Do not write video data to your C: Drive

Best Practices: How to tell if you are writing to your C: drive


Writing to your C: drive is against our best practices. We are finding that many customers have this misconfiguration in their infrastructure. This can result in loss of video as the C: drive is typically a smaller storage capacity which doesn’t accommodate large video files.  The C: drive is also where the operating system and your Video Management Software is installed. In some applications, writing to the C: drive will cause the VMS to start overwriting itself. The symptoms this can be unexpected reboots, total loss of video, and possible VMS corruption.


  1. You want to check is you Streams Configuration. Go to Server Overview > Streams. The Streams Configuration page has columns with headers ‘Path’ and ‘Archive Path”. If either of these columns contain ‘C:’, then you are either recording or archiving directly to your C: drive.
  2. You can also go check your retention data to see if any activity is occurring on your C:/ drive. To see this data, go to your Server Overview, and click on retention in the upper right hand menu. This will bring up the retention data for each of your volumes for that recorder.

Right away, you should be able to tell if you are recording to your C: drive. If you have more green bars on your C: rather than on other drive letters, then you have a problem.

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