A Tableau Server multi-node environment with External File Store enabled, fails to complete the 'tsm maintenance snapshot-backup prepare' command when copying the repository backup to the network share location.
You may see the following error presented with the job failing at 86% "Error copying repository backup to the network share" and the following output from the CMD:
This job failed due to unexpected error: 'TTransportException'
The following error will be presented in the Tabadmincontroller log:
"ERROR com.tableausoftware.tabadmin.webapp.asyncjobs.JobStepRunner - Running step CopyRepositoryBackup failed
org.apache.thrift.TApplicationException: Internal error processing copyBackupToNetworkShare"