Using Alist to Sync TrueNAS to OneDrive Background I have an E5 subscription and was originally using a solution involving running the driveone/onedrive:edge Docker container to achieve synchronization. However, this solution had drawbacks: firstly, it lacked a GUI/WebUI, and secondly, each sync operation would consume 25%-50% of CPU resources. Considering that TrueNAS's built-in sync solution can sync to WebDAV, I thought of using Alist to mount OneDrive and convert it into WebDAV for TrueNAS to mount. Process Installing Alist Create a persistent storage folder for Alist and write a Docker Compose file according to the official Alist documentation: services: alist: environment: - PUID=3000 - PGID=950 - UMASK=022 image: xhofe/alist:latest ports: - '8088:5244' restart: always volumes: - /mnt/systemdata/DockerData/alist/etc:/opt/alist/data - /mnt/data/Storage:/mnt/data Here, I exposed the Alist port on 8088. Mapping /mnt/data/Storage allows Alist to manage local storage; mapping /mnt/systemdata/DockerData/alist/etc serves as the folder for storing Alist data. Configuring OneDrive on Alist is not discussed in this article; please refer to the official Alist documentation. Here, I mounted my OneDrive at /OneDrive. After setup, go to the Alist admin panel -> Users, edit your user or create a new user, and check the Webdav Read and Webdav Manage permissions to enable WebDAV access for this user. Configuring TrueNAS Sync Go to TrueNAS Admin-Credentials-Backup Credentials, and add a Cloud Credential with the following parameters: Provider: WebDAV Name: Custom URL: Alist address +/dav, e.g., I used http://127.0.0.1:8088/dav WebDAV Service: OTHER Username和Password: Alist account credentials Verify the credential and save it if successful. Next, go to TrueNAS Admin -> Data Protection, and add a Cloud Sync Task. Under Provider, select the WebDAV credential for Alist created earlier. The parameters are explained in detail below: Direction: Choose PULL (cloud to local) or PUSH (local to cloud) Transfer Mode: COPY: Copy files. Files deleted from the source folder later will not be deleted from the target. MOVE: Copy files and then delete them from the source folder after transfer. SYNC: Keep the source and target folders synchronized. Files deleted from the source will also be deleted from the target. Directory/Files: The local file or folder to sync. Folder: The target folder in the cloud storage. Description: Notes. Schedule: Set a schedule using Cron syntax. You can use predefined intervals or write your own. For example, I selected PUSH, SYNC, syncing from /mnt/data/Storage to /OneDrive/TrueNAS, scheduled to run daily at 00:00. After editing, save the task. It will automatically upload local files to OneDrive at the scheduled time. Old Solution Project Address: https://github.com/abraunegg/onedrive Reference Articles: https://alist.nn.ci/zh/guide/install/docker.html https://alist.nn.ci/zh/guide/drivers/onedrive.html