If you cannot find what you need here, please take a look at Synology's online resources below.
Whether you know exactly what you are looking for, or just want to browse for what you need, DSM Help provides detailed explanations for the following topics and resources.
Launch DSM services and the packages installed on your DiskStation.
Modify your account settings, such as password, description, or 2-step verification.
View and modify various DSM settings related to files sharing, system, network services, and many more.
Organize, upload, or download folders and files stored on your DiskStation.
Create storage spaces with different levels of data protection, view hard disk status, and map iSCSI targets and LUNs.
Back up and restore data, iSCSI LUNs, or the system configurations of your DiskStation.
Install, update, and manage Synology or third-party applications.
Make your DiskStation accessible over the Internet with a simple setup wizard.
Monitor CPU and memory usage, network flow and volume usage.
View the overall status of your DiskStation and other connected devices.