Adsense Code

Thursday, 19 February 2015

How to remove deduplication on a Windows 2012R2 server - hold onto your hats!

We ended up having to remove deduplication off our Windows 2012R2 server on a few volumes as Netbackup could not 'in a few circumstances' be able to restore data.  This was despite us checking the compatibility and, of course, completing some tests.

Fortunately, we had replicated the server over to our DR site using VMware's SRM product, so we were able to test this next step before we did it, gulp, on the live environment.

First things first - DO NOT UNINSTALL THE DEDUPLICATION SERVICE ON THE WINDOWS SERVER and then read through all of this before you do the work!

Then start a powershell and type in

start-dedupjob -volume VolumeLetter -Type Unoptimization

Note the spelling of unoptimisation - I want to type it with an S - I'm never sure which are the correct way round in this trans-Atlantic world that we live in today.

The unoptimization will start its work.  It will take a long time.  It will increase disk IO.  And despite you checking what your data size is and your unoptimised size - you will need to increase the disk size allocated to your Windows server.  The unoptimisation creates a large data footprint on the same volume but does tidy up after itself.  You can shrink the volumes afterwards.  We didn't change the disk size on our practice server and it just worked over many hours.  However, with the live environment, which we monitored during the working day, we could the remaining disk space just being eaten up and used up.

You can check how it is all going by typing in


It will stay at 0% for ages - hours even.  Then it will just go 50%, 60% and the remaining percentages over an hour or so.

This does work, we haven't lost data and we only did it because we couldn't guarantee the data protection for the backups - but that made it scary to do on the live environment (despite checking it in test which was a duplication of live) as if it all went wrong, we didn't have backup to go back to.

But it worked!

Hope it helps others.


  1. The question here is asking about the way to delete the duplicate of the windows in the 2012 with the server of the windows in the year of circumstances. The first thing here is to do is up of the volume that can create the of modesty with the high level of the issuance.

  2. We can deliver you with a cheap assignment service that may care you. Our writers are accessible 24/7 with the assignment skills you have to pick up a fabulous grade. It may be a good investment for your education.

  3. This process is an easy, but new users can face some issues because they have not enough money about it. They can get help from seniors or watch YouTube videos and solve this problem. Dissertation writing services.

  4. this problem worries many people. But its solution is easy to find, just as essay writing problems can be easily solved. You need to use these college essay writing service . Wr1ter company guarantees fast and professional essay writing within the time agreed with the customer.

  5. ManoMano voucher code are possibly the best way to save money shopping while staying at home. Their Home Improvement products are one of the finest. So, while shopping remember to check on before checkout, you will find great ManoMano discount code that will help you save your money. We have a great list of ManoMano voucher code on our merchant page, So If one of our ManoMano code is not eligible on your order surely the other one will or you can also avail our pre-activated manomano voucher code deals & offers to save much more without redeeming a code.

  6. This comment has been removed by the author.

  7. This comment has been removed by the author.

  8. There are almost 10 different signs that are used by the horrible sports parents shared in year 2016 with the graphs. Camous cause is powered by the flip give stories and the making here is for the iot in maintenance that is used for the coaching at the side of the corner with the relative stuff.

  9. Recommendations the references to get fields on the access of the parties this was good to have attraction server fields. Infrastructure with the data and community to have Phoenix iv therapy with the production of details on the restricted part was good with the server part.

  10. Duplicate content remains on the fraud website. and to avoid this you can use best nordvpn deals. You won't have any problem doing it.