Understanding offsite synchronization with resumable streaming
This article describes resumable stream offsite synchronization. Previous synchronization methods involved building a compressed file of the changes, then sending it offsite to the paired node.
Environment
- Datto SIRIS
- Datto ALTO
- Datto NAS
Topic
All Datto appliances use resumable streaming to stream your data directly to the offsite server in the native ZFS format. Resumable streaming allows for faster uploads compared to previous methods, with no need to build files or start over in the event of an interruption. The Datto device streams the data to our cloud server and, in the event of an interruption, picks up right where it left off when the connection is restored. The offsite server compresses the snapshot as it receives it, and adds it to a queue for integration into the offsite data chain.
NOTE Backups that take more than 24 hours to complete will not be automatically marked for offsite synchronization. However, they can be manually scheduled for synchronization.
Replication status
To view the status of your offsite stream, navigate to the home page of the Device Web GUI. Scroll down to the Replication Status section of the page.
While streaming data, a cloud icon will appear next to the server's name. The replication status will say "Syncing backup...".
Once the stream is complete, the date and time of the last successful synchronization will be displayed.
If there are issues with the offsite synchronization, or you have questions about offsite transfer, contact Datto Technical Support.
