The Cloud Manager Web Console sends a “preflight” check request prior to beginning the upload of each file. This allows the Application Server to examine all the required conditions before attempting to upload the file. Should anything fail, you will see a failure message before the file is sent. This check cannot guarantee all of the desired conditions for the upload:
Servers might run out of space during the file upload, even though conditions were favorable when it began.
The Orchestration Server cannot examine many of the file upload error conditions during the preflight check. It reports such errors only during the final mounting stage.