Possible Mapped Drive Connection Timeout Hello,
In this case it might be a simple network error, maybe connection dropped or got unstable. Does it happen constantly with any operation or only on the DB backup ? We also know that SQL is not writing the files in an ordinary way, sometimes it may write to the end of the file, sometimes to the beginning so it might be related to it. One of the possible workarounds might be disabling the caching function in the drive, you can do this via Advanced Options of the Mapped Drives. Thank you and please keep us posted regarding the results. We can also continue investigation in the ticket to avoid public exposure of your data.