consolidates files, more efficient caching mechanisms are possible. This results in improving the IO characteristics of the storage subsystem for some types of operations. So not only does de-duplication save money, it can make things go faster.

Configuring De-Duplication for VHDs in VDI
Of course the biggest part of this configuration is going to be getting VDI up to speed in your datacenter.  Then after that it is just a matter of configuring data on the volume that houses your VDI solution.  You can find the full details here:  Deploying Data De-duplication for VDI storage in Windows Server 2012 R2

It involves the same de-duplication cmdlets that were used in Windows Server 2012, with one small change as illustrated in the following example:

Enable-DedupVolume C:\ClusterStorage\Volume1 –UsageType HyperV

Then it is the same cmdlets you may have used in the past; Start-DedupJob, Get-DedupVolume, Get-DedupStatus, Get-DedupJob….etc

If you want to give Windows Server 2012 a try take a look here: http://aka.ms/getwindowsserver2012R2

If you want to learn more about the background of the data de-duplication functionality take a look here: Introduction to Data Deduplication in Windows Server 2012.

For the full list in the series:  Windows Server 2012 R2 Launch Blog Series Index #WhyWin2012R2

More Stories By Matt Hester

Matt Hester is a Senior Information Technology Professional Evangelist for Microsoft. Matt has been involved in the IT Pro community for over 20 years. Matt is a skilled and experienced evangelist presenting to audiences nationally and internationally. Prior to joining Microsoft Matt was a highly successful Microsoft Certified Trainer for over 8 years. After joining Microsoft, Matt has continued to be heavily involved in IT Pro community as an IT Pro Evangelist. In his role at Microsoft Matt has presented to audiences in excess of 5000 and as small as 10. Matt has written 4 articles for TechNet magazine. In addition Matt has published 3 books:

You can contact Matt off his blog at http://aka.ms/matthester

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