There currently is an issue when uploading files around 200 GB.
The error originates from the default block size in the Azure SDK. There is a 50,000 block limit, and the default block size is 4 MB. This results in a file size limit of 195 GB.
We are working to address this issue in version 3.3.0 of SFTP Gateway by exposing a block size configuration option.
The Error Message
When uploading a 200 GB or larger file you may see this response in
2022-03-24 10:48:00 - /home/robtest/home/robtest/uploads/large-file upload result is: ERROR: Retry policy did not allow for a retry: HTTP status code=409, Exception=The uncommitted block count cannot exceed the maximum limit of 100,000 blocks. ErrorCode: BlockCountExceedsLimit The uncommitted block count cannot exceed the maximum limit of 100,000 blocks.