Recently, while testing other VMS (Video Management System) solutions with QNAP NAS as external storage compatibility, I discovered that when the VMS tries to delete old files for loop recording, the space is not released, resulting in recording stoppage.
Upon investigation, it was found that this is because the “Recycle Bin” feature for shared folders is enabled by default, causing files deleted by the VMS via Samba not to be truly deleted but moved to the recycle bin instead, so the space is not actually freed up.
If you want to use QNAP as the recording storage for other VMS, it is better to create a dedicated shared folder for storing these recording files and disable the “Recycle Bin” and “Snapshot” options in the control panel. These features do not provide practical benefits in the context of storing recording files.
Additionally, if you use QNAP’s own VMS systems, such as QVR Pro or QVR Elite, you will not encounter this issue because their retention management methods are different from those mentioned above.