How large is the hard disk drive in the iPF825, and what are its benefits?

The printer is equipped with a 160GB hard disk drive (2.5 inch, 5400 rpm, S-ATA interface). Each print job received from the host computer is saved to the hard disk so the printer can reprint jobs without retransmission from the host. This also allows unattended nighttime printing operations and the ability to resume printing after errors such as paper out without retransmitting from the host computer.