DSM provides a number of features for managing files, sharing files, and running applications on a NAS device. It is a Linux-based operating system that is designed for use with NAS devices. PAT files are packages that contain the files required to install or update the DSM software on a Synology NAS device.ĭSM is the operating system used by Synology NAS devices. PAT files may be the file extension of DiskStation Manager (DSM) installation files.
