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Showing posts from February, 2021

Reclaim Disk Space from Shadow Copies

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 Hi,  I have found an strange issue that occurs sometimes. Seems that if Backup software fails, or leaves a task incompleted, the shadow copy is not deleted. This causes the disk space to be retained. Majority of backup solutions today uses VSS in Windows for take some kind of "snapshot" of the disk. That is a good thing, but maybe you will experience this situation. In my case, sometiemes this happens when using an Hyper-V Cluster and a bacukp job is interrupted. The first sign is that suddenly you are low in disk space. And seems to be consuming more and more over time... If you have Cluster Shadow Volumes (CSV) and you count the content, you will find that the amount of disk space does not match. For instance, here I have about 2.8TB of data, and my disk has a total of 3.8. So I should have about 1TB of free space.  However, I only have 370GB of free space. This is a sign of something wrong. In my case, executing this commands should help. Fist, you should go to the server