Multiple hard disks can be used for queuing jobs before processing. This feature is important when a high volume of jobs are being sent to the server and multiple writing drives are handling multiple jobs at the same time.

Disk unit

Hard disk used to cache all incoming jobs before all job data has been transferred to the host system.

Disk array

Multiple hard disks can be added to balance the load of data transferred between local hard disks and writing drives.

Please visit the Multi-tasking to Multiple Drives section of the Advanced Concepts chapter for additional information on the requirements for multi-task writing.