How does rclone work on two remotes?

Help and Support
1

After the first sync between two remotes (e.g. S3 -> OVH), does rclone have to download all the files again to check for changes?

2

No. It will check the names and modification times. You’ll get a quicker check if you use the --checksum flag in this case as S3 and Swift both use md5 checksums.

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