Cluster Settings for Extended Transcoding Sessions
If you anticipate a transcoding session that will last up to seven days or longer, you must
make an adjustment in the Advanced section of the Apple Qmaster preferences pane.
By default, temporary process files may remain on a cluster’s scratch location for seven
days before they are automatically deleted. You can increase this value (the number of
days) in the Apple Qmaster Sharing window of Compressor.