My .DAT files are growing on my server

I have a windows server 2012 and it seems like my .DAT files are continually growing out of control. What can I do to stop this and what are they actually? Are they safe to delete?
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Dan McFaddenSystems EngineerCommented:
Where are these ".dat" files located on your server?

What functionality/services does this server provide?

cmdolcetAuthor Commented:
The server is our main File Server and the Data is located in the "ServerFolders >> Client Computer Backups"
Dan McFaddenSystems EngineerCommented:
Are you using Backup software that stores backup content in .dat files?  Is there a way to identify from which computer the backups came from?  Who manages the desktops in your company?

Since this is a file server it is quite normal for the files stored on a file server to increase in size or for the number of files to increase.

cmdolcetAuthor Commented:
Im not sure how to check this? I noticed it because our server was loosing space... So not too sure what this directory is all about!
Dan McFaddenSystems EngineerCommented:
From the name of it, someone in the company is saving backups of client computers.  If you want to find out who, you could always reset the NTFS permissions so that only you can access the directory.  Then the next time someone tries to save a file there, they will get an access denied and probably call someone about it.

You could also monitor who/what is connecting to the share by looking at Computer Manager.

1. on the file server, open the Admin Tool, computer manager
2. under System Tools, click on Sessions to see who is connecting to the server
3. under System Tools, click on Open Files to see who has what file open

Watch for any connection of interest.  You will at least get a either a computer name, user name or both.


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Windows Server 2012

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