Use a hard disk to buffer print jobs, collate large jobs or to store forms, fonts or macros.These functions are enabled with a disk installed: Job Building/ Custom Copy Scan Preview Operator Panel Lock Fax storage on HD (automatic) Print and Hold jobs over a POR Job Parking / Job Hold Fax Job Waiting Sample Copy Storage used by DLEs Job buffering (spooling)/collation on disk Copy spooling Email spooling Font and macro storage Booklet copy Disk wiping (through Security Menu Settings) - includes Manual and scheduled wiping Print Directory (through Reports Menu Settings) Job Accounting MultiSend.