SQL Server cluster related T-SQL queries which helps in finding SQL Server Cluster Nodes and their shared drives.

1. Find name of the Node on which SQL Server Instance is Currently...

As the job is completed successfully today, i would recommend 'NOT' to go with this hotfix.

There might be other factors causing this intermittent issue.

http://sqlserverpedia.com/blog/sql-server-bloggers/backupvirtualdevicefilerequestdurablemedia-flush-failure-on-backup-device/

Check with your backup team...